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FORUMS Sony Cameras, Lenses & Accessories Sony Cameras 
Thread started 22 Jul 2018 (Sunday) 12:06
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Auto ISO ok? Less sharp pics with Metabones 5

 
CanonYouCan
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Post edited over 2 years ago by CanonYouCan. (2 edits in all)
     
Jul 22, 2018 12:06 |  #1

I'm just back from holiday and followed the Tony Northrup settings for my new A7III, on the EVF pics seemed fine, but in reality on screen they are not so sharp :(
My settings were as drive mode continuous focussing + AFC, auto ISO and I tested blue mode & advanced (red) mode on the MB5 adaptor.
First I had problems with the eye detection, it sometimes didn't work (Canon 24-70 2.8L MKI).

Today I changed some settings according to this video + I chose single shooting & focus mode single-shot AF and full raw.
https://www.youtube.co​m/watch?v=zPpelMC75lw&​t=13s (external link)

Inside I made some testshots and I notices the auto-iso chose ISO160 & ISO500 which seems very low.
With my Canon 6D I took shots at iso 1600-3200 inside, in both videos people rely on the auto-iso.

I know the Canon 24-70 2.8 isn't sharp wide open, but even at f5 or higher pics wheren't that sharp (auto-iso also).
Just tested with the pin-sharp Sigma 50 1.4 Art & eye AF and also focussing on the eyes, but again the eyes are not that sharp like the times of my Canon 6D.

Could this be because of the Metabones adaptor that degrades IQ or the built in auto-iso that isn't so accurate ?
I relied on both without testing before as my cam just arrived the day before we left on holiday, i'll adjust sharpness in PP....

Faststone image viewer directly recognised the ARW files, will check if PS & LR still need an extra update.


Sony A7 III | Metabones V | Canon 16-35 F4 L | Sigma 85 1.4 Art | 70-200 2.8L II
Lighting : Godox AD600B TTL + Godox V860II-S + X1T-S
Modifiers: 60cm Collapsible Silver Beautydish + grid | Godox 120cm Octagon softbox + grid + Speedlite Flash bender
Tripod: Vanguard Alta 253CT carbon

  
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jay25
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Oct 17, 2018 11:21 |  #2

Why are you shooting auto iso ? Is there a benefit to it?




  
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AS_Photo
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Oct 17, 2018 11:28 |  #3

ISO has nothing to do with focus locking. It will only affect sharpness by either introducing too much noise or not being high enough to get an appropriately fast shutter speed for the shooting conditions.




  
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Auto ISO ok? Less sharp pics with Metabones 5
FORUMS Sony Cameras, Lenses & Accessories Sony Cameras 
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x 1600
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