Headline - DSLRs have imprecise focusing due to their mirrors

Started Apr 5, 2014 | Discussions thread
Lee Jay Forum Pro • Posts: 52,229
Re: Headline - DSLRs have imprecise focusing due to their mirrors
1

Greg A A wrote:

peevee1 wrote:

Live view on DSLR is not "just like mirrorless camera", it is awfully slow. And mirror does not give you better image quality, it only gives you imprecise focusing.

Interesting premise; DSLRs have imprecise focusing because of their mirror.This is one of the wildest claims I have yet heard. Can you back that up with some facts?

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f8 and be there

It only makes sense . It is always difficult to fine tune any two different light paths to be exactly the same distance . And when they must also have the exact same distance over the area of a flat sensor and a focus screen , the difficulty gets complicated .

In My opinion , it should all be done on the sensor using only one light path .

Dusty

That isn't how dSLRs work. The light paths aren't the same length and they aren't designed to be.

The difference in light path length is calibrated out in a software adjustment. The only requirement is that the difference remain constant.
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Lee Jay

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