Do raw images of the same camera have the same size?












2















I have a project in which I'm trying to balance load between several computing devices. These devices are similar and are supposed to have a camera segment. Device captures an image and then process the image.



For simplicity I want to consider the load as the number of the images waiting on the process queue, but this requires the images to be the same size and have the same specifications.



So my question is that do the images of the same camera have the same size? I know that compressing the images and converting them to .jpeg format, will probably change their size, but how about raw images of the same camera? Do raw images have the same size?










share|improve this question









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    2















    I have a project in which I'm trying to balance load between several computing devices. These devices are similar and are supposed to have a camera segment. Device captures an image and then process the image.



    For simplicity I want to consider the load as the number of the images waiting on the process queue, but this requires the images to be the same size and have the same specifications.



    So my question is that do the images of the same camera have the same size? I know that compressing the images and converting them to .jpeg format, will probably change their size, but how about raw images of the same camera? Do raw images have the same size?










    share|improve this question









    New contributor




    Pablo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























      2












      2








      2








      I have a project in which I'm trying to balance load between several computing devices. These devices are similar and are supposed to have a camera segment. Device captures an image and then process the image.



      For simplicity I want to consider the load as the number of the images waiting on the process queue, but this requires the images to be the same size and have the same specifications.



      So my question is that do the images of the same camera have the same size? I know that compressing the images and converting them to .jpeg format, will probably change their size, but how about raw images of the same camera? Do raw images have the same size?










      share|improve this question









      New contributor




      Pablo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      I have a project in which I'm trying to balance load between several computing devices. These devices are similar and are supposed to have a camera segment. Device captures an image and then process the image.



      For simplicity I want to consider the load as the number of the images waiting on the process queue, but this requires the images to be the same size and have the same specifications.



      So my question is that do the images of the same camera have the same size? I know that compressing the images and converting them to .jpeg format, will probably change their size, but how about raw images of the same camera? Do raw images have the same size?







      raw






      share|improve this question









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      Pablo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question









      New contributor




      Pablo is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question








      edited 10 hours ago







      Pablo













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      asked 12 hours ago









      PabloPablo

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      New contributor





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          3 Answers
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          active

          oldest

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          5














          Most digital cameras use lossless compression with raw files. That means the size of raw files from the same camera is somewhat content dependent.



          The more detail and different colors a scene contains, the larger the file will be. The more homogeneity a scene contains, the smaller the file will be. The degree of the differences will also be governed by differences in things such as noise in dark areas (noise usually adds to a file size by creating a greater number of unique brightness levels).






          share|improve this answer































            4














            A picture being worth a thousand spreadsheet cells, here is an histogram of the size of the RAW files from my camera for 2018 (EOS 70D, 20Mpx). Sizes are in 1000's of K (not really MB).enter image description here



            For the mathematically inclined:



            Average:    24538
            Median: 24300
            Std dev.: 2119





            share|improve this answer


























            • Perhaps you could post the mean and SD? It would be informative

              – Azor Ahai
              8 hours ago











            • Added the numbers

              – xenoid
              7 hours ago






            • 2





              Thanks a lot. Would you please clarify about what the x-axis and y-axis show? I'm not sure about what these values exactly are.

              – Pablo
              7 hours ago











            • X is size ('24' is for pics between 24000K and 25000K) and Y is the number of pics in the bucket.

              – xenoid
              7 hours ago



















            0














            This may be camera-dependent, but for my Canon EOS 7D Mark II, different raw images are definitely not the same size:



            # ls -l *.cr2
            -rwx------ 1 tew tew 23868042 Jan 21 10:59 20190121105920-6996.cr2
            -rwx------ 1 tew tew 24408037 Jan 21 11:07 20190121110757-7002.cr2
            -rwx------ 1 tew tew 25928707 Jan 21 11:08 20190121110823-7003.cr2
            -rwx------ 1 tew tew 23777211 Jan 21 11:08 20190121110852-7004.cr2
            -rwx------ 1 tew tew 25369539 Jan 21 11:09 20190121110922-7005.cr2
            -rwx------ 1 tew tew 22675822 Jan 21 11:11 20190121111113-7006.cr2
            -rwx------ 1 tew tew 23377077 Jan 21 11:11 20190121111119-7007.cr2


            They are all pretty close in size, but there's definitely some variance, which is primarily due to compression of the raw sensor data as well as the metadata and embedded JPG preview image.






            share|improve this answer


























            • Thanks. Since I don't have enough knowledge in photography, I wanted to know if this difference in size is so high that I can't consider load as the number of images? Does "23868042" mean 23.8 Megabyte?

