32mg per image in Raw on XE-2?

Started 7 months ago | Questions thread
Perry Kivolowitz
Regular MemberPosts: 268Gear list
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Re: Back of the envelope
In reply to nixda, 7 months ago

nixda wrote:

Perry Kivolowitz wrote:

I was surprised as well as it is getting close to the D800 raw files when shot with full compression at 12 bit.

Fuji doesn't appear to use any compression for its raw files.

Plus no option to downscale to 12-bit files on output.

4896*3246 * 3 channels * 2 bytes per channel = 95,883,264 > 32MB

The raw data image size is 5120*3288*14 bits = 28.1MB

There aren't 3 channels per pixel, just one. Add to that the JPEG thumbnail, the metadata and some other stuff, and you'll end up with the ~32MB file size.

Ah (as in Doh!). I should have known that.

But, it is unlikely that 14 bits are written as 14. Rather as 16, making the file requirements marginally larger.

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