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Manual Focus @ Infinity not working

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Offline waterwingz

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Re: Manual Focus @ Infinity not working
« Reply #60 on: 01 / November / 2014, 15:42:28 »
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The script does not do anything for the AF shot.  It should be just like what happens when you press the shutter button without CHDK loaded.  If it's not focussed then it would not have been focussed shooting normally.
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Offline eponymous

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Re: Manual Focus @ Infinity not working
« Reply #61 on: 01 / November / 2014, 15:46:10 »
Still on my A4000:

MF Test 2.2 65.5m SD modes:AF&MF
focus=1.1m hyperF=1.6m
AUTO: SD:1.1m mecha:666
warning : may not focus in AFL mode
AFL inf: SD:1.0m mecha:667
AFL hyp: SD:1.0m mecha:667
AFL hx2: SD:1.0m mecha:667
MF  inf: SD:infinity mecha:653
MF  hyp: SD:1.6m mecha:662
MF  hx2: SD:3.5m mecha:657
*** FINISHED ***

As for the images, #5 & 7 were out of focus as before. 6 was much better, similar in quality to the other 4, which were very similar to each other.

The mecha readings are similar to before also, with the out of focus MF lower than any of the others.

Interestingly oneaty's AUTO has the lowest mechs reading in his group, and it was out of focus. Something odd there maybe? Otherwise the mecha pattern is like mine.

(Still not getting that SD reading right.)
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Offline waterwingz

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Re: Manual Focus @ Infinity not working
« Reply #62 on: 01 / November / 2014, 16:39:37 »
Quote from: eponymous on 01 / November / 2014, 15:46:10
As for the images, #5 & 7 were out of focus as before. 6 was much better, similar in quality to the other 4, which were very similar to each other.
I'm at a loss here - even the mecha position values are not right.  Are you sure you have the camera pointed "off in the distance" at something more than 30' away ?

I've been playing with this on three of my cameras and I don't get anything like that.   I'm wondering if there is something more serious in the A4000 port at work here.

Quote from: eponymous on 01 / November / 2014, 15:46:10

warning : may not focus in AFL mode
That warning message tells us that CHDK will not try to set_focus() in AFL mode.  You might as well just disable that in the script parameters - it's not doing anything other than an autofocus shot.
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Offline oneaty

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Re: Manual Focus @ Infinity not working
« Reply #63 on: 01 / November / 2014, 16:50:20 »
Quote from: waterwingz on 01 / November / 2014, 16:39:37
I'm at a loss here - even the mecha position values are not right.  Are you sure you have the camera pointed "off in the

eponymous, did you set the AF to something like Center, instead of Face? I'm referring to the Canon menu, not CHDK.

What I mean is that you should have a fixed focus square at center, or else the AF can focus something closer, even if you aim at infinity. (sorry if I'm being too obvious...)
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CHDK a3100-100d-1.2.0-3643-full_ALPHA
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Offline fabri22

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Re: Manual Focus @ Infinity not working
« Reply #64 on: 01 / November / 2014, 17:18:40 »
Night test here but well-lighted street.
Ixus 125 on wide angle @ 65 - 5 - 10 - 20 mts. Distant subject.

#5, 6, 7 shot of series are always blurred.
#1, 2, 3, 4 seem fine

GO WW ! You can  :)


Code: [Select]
MF Test 2.2 65.5m SD modes:AF&MF
focus=infinity hyperF=1.2m
AUTO: SD:infinity mecha:359
warning : may not focus in AFL mode
AFL inf: SD:infinity mecha:362
AFL hyp: SD:infinity mecha:362
AFL hx2: SD:infinity mecha:362
MF  inf: SD:infinity mecha:379
MF  hyp: SD:1.1m mecha:385
MF  hx2: SD:2.5m mecha:382
*** FINISHED ***
MF Test 2.2 5.0m SD modes:AF&MF
focus=infinity hyperF=1.2m
AUTO: SD:infinity mecha:353
warning : may not focus in AFL mode
AFL inf: SD:infinity mecha:360
AFL hyp: SD:infinity mecha:360
AFL hx2: SD:infinity mecha:360
MF  inf: SD:3.8m mecha:381
MF  hyp: SD:1.1m mecha:385
MF  hx2: SD:2.5m mecha:382
*** FINISHED ***
MF Test 2.2 10.0m SD modes:AF&MF
focus=infinity hyperF=1.2m
AUTO: SD:infinity mecha:361
warning : may not focus in AFL mode
AFL inf: SD:infinity mecha:357
AFL hyp: SD:infinity mecha:357
AFL hx2: SD:infinity mecha:357
MF  inf: SD:infinity mecha:380
MF  hyp: SD:1.1m mecha:385
MF  hx2: SD:2.5m mecha:382
*** FINISHED ***
MF Test 2.2 20.0m SD modes:AF&MF
focus=infinity hyperF=1.2m
AUTO: SD:infinity mecha:362
warning : may not focus in AFL mode
AFL inf: SD:infinity mecha:362
AFL hyp: SD:infinity mecha:362
AFL hx2: SD:infinity mecha:362
MF  inf: SD:infinity mecha:380
MF  hyp: SD:1.1m mecha:385
MF  hx2: SD:2.5m mecha:382
*** FINISHED ***
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Offline eponymous