              – Pablo
              11 hours ago






            • 1





              Correct - the 7D II has a 20.2 megapixel sensor, and the resulting raw images are generally between 19 and 36 megabytes, given my current collection of photos...

              – twalberg
              11 hours ago













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            3 Answers
            3






            active

            oldest

            votes








            3 Answers
            3






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            5














            Most digital cameras use lossless compression with raw files. That means the size of raw files from the same camera is somewhat content dependent.



            The more detail and different colors a scene contains, the larger the file will be. The more homogeneity a scene contains, the smaller the file will be. The degree of the differences will also be governed by differences in things such as noise in dark areas (noise usually adds to a file size by creating a greater number of unique brightness levels).






            share|improve this answer




























              5














              Most digital cameras use lossless compression with raw files. That means the size of raw files from the same camera is somewhat content dependent.



              The more detail and different colors a scene contains, the larger the file will be. The more homogeneity a scene contains, the smaller the file will be. The degree of the differences will also be governed by differences in things such as noise in dark areas (noise usually adds to a file size by creating a greater number of unique brightness levels).






              share|improve this answer


























                5












                5








                5







                Most digital cameras use lossless compression with raw files. That means the size of raw files from the same camera is somewhat content dependent.



                The more detail and different colors a scene contains, the larger the file will be. The more homogeneity a scene contains, the smaller the file will be. The degree of the differences will also be governed by differences in things such as noise in dark areas (noise usually adds to a file size by creating a greater number of unique brightness levels).






                share|improve this answer













                Most digital cameras use lossless compression with raw files. That means the size of raw files from the same camera is somewhat content dependent.



                The more detail and different colors a scene contains, the larger the file will be. The more homogeneity a scene contains, the smaller the file will be. The degree of the differences will also be governed by differences in things such as noise in dark areas (noise usually adds to a file size by creating a greater number of unique brightness levels).







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 11 hours ago









                Michael CMichael C

                130k7147366




                130k7147366

























                    4














                    A picture being worth a thousand spreadsheet cells, here is an histogram of the size of the RAW files from my camera for 2018 (EOS 70D, 20Mpx). Sizes are in 1000's of K (not really MB).enter image description here



                    For the mathematically inclined:



                    Average:    24538
                    Median: 24300
                    Std dev.: 2119





                    share|improve this answer


























                    • Perhaps you could post the mean and SD? It would be informative

                      – Azor Ahai
                      8 hours ago











                    • Added the numbers

                      – xenoid
                      7 hours ago






                    • 2





                      Thanks a lot. Would you please clarify about what the x-axis and y-axis show? I'm not sure about what these values exactly are.

                      – Pablo
                      7 hours ago











                    • X is size ('24' is for pics between 24000K and 25000K) and Y is the number of pics in the bucket.

                      – xenoid
                      7 hours ago
















                    4














                    A picture being worth a thousand spreadsheet cells, here is an histogram of the size of the RAW files from my camera for 2018 (EOS 70D, 20Mpx). Sizes are in 1000's of K (not really MB).enter image description here



                    For the mathematically inclined:



                    Average:    24538
                    Median: 24300
                    Std dev.: 2119





                    share|improve this answer


























                    • Perhaps you could post the mean and SD? It would be informative

                      – Azor Ahai
                      8 hours ago











                    • Added the numbers

                      – xenoid
                      7 hours ago






                    • 2





                      Thanks a lot. Would you please clarify about what the x-axis and y-axis show? I'm not sure about what these values exactly are.

                      – Pablo
                      7 hours ago











                    • X is size ('24' is for pics between 24000K and 25000K) and Y is the number of pics in the bucket.

                      – xenoid
                      7 hours ago














                    4












                    4








                    4







                    A picture being worth a thousand spreadsheet cells, here is an histogram of the size of the RAW files from my camera for 2018 (EOS 70D, 20Mpx). Sizes are in 1000's of K (not really MB).enter image description here



                    For the mathematically inclined:



                    Average:    24538
                    Median: 24300
                    Std dev.: 2119





                    share|improve this answer















                    A picture being worth a thousand spreadsheet cells, here is an histogram of the size of the RAW files from my camera for 2018 (EOS 70D, 20Mpx). Sizes are in 1000's of K (not really MB).enter image description here



                    For the mathematically inclined:



                    Average:    24538
                    Median: 24300
                    Std dev.: 2119






                    share|improve this answer














                    share|improve this answer



                    share|improve this answer








                    edited 7 hours ago

























                    answered 8 hours ago









                    xenoidxenoid

                    2,911316




                    2,911316













                    • Perhaps you could post the mean and SD? It would be informative

                      – Azor Ahai
                      8 hours ago











                    • Added the numbers

                      – xenoid
                      7 hours ago






                    • 2





                      Thanks a lot. Would you please clarify about what the x-axis and y-axis show? I'm not sure about what these values exactly are.

