Headline - DSLRs have imprecise focusing due to their mirrors

Started Apr 5, 2014 | Discussions thread
timo Veteran Member • Posts: 5,086
Re: Headline - DSLRs have imprecise focusing due to their mirrors

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

I haven't trudged through the whole of this thread so forgive me if I am repeating what someone else has said - imprecision can creep in because of either misalignment of the mirror, or misalignment of the focusing screen. Which is why focusing screens sometimes require shims to make them accurate. DSLRs seem to be assembled with much looser tolerances than older film SLRs fully dependent on manual focusing.

With LV = mirrorless, what you see is what you get, although even focus peaking is not always all that precise unless you can magnify the image on the screen.

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tim
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