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bad performers on NX500?

Started Jul 17, 2016 | Discussions thread
ttbek Veteran Member • Posts: 4,869
Re: bad performers on NX500?

Absolutely, 4k being only like 8 MP is small enough that all the ghosting on high contrast edges and other issues are not visible.  The 4k with this lens looks sharp and issue free.  Actually, the lens is quite sharp at 18mm even for photos.... but it's falling apart by 35mm already.  Focus is fast but slow, the lens focus is very fast but I think the camera can becomes slow with it at longer focal lengths.  I think what is happening is that the aperture is closing down too much and the PDAF isn't getting enough light at f/6.3 so it may be relying on CDAF.  It seems to scan through the focus range when at 200 instead of knowing where it should go.  So the lens focus is very fast but the camera doesn't always manage to take advantage of that.  Some changes to the AF algorithm could help that significantly.  For instance if they did a binary search for focus instead of doing the CDAF continuously.

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Canon PowerShot SX10 IS Canon EOS 5D Samsung NX300 Canon EOS Rebel SL1 Samsung NX30 +37 more
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