                      – Pablo
                      7 hours ago











                    • X is size ('24' is for pics between 24000K and 25000K) and Y is the number of pics in the bucket.

                      – xenoid
                      7 hours ago



















                    • Perhaps you could post the mean and SD? It would be informative

                      – Azor Ahai
                      8 hours ago











                    • Added the numbers

                      – xenoid
                      7 hours ago






                    • 2





                      Thanks a lot. Would you please clarify about what the x-axis and y-axis show? I'm not sure about what these values exactly are.

                      – Pablo
                      7 hours ago











                    • X is size ('24' is for pics between 24000K and 25000K) and Y is the number of pics in the bucket.

                      – xenoid
                      7 hours ago

















                    Perhaps you could post the mean and SD? It would be informative

                    – Azor Ahai
                    8 hours ago





                    Perhaps you could post the mean and SD? It would be informative

                    – Azor Ahai
                    8 hours ago













                    Added the numbers

                    – xenoid
                    7 hours ago





                    Added the numbers

                    – xenoid
                    7 hours ago




                    2




                    2





                    Thanks a lot. Would you please clarify about what the x-axis and y-axis show? I'm not sure about what these values exactly are.

                    – Pablo
                    7 hours ago





                    Thanks a lot. Would you please clarify about what the x-axis and y-axis show? I'm not sure about what these values exactly are.

                    – Pablo
                    7 hours ago













                    X is size ('24' is for pics between 24000K and 25000K) and Y is the number of pics in the bucket.

                    – xenoid
                    7 hours ago





                    X is size ('24' is for pics between 24000K and 25000K) and Y is the number of pics in the bucket.

                    – xenoid
                    7 hours ago











                    0














                    This may be camera-dependent, but for my Canon EOS 7D Mark II, different raw images are definitely not the same size:



                    # ls -l *.cr2
                    -rwx------ 1 tew tew 23868042 Jan 21 10:59 20190121105920-6996.cr2
                    -rwx------ 1 tew tew 24408037 Jan 21 11:07 20190121110757-7002.cr2
                    -rwx------ 1 tew tew 25928707 Jan 21 11:08 20190121110823-7003.cr2
                    -rwx------ 1 tew tew 23777211 Jan 21 11:08 20190121110852-7004.cr2
                    -rwx------ 1 tew tew 25369539 Jan 21 11:09 20190121110922-7005.cr2
                    -rwx------ 1 tew tew 22675822 Jan 21 11:11 20190121111113-7006.cr2
                    -rwx------ 1 tew tew 23377077 Jan 21 11:11 20190121111119-7007.cr2


                    They are all pretty close in size, but there's definitely some variance, which is primarily due to compression of the raw sensor data as well as the metadata and embedded JPG preview image.






                    share|improve this answer


























                    • Thanks. Since I don't have enough knowledge in photography, I wanted to know if this difference in size is so high that I can't consider load as the number of images? Does "23868042" mean 23.8 Megabyte?

                      – Pablo
                      11 hours ago






                    • 1





                      Correct - the 7D II has a 20.2 megapixel sensor, and the resulting raw images are generally between 19 and 36 megabytes, given my current collection of photos...

                      – twalberg
                      11 hours ago


















                    0














                    This may be camera-dependent, but for my Canon EOS 7D Mark II, different raw images are definitely not the same size:



                    # ls -l *.cr2
                    -rwx------ 1 tew tew 23868042 Jan 21 10:59 20190121105920-6996.cr2
                    -rwx------ 1 tew tew 24408037 Jan 21 11:07 20190121110757-7002.cr2
                    -rwx------ 1 tew tew 25928707 Jan 21 11:08 20190121110823-7003.cr2
                    -rwx------ 1 tew tew 23777211 Jan 21 11:08 20190121110852-7004.cr2
                    -rwx------ 1 tew tew 25369539 Jan 21 11:09 20190121110922-7005.cr2
                    -rwx------ 1 tew tew 22675822 Jan 21 11:11 20190121111113-7006.cr2
                    -rwx------ 1 tew tew 23377077 Jan 21 11:11 20190121111119-7007.cr2


                    They are all pretty close in size, but there's definitely some variance, which is primarily due to compression of the raw sensor data as well as the metadata and embedded JPG preview image.






                    share|improve this answer


























                    • Thanks. Since I don't have enough knowledge in photography, I wanted to know if this difference in size is so high that I can't consider load as the number of images? Does "23868042" mean 23.8 Megabyte?

