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Welcome to Michael's blog. Michael Andrew, (aka Michael The Maven) is a freelance producer, photography instructor, tech innovator, and when needed, disaster aid specialist. Disclaimer: Michael is a participant in Bhphoto & Amazon affiliate programs that provides an advertising commission if you purchase through links on this website.


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08.07.13         photography  

Canon 6D 20MP vs Nikon D600 24MP - What is the effect of Sensor Size on File Size?


I usually shoot Canon, but this last month I've been shooting exclusively with the D600 both recreationally and professionally. For the most part, I have been loving it, but I recently noticed something especially peculiar….

The Canon 6D has a 20 MP sensor
The Nikon D600 has a 24 MP sensor

One would expect that file sizes of the D600 would be about 20-25% larger than the 6Ds based on sensor size… at least ball park right?

Wrong...

Truth of the matter is, the Canon 6D's JPEG's are in the 3-5 MB size range. The Nikon D600's seem to be falling in the 8-12 MP range, over 140% larger in file size. The RAW files seemed closer, in the 20MB range for the Canon, with closer to the 30 MB range for the D600, still 50% larger is significant.

I am curious if it also has something to do with the fact that the D600 has better Dynamic Range (14.2 vs 12.1 EV) and Color Gamut (25.1vs 23.8) than the 6D, which results in a wider range of colors and shades, it would explain the much larger file size as this would have to be accounted for on a pixel level after compression for JPEG files.. 20-30% larger size would be understandable….100-140% larger? There are going to be workflow issues because it is multiplied at every step, from downloading off the card, to opening, editing exporting, saving and sharing, it really adds up.

Ill need to do some more tests when I get back to Maui, but this is a big deal, especially if you are a wedding photographer who takes 4,000-5000 images per wedding.

If you own either of these cameras, you might want to check out:

Canon 6D Crash Course Training Tutorial Download Video
Nikon D600 Crash Course Training Tutorial Download Video

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