Will the Nikon D5 be a mirrorless full-frame camera?

Started Mar 15, 2014 | Discussions thread
pkosewski Regular Member • Posts: 228
Re: Will the Nikon D5 be a mirrorless full-frame camera?

Alex Notpro wrote:

The mechanical flapping mirror seems to have reached its physical limit around 11 fps, with barely an improvement over previous generation cameras.

It's not about the speed of the mirror. DSLRs in live view mode (mirror up) have the same fps (if not lower because of the poor AF).

It's about the sensor and processing power. D4 burst mode basically gives you the same IQ you get from a single shot. Of course the sensor will get warmer over time, so the IQ will go down, but first 10 or 20 frames will be great.

If you would make D4 shot at 60fps, you might cook the sensor. Shooting at ISO100, after a moment you'd get ISO12800-like quality :).

And then we have processing. Lot to do with huge files. And reducing the IQ or resolution won't help much, because at the beginning (sensor -> processor) you're always working with RAWs.

"Coincidentally", MILCs with high IQ (like the a6000 and GH4) also max out at 10-12 fps.

V3 can do 60 fps, because it has a very specific sensor, which (among other things) needs little energy. It also has relatively low IQ, so there is not that much to process.

Think about it this way: if you double number of pixels, you double the amount of data. But if you go from 12-bit to 14-bit processing, you quadruple the information.

Sony has already prototyped full-frame mirrorless in the consumer grade (aka "beta-tester") A7/A7R. Everyone knows Sony and Nikon have a cozy relationship. Will they license the technology?

At the moment we already know the A7's fps performance. Not much to add here...

Flanking from the high-end would seem like a safe way for Nikon to introduce large-sensor mirrorless without cannibalizing DSLR sales. A mirrorless D5 with 20 fps C-AF capability could sell even higher than the D4 with its measly 11 fps.

Still, there is a lot to do. AF must also work in low light (low contrast) scenes. It doesn't.

And the battery life in MILCs is years behind DSLRs. Flagship Sony A7 is rated 340 shots (CIPA). This is what entry-level (small) DSLRs did 10 years ago. You could argue, that A7 is a tiny FF camera, so some sacrifices had to be made.
But Panasonic GH4 is hardly a small m4/3. Even though it doesn't have a mirror or and OVF, it weights 100g more than Nikon D3300. And (according to CIPA) makes a lot less photos than the Nikon.

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