sx40HS focus to infinity not doing it. - page 6 - General Help and Assistance on using CHDK stable releases - CHDK Forum
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sx40HS focus to infinity not doing it.

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Offline radioman193

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Re: sx40HS focus to infinity not doing it.
« Reply #50 on: 22 / April / 2012, 23:14:29 »
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ALL 6 Photos are HERE.
and WITH there Exif Data intact.
And all done on a tripod....
And No filters....


http://www.mediafire.com/download.php?s52sqv7xq5ru5sz

http://www.mediafire.com/download.php?s0fywnatz10pdf8

http://www.mediafire.com/download.php?pna1obs6ifou3sn

http://www.mediafire.com/download.php?hk0k3gddcg69hic

http://www.mediafire.com/download.php?kr29kzzjzb6mzer

http://www.mediafire.com/download.php?m7dayhngj7s6tmq
« Last Edit: 22 / April / 2012, 23:22:11 by radioman193 »
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Offline reyalp

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Re: sx40HS focus to infinity not doing it.
« Reply #51 on: 23 / April / 2012, 00:33:05 »
Thanks.

The difference is quite striking between NOCHDK.JPG and WITHCHDK.JPG. I've attached a 1:1 png crop.

I dumped and diffed the exif from each with exiftool -v -v -v and don't see anything that looks relevant. Output is attached if anyone else wants to look at it.

Puzzling  :blink:

Not sure where to go next. Testing a CHDK build with capt_seq disabled might be worthwhile.

edit:
@radioman193 what canon firmware version is your SX40 (1.00d, 1.00f etc) ?
« Last Edit: 23 / April / 2012, 00:37:29 by reyalp »
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Offline radioman193

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Re: sx40HS focus to infinity not doing it.
« Reply #52 on: 23 / April / 2012, 08:21:29 »
sx40hs-100i-1.0.0-1820-full
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Offline blackhole

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Re: sx40HS focus to infinity not doing it.
« Reply #53 on: 23 / April / 2012, 13:47:53 »
If you use custom Auto ISO try setting "IS factor" to 8.
The only way I got so blurriness is to use "IS" and the camera on a tripod.
Are you sure the "IS" is off in Canon menu?
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Offline radioman193

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Re: sx40HS focus to infinity not doing it.
« Reply #54 on: 23 / April / 2012, 14:18:42 »
lol ...
yes im shure  ::)

IS
AND
Powered IS

are OFF.
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Offline radioman193

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Re: sx40HS focus to infinity not doing it.
« Reply #55 on: 23 / April / 2012, 14:35:59 »
i Only see this isue at a Block or more away..

Everything less then a block away is Perfect.











« Last Edit: 23 / April / 2012, 14:40:58 by radioman193 »
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Offline reyalp

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Re: sx40HS focus to infinity not doing it.
« Reply #56 on: 24 / April / 2012, 00:21:52 »
Quote from: radioman193 on 23 / April / 2012, 08:21:29
sx40hs-100i-1.0.0-1820-full
OK, here's a test build with capt_seq disabled.

This is *not* a fully functioning CHDK, it's just a test that might help us narrow down where the problem is. Most CHDK shooting related features (overrides, bracketing, raw etc) will not work with this build.

If you can take test shorts with this build, and without any CHDK, that may help us. Please upload the original files like you did on the previous shots.
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Offline radioman193

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Re: sx40HS focus to infinity not doing it.
« Reply #57 on: 24 / April / 2012, 08:33:32 »
ok.......
it looks like it Might be better now...
but i will let your eyes decide this.

http://www.mediafire.com/download.php?w2aw5n6zi8wdb7j

http://www.mediafire.com/download.php?kqmacdh3p5218n8

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Offline reyalp

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Re: sx40HS focus to infinity not doing it.
« Reply #58 on: 24 / April / 2012, 12:56:38 »
Quote from: radioman193 on 24 / April / 2012, 08:33:32
ok.......
it looks like it Might be better now...
but i will let your eyes decide this.

http://www.mediafire.com/download.php?w2aw5n6zi8wdb7j

http://www.mediafire.com/download.php?kqmacdh3p5218n8
Those images look pretty much identical to me, which suggests the problem involves one of the capt_seq modifications that always runs. If no one else beats me to it, I'll try to take a look and see if I can narrow it down a bit more. I don't have much time on weekdays though, so it will be slow.

Just to be clear, that build is *not* a fix even if it appears to "fix" the problem, it just has a big chunk of CHDK disabled.
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Offline philmoz

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Re: sx40HS focus to infinity not doing it.
« Reply #59 on: 24 / April / 2012, 17:39:20 »
Quote from: radioman193 on 24 / April / 2012, 08:33:32
ok.......
it looks like it Might be better now...
but i will let your eyes decide this.

http://www.mediafire.com/download.php?w2aw5n6zi8wdb7j

http://www.mediafire.com/download.php?kqmacdh3p5218n8


I still haven't had a chance to test mine (weather here is awful at the moment).

I'm not sure what's going on but those two images are odd.
The CHDK image is much better on the left 2/3rds of the image; but the stock image is better on the right 1/3rd.
Look at the rock at the bottom right on each image or the treetops on the right - the stock image appears focused and the CHDK one does not.
In the middle or left edge the CHDK image appears focused and the stock image doesn't.

A de-centered lens can cause focus variations across the frame; but this is usually fixed and does not change from image to image.

Phil.
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