Rumors > EOS Bodies
1Dx and CF card issue?
Kevin Weinstein:
So on my 1Ds MArk III with a 32 gig card, ISO at 800, I get 1037 images.
On my 1Dx using the same 32 gig card, ISO set at 800, I get 864.
Since my 1Ds Mark III has a higher pixel count, why is the 1Dx nearly 200 less images?
Both were reformatted when placed into the camera.
Thanks!
neuroanatomist:
Do you mean actual shots recorded, or just what the camera estimates as shots remaining?
If you mean the latter, does changing the ISO matter? It may be the camera just uses a standard average shot size to estimate, and since file size increases with increasing ISO, and the 1D X has a much broader range, it uses a larger average shot size.
If you mean the former, I'm stumped.
I haven't paid much attention to the counter, but when I was shooting a large series of AFMA shots (the only time I shoot JPG), I did notice that the counter incremented down only once every 2-3 shots, suggesting the camera was underestimating (rather severely) the number of shots remaining.
weekendshooter:
+1 for the remaining shot estimate having the potential to be wildly off. I saw the same on my 450D and currently experience this on my (gasp) D700. It reads 605 shots remaining for an empty 16GB card, where I regularly get 1200+ in real conditions.
Just changing the ISO is not the whole story. File size is a function of the entropy of the image, which in this case is most commonly created through noise. As noise is typically highly amplified in shadow OOF regions, these are the sorts of images that will take up more card space. Images with high ISO shot in good light, such as for high shutter speeds, will not increase the file size as much as images shot in low light at high ISO with large amounts of dark OOF areas.
Viggo:
Is this in raw or jpeg? Do you have ALO enabled? Or lens correction? There are a lot of things that can increase file size.
Take the same shot with both and see if the file size is in fact the same.
Kevin Weinstein:
Thanks everyone.
It is the latter situation. Yes.
I shoot RAW, also.
I always found, on the 1Ds Mark III, that the number of shots (estimated) and number I get on a card to be pretty dang close. Within 25.
Glad to know this is somewhat normal.
Navigation
[0] Message Index
[#] Next page
Go to full version