Does the A7(r) kill HDR picture taking ?

Started Jan 15, 2014 | Discussions thread
ProfHankD Veteran Member • Posts: 5,642
Dynamic range

The A7/A7R have about 1 stop greater dynamic range than the NEX-7, which is already a couple of stops better than things like a Canon 70D. The freaky thing is that this means the A7/A7R have slightly more dynamic range than normal instantaneous human eyesight!  This means that the dynamic range you see at a glance can pretty much be captured in one shot. However, people viewing your photo get time to move their eye about, and if you do that when taking a photo, you'll find there is a lot more than 14 Ev of dynamic range in some scenes out there.  If you want all of it captured, not just what you see at a glance, multi-shot HDR is still needed.

As I observed in my article at DPReview comparing A7 vs. NEX-7+LT , you can easily lose that extra stop in correcting dark corners on FF, which would make multi-shot HDR just as necessary as it was on a NEX-7. However, the corners are usually fine a few stops from wide open.

Ok, so you get your HDR captured maybe in one shot. That still leaves the tonal mapping problem for output devices that have nowhere near 14 Ev dynamic range. Arguambly, HDR is as much about this tonal remapping as it is about getting the dynamic range captured, and so you may still need HDR processing software to get the most out of even single-shot captures from cameras like the A7/A7R. Actually, dynamic range of things like printed photos is tiny, so even single-shots from cheap compact cameras can benefit from HDR tone-mapping algorithms....

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