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NX1 autofocus with 30mm f2

Started Apr 26, 2016 | Discussions thread
TJL LTFF
TJL LTFF Senior Member • Posts: 1,728
Re: NX1 autofocus with 30mm f2

TJL LTFF wrote:

I will check that combo out for its low light focusing speed and report back.

I just did a focusing test of the 30mm on an NX500 and NX1 in a dark environment. Using SAF, Focus Assist Light off  and varying focus box sizes I saw negligible focus speed differences between the two combos; both struggled.

Turning the Focus Assist Light on helped some with the NX500. But one thing that was a definite plus for the NX1 was being able to use the lowest of three brightness settings for the light. I was testing the focus by picking objects from 5 to 21 feet. In this distance range the single bright level on the NX500 only helped a little; whereas the lowest level on the NX1 improved the  focusing speed nicely. This was still lagging well behind the 16-50 S speed on the NX1 at 30mm focal length with no light assist. I tried the 16-50 S on the NX500 and its performance was decidedly worse. I wonder why?

 TJL LTFF's gear list:TJL LTFF's gear list
Sony RX1R II Samsung NX1 Samsung NX500 Samsung NX 30mm F2 Pancake Samsung NX 18-55mm F3.5-5.6 OIS +10 more
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