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Re: Focus bug with my P7700?
In reply to Greynerd,
5 months ago
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Greynerd wrote:
Rotorwash4944 wrote:
I believe I had a similar issue as to what you are describing... I was trying to focus on a white church from my car window, and I achieved lock. Then I zoomed to a better crop, and I could not attain lock. When I zoomed out, I could not attain lock again either. I thought it might be because the white church was too featureless, but it perplexed me enough to return mine to B&H for an exchange. I haven't duplicated the problem yet, and I cannot honestly say the focus ability of the second copy is any better, but I will try to do your test and report back. I really do love the camera otherwise (see my post, "P7700 vs G15: my impressions"). I too am hoping they can do a firmware upgrade, and while theyre at it, also include a shorter minimum interval on their built-in intervalometer!
All of the above not withstanding, I was in NYC the other night, and experienced no significant focus issues, even in low light. I thought the camera performed great.
The thing is that these contrast detect cameras often need a bit of help and I usually lock focus by putting the focus circle over the edge of the object, half button press and reframe. Just putting the focus circle over a bland featureless centre of an object will cause any of these cameras to struggle. People also make it worse by using a smaller focus circle which makes it even more difficult for the camera to find contrast. It is not clear from your post if you did these things and none of your subjects seemed to require rapid focusing.
If you are just framing and expecting the camera to sort out focus automatically you will get problems and this should only really done if you are in a hurry. These cameras have generous depth of field so for example the edge of the church is probably going to get the whole church in focus. Possibly you are doing this but it is not clear.
Greynerd,
Yes, I normally do what you described, i.e. pick the edge of my subject to attain lock, then recompose. And I've also found that using the larger center focus area does help achieve lock, like you said, the depth of field is great enough so as not to be a factor. However, in that one case of the church, I used the smaller center focus, and I had some difficulty even when using an edge.
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