What a bias A7/r review using third party lens!

Started Jan 21, 2014 | Discussions thread
quezra Veteran Member • Posts: 3,915
Re: What a bias A7/r review using third party lens!

Well your framing is different, but it doesn't look a whole lot sharper than the in-focus parts of his portrait - look at the hair around the hair band and the skin just under the woman's eye - very sharp.  What he didn't count on is that there is glow which upsets contrast-detect algorithms, and of course ultra-thin DoF at f1.2 on a FF camera.  So he's blaming the focus peaking for him missing, but it's actually a function of the lens + aperture / DoF + contrast-detect focus peaking - though in the review he assigns all of that blame to focus peaking... well duh.  With more experience, he might also have realised that the 'peak' areas are not actually uniform across the entire highlighted area - they don't necessarily match a 'zone of confusion' wherein everything is equally sharp on the sensor - but that's to do with the fact that contrast-detect is a proximate equivalent of 'in-focus' area but not exactly the same thing - and it is only with experience that you learn where in the peak areas you need your focus to be to nail it.

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