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Started 10 months ago | Discussions thread
SQLGuy
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Re: Pat: the most significant, major difference btw. OLED VFs from N7 vs. A7...
In reply to jpr2, 10 months ago

jpr2 wrote:

PVCdroid wrote:

I've asked this a few times and never get a good response. What is the difference in the A7 or A7R vs. NEX-7, 6 or even 5N EVF? The resolution and size specs appear to be the same. Is it brighter or what?

...lies in their sensors - affecting the quality of the input signal and S/R ratios, which influence esp. greatly reduced DR in shadows and highlights as rendered by EVFs in general - these are the two most affected areas of poor EVFs performance, as they most easily gave up in both rather dark and very bright scenes with lots of contrast. It suffices to close one's legacy MF lens from, say, f/2.8 to f/8, thus cutting the available light eightfold to witness the adverse effects on N7,

The better eye relief due to somewhat larger optics in newer implementation of the same OLED VF is helping a bit too, but it isn't decisive factor,

jpr2

Hmm.. so, you're saying that the A7 EVF looks better because the A7 sensor (24MP FF) is better than the N7 sensor (24MP APS-C)?

So, you're thinking that Sony didn't really need to bother putting better glass in front of the EVF in A7 and just the better sensor would already have made a big difference? I'm not convinced. The lack of the rainbow effect is, for me, a big improvement in the A7, and I can't see how the difference in sensors would have anything to do with that.

Also, what is S/R ratio?

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A7 with kit lens and a number of legacy lenses (mostly Canon FD)

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