                      – Pablo
                      11 hours ago






                    • 1





                      Correct - the 7D II has a 20.2 megapixel sensor, and the resulting raw images are generally between 19 and 36 megabytes, given my current collection of photos...

                      – twalberg
                      11 hours ago
















                    0












                    0








                    0







                    This may be camera-dependent, but for my Canon EOS 7D Mark II, different raw images are definitely not the same size:



                    # ls -l *.cr2
                    -rwx------ 1 tew tew 23868042 Jan 21 10:59 20190121105920-6996.cr2
                    -rwx------ 1 tew tew 24408037 Jan 21 11:07 20190121110757-7002.cr2
                    -rwx------ 1 tew tew 25928707 Jan 21 11:08 20190121110823-7003.cr2
                    -rwx------ 1 tew tew 23777211 Jan 21 11:08 20190121110852-7004.cr2
                    -rwx------ 1 tew tew 25369539 Jan 21 11:09 20190121110922-7005.cr2
                    -rwx------ 1 tew tew 22675822 Jan 21 11:11 20190121111113-7006.cr2
                    -rwx------ 1 tew tew 23377077 Jan 21 11:11 20190121111119-7007.cr2


                    They are all pretty close in size, but there's definitely some variance, which is primarily due to compression of the raw sensor data as well as the metadata and embedded JPG preview image.






                    share|improve this answer















                    This may be camera-dependent, but for my Canon EOS 7D Mark II, different raw images are definitely not the same size:



                    # ls -l *.cr2
                    -rwx------ 1 tew tew 23868042 Jan 21 10:59 20190121105920-6996.cr2
                    -rwx------ 1 tew tew 24408037 Jan 21 11:07 20190121110757-7002.cr2
                    -rwx------ 1 tew tew 25928707 Jan 21 11:08 20190121110823-7003.cr2
                    -rwx------ 1 tew tew 23777211 Jan 21 11:08 20190121110852-7004.cr2
                    -rwx------ 1 tew tew 25369539 Jan 21 11:09 20190121110922-7005.cr2
                    -rwx------ 1 tew tew 22675822 Jan 21 11:11 20190121111113-7006.cr2
                    -rwx------ 1 tew tew 23377077 Jan 21 11:11 20190121111119-7007.cr2


                    They are all pretty close in size, but there's definitely some variance, which is primarily due to compression of the raw sensor data as well as the metadata and embedded JPG preview image.







                    share|improve this answer














                    share|improve this answer



                    share|improve this answer








                    edited 11 hours ago

























                    answered 12 hours ago









                    twalbergtwalberg

                    2,660613




                    2,660613













                    • Thanks. Since I don't have enough knowledge in photography, I wanted to know if this difference in size is so high that I can't consider load as the number of images? Does "23868042" mean 23.8 Megabyte?

                      – Pablo
                      11 hours ago






                    • 1





                      Correct - the 7D II has a 20.2 megapixel sensor, and the resulting raw images are generally between 19 and 36 megabytes, given my current collection of photos...

                      – twalberg
                      11 hours ago





















                    • Thanks. Since I don't have enough knowledge in photography, I wanted to know if this difference in size is so high that I can't consider load as the number of images? Does "23868042" mean 23.8 Megabyte?

                      – Pablo
                      11 hours ago






                    • 1





                      Correct - the 7D II has a 20.2 megapixel sensor, and the resulting raw images are generally between 19 and 36 megabytes, given my current collection of photos...

                      – twalberg
                      11 hours ago



















                    Thanks. Since I don't have enough knowledge in photography, I wanted to know if this difference in size is so high that I can't consider load as the number of images? Does "23868042" mean 23.8 Megabyte?

                    – Pablo
                    11 hours ago





                    Thanks. Since I don't have enough knowledge in photography, I wanted to know if this difference in size is so high that I can't consider load as the number of images? Does "23868042" mean 23.8 Megabyte?

                    – Pablo
                    11 hours ago




                    1




                    1





                    Correct - the 7D II has a 20.2 megapixel sensor, and the resulting raw images are generally between 19 and 36 megabytes, given my current collection of photos...

                    – twalberg
                    11 hours ago







                    Correct - the 7D II has a 20.2 megapixel sensor, and the resulting raw images are generally between 19 and 36 megabytes, given my current collection of photos...

                    – twalberg
                    11 hours ago












                    Pablo is a new contributor. Be nice, and check out our Code of Conduct.










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