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Re: Manual Focus @ Infinity not working
« Reply #65 on: 01 / November / 2014, 17:28:48 »
Quote from: oneaty on 01 / November / 2014, 16:50:20
Quote from: waterwingz on 01 / November / 2014, 16:39:37
I'm at a loss here - even the mecha position values are not right.  Are you sure you have the camera pointed "off in the

eponymous, did you set the AF to something like Center, instead of Face? I'm referring to the Canon menu, not CHDK.

What I mean is that you should have a fixed focus square at center, or else the AF can focus something closer, even if you aim at infinity. (sorry if I'm being too obvious...)

Yes, center, all the little goodies off. Definitely pointed at something in the distance, but I wonder whether the camera is looking for other stuff too, outside the square. The DOF display often shows numbers that are not INF while I do this.

Re-did it with another target:

MF Test 2.2 65.5m SD modes:AF&MF
focus=1.4m hyperF=1.6m
AUTO: SD:1.3m mecha:664
warning : may not focus in AFL mode
AFL inf: SD:1.3m mecha:664
AFL hyp: SD:1.3m mecha:664
AFL hx2: SD:1.3m mecha:664
MF  inf: SD:infinity mecha:649
MF  hyp: SD:1.6m mecha:662
MF  hx2: SD:3.5m mecha:657
*** FINISHED ***

Image 5 is clearly the blurriest and 7 is better, but not great.

WW, what's up with the SD readings? That those aren't right is bothering me.
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Offline waterwingz

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Re: Manual Focus @ Infinity not working
« Reply #66 on: 01 / November / 2014, 17:38:06 »
Quote from: fabri22 on 01 / November / 2014, 17:18:40
warning : may not focus in AFL mode
Well, 2,3,4 are just AF shots - CHDK is ignoring the set_focus requests in AFL mode.  You can stop testing that mode.

Quote
Night test here but well-lighted street.
Ixus 125 on wide angle @ 65 - 5 - 10 - 20 mts. Distant subject.
#5, 6, 7 shot of series are always blurred.
#1, 2, 3, 4 seem fine
Hmmm ... 5,6,&7 are at different set_focus values and still blurred - even though #6 is essentially the same mecha position as the AF value.

I feel like I'm watching a random number generator at work here.
« Last Edit: 01 / November / 2014, 17:39:44 by waterwingz »
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Offline fabri22

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Re: Manual Focus @ Infinity not working
« Reply #67 on: 01 / November / 2014, 18:10:16 »
Quote from: waterwingz on 01 / November / 2014, 17:38:06
- even though #6 is essentially the same mecha position as the AF value.
Doesn't look the same mecha to me with my test ... it maybe you're referring to eponymous's test?
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Offline waterwingz

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Re: Manual Focus @ Infinity not working
« Reply #68 on: 01 / November / 2014, 20:50:09 »
Quote from: fabri22 on 01 / November / 2014, 18:10:16
Doesn't look the same mecha to me with my test ... it maybe you're referring to eponymous's test?
Thanks - missed that.

I seem to recall you tried to find a position that would focus at infinity by gradually increasing the value passed to set_focus().  And I also recall that you had no success?  So maybe this attempt to find values less that 65535 that match the autofocus infinity position is pointless.  Something else is wrong.  I'll keep working on my "find the SD override setting that gives the same mecha position value as AF does" script but I'm not hopeful.
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Offline fabri22

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Re: Manual Focus @ Infinity not working
« Reply #69 on: 02 / November / 2014, 04:38:59 »
Quote from: waterwingz on 01 / November / 2014, 20:50:09
I seem to recall you tried to find a position that would focus at infinity by gradually increasing the value passed to set_focus().  And I also recall that you had no success?
Memory serves you correctly
Quote
So maybe this attempt to find values less that 65535 that match the autofocus infinity position is pointless.  Something else is wrong.
Déjà vu ... Agree with you 
Quote
I'll keep working on my "find the SD override setting that gives the same mecha position value as AF does" script but I'm not hopeful.
Please, don't abandon hope  ... and, above all, the "orphans"  :)
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