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-   -   question for the E-M1 owners on CDAF compatible 4/3 lenses (https://forums.steves-digicams.com/olympus-micro-four-thirds-103/question-e-m1-owners-cdaf-compatible-4-3-lenses-210244/)

ramcewan Mar 2, 2014 8:05 AM

question for the E-M1 owners on CDAF compatible 4/3 lenses
 
So this question is for the E-M1 owners;

when you use a CDAF compatible lens like the 9-18, 14-54 mk ii or the 70-300mm on the E-M1 how does the E-M1 focus them?

does the E-M1 use CDAF or PDAF as it would with the non-CDAF compatible lenses like the 7-14, 12-60, 50, 50-200, etc?

Is the overall speed of AF the same or better than on the E-M5 or other CDAF only bodies?

Thanks!

folob Mar 2, 2014 11:12 AM

Hi,

As soon as the EM-1 detects a 4/3 lens, it is using the PDAF. There is nothing to setup. The AF on those lenses is about the same as my E-30.

Gilles

ramcewan Mar 2, 2014 11:49 AM

Quote:

Originally Posted by folob (Post 1369211)
Hi,

As soon as the EM-1 detects a 4/3 lens, it is using the PDAF. There is nothing to setup. The AF on those lenses is about the same as my E-30.

Gilles

so it would be potentially worse AF performance for the CDAF compatible lenses then you would get on an EM-5 which would only use CDAF and have faster AF than an E-30?

folob Mar 2, 2014 11:58 AM

The way I see it (for now) is that AF is way better than the EM-5 ... and probably 90% of the E30/E3/E5 ... which is not bad but not up to par with native m4/3 lenses.

Greg Chappell Mar 2, 2014 5:05 PM

AF with Micro Four-Thirds lenses is the same whether you are using an E-M5 or E-M1. Exactly the same. Really, really fast.

What the E-M1 does much, much better than the E-M5 is AF with the four-thirds Zuikos. It focuses the 50mm f2 Macro Zuiko almost as well as the E5 DSLR, which was the best DSLR to use that lens. It also handles the original, Non-SWD 50-200mm f2-8-3.5 really well, and I see plenty of four-thirds users very happy with the performance of their four-thirds lenses like the 12-60, 50-200 SWD's, 11-22, 9-18 and others on their E-M1's.

ramcewan Mar 2, 2014 6:14 PM

okay - so it sounds like all 4/3 lenses focus better on the E-M1, even those CDAF compatible ones like the 9-18mm, 14-54 mk II and 70-300mm which focus reasonably well on the CDAF only bodies.

I use the 14-54 mk II and 70-300mm, both CDAF compatible, on my CDAF only body, the E-PL2, with reasonable results and was wondering if I would get improvement using these on an E-M1 beyond the improvement I would get using them on a more modern CDAF only body, like the E-M5 or E-M10 which have faster CDAF than my E-PL2.

Seems the answer is clear, if I can swing an E-M1 I should...

Greg Chappell Mar 2, 2014 9:16 PM

This guy is one of my favorites, and he's using all his super-speed/dollar Four-Thirds lenses with his E-M1..

http://www.dpreview.com/forums/post/53229654

His web page..

http://www.pbase.com/eaaseth/root&view=recent


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