New Olympus 17mm 1.8

Started 9 months ago | Discussions thread
texinwien
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Re: New Olympus 17mm 1.8
In reply to tt321, 9 months ago

tt321 wrote:

texinwien wrote:

tt321 wrote:

texinwien wrote:

In my experience, the condition in which the 20mm f/1.7 is slower to autofocus (that of switching back and forth between focusing on something between 0.2 and 0.5 meters and something between 0.75 meters and infinity) is an absolute rarity.

Not so fast.

Whoah, Nelly!

Please take a moment to read the portion of the quote I bolded above. Then take a moment to read the next one. It directly followed the above passage in my post, but you snipped it out in your reply to me:

I accept that this may not be the case for others, however.

Also this one, with which I signed off:

Or just about 99.9% of all photographic situations in which I find myself. Again, YMMV.

I believe I made it crystal clear that I was talking specifically about my experience, and that other photographers may have different needs. Do you disagree?

I sometimes have this work flow: See something, turn on the camera, (roughly) frame, focus, and take one shot or a number of bracketed shots. Turn off the camera.

My E-M5 is set to reset focus to infinity when I turn it on. It's usually finished with that before I am able to get the camera to my eye and frame my shot. In over 5,000 photos taken with my E-M5 and 20mm (one of 9 native m43 lenses I own), I cannot recall one instance in which I missed a shot because of slow focus with the 20mm immediately after turning my E-M5 on.

Again, that's my experience. YMMV (look it up if you don't know the meaning).

You seem to think that I was accusing you of generalizing your personal experiences to others, which I feel the need now to assure you was not my intention at all. For any confusion created, my apologies.

Starting out a reply with 'not so fast' implies that you disagree with and are about to correct whatever the person you're responding to has said. I'm not aware of any other commonly-accepted interpretation of that popular phrase.

Thanks for clarifying your meaning.

What I did was to supply another set of personal experiences, basically joining you in the task of filling out the entire set of personal experiences.

Not all cameras seem to have the facility of resetting lens focus to infinity? I must admit I have not seen or investigated this possibility with my G3.

I had a quick look at the G3 manual online, but didn't find any references to infinity focus. I'm not sure whether the G3 is able to reset the lens to infinity focus when the camera powers on, or not.

Your comments did spur me to do some quick and dirty tests, comparing the time to first photo after powering on with my 20mm and my 12-40mm. The 20mm does strike me as taking a little more time to 'warm up' than the 12-40mm, but the difference appears to be (rough estimation) less than 500ms. Not a world of difference, but it could sometimes be significant in the use-case you described.

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Canon EOS 300D Olympus OM-D E-M5 Panasonic Lumix DMC-GM5 Canon EF-S 18-55mm f/3.5-5.6 Panasonic Lumix G 20mm F1.7 ASPH +15 more
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