Is the Panny 20mm f/1.7 slow to focus on the GX7?

Started 5 months ago | Questions thread
rhlpetrus
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Re: Thank all, next question then Re: Is the Panny 20mm f/1.7 slow to focus on the GX7?
In reply to SLOtographer, 5 months ago

SLOtographer wrote:

jhinkey wrote:

My experience with the new 20/1.7 on my GX7 mirrors that of Anders - if it's focusing on something not near it's pretty quick. It takes about a second to rack all the way from MFD to infinity which can seem like forever if you are in a hurry. Small AF changes at far distances are pretty fast - fast enough at least.

Also, it seems to me that the size of the AF point box seems to affect it as well - i.e., the smaller the size of the AF box the slower it is and is somewhat less reliable, but it may just be me.

Thanks all. Now my question then is: do other fast primes work similarly or are newer ones better in that respect. Af speed is my main issue with non-dslrs, I want to corner that wrt m43 before I move into the system.

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Renato.
http://www.flickr.com/photos/rhlpedrosa/
OnExposure member
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Good shooting and good luck
(after Ed Murrow)

The other primes and zooms AF much faster. In fact in AFS I don't see a real-world difference for normal subject differences. If you are shooting lots of sports with long lenses and always using AFC/AI-Servo, then mirrorless is not for you. Portraits, kids, youth soccer, M43 is fine.

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SLOtographer
Gear: GH3, 7-14/4, 17/1.8, 25/1.4, 45/1.8, 35-100/2.8, 14-140/4-5.8
Canon 5D3, 35/2IS, 85/1.8, 135L, 580EXII
Ricoh GR

No, not sports, just no lag to respond to a changing situation. I use only single shot mode, never continuous.

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Renato.
http://www.flickr.com/photos/rhlpedrosa/
OnExposure member
http://www.onexposure.net/
Good shooting and good luck
(after Ed Murrow)

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