so since my camera saves my photos automatically in JPEG and since I wanted to have a RAW version of them I looked for some info about this topic and how it works on my DSLR, Canon 77D. I stumbled upon an article where I found this little scheme, which confused me a lot cause I don't get why I can store more pictures saving both files instead of just the RAW files. If someone can explain me this, I'd be very grateful!
It looks like the value for only RAW files should have been 270 instead of 170. Multiplying the average file size given by the corresponding shot count yields values between approximately 7GB and 8GB for all entries except RAW. 170 images at 29.4MB would be about 5GB, 270 images would be about 8GB. The file size given for RAW+JPEG is quite close to the sum of those for RAW and JPEG Large/Fine, so the file sizes can be assumed to be correct. So, seems like an actual error in the table.
Correction: After checking the full specification available at https://downloads.canon.com/nw/camera/products/eos/77d/specifications/canon-eos-77d-specifications-chart.pdf (table is on page 7), the numbers for RAW and RAW/JPEG have simply been swapped. The numbers according to Canon are 210 for RAW and 170 for RAW/JPEG.
- The table has a mistake, as you pointed out.
- Numbers of "shots" are just estimates to give you an idea of the relative differences in file size.
You should have been able to – Do the math yourself.
>>> 8000/37. # RAW + JPEG 216.21621621621622 >>> 8000/29.4 # RAW 272.108843537415
Don't believe everything you read.