G12 - Subject Distance Bracketing mode query - page 2 - Hello, I'm a NEWBIE - HELP!! (Newbies assistance, User Guides and thank you notes)

msl

1276
A720 IS, SX220 HS 1.01a

Re: G12 - Subject Distance Bracketing mode query

« Reply #10 on: 14 / November / 2011, 08:25:46 »

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Quote from: achillies on 13 / November / 2011, 16:16:18

I would not be able to help you because of my lack of understanding of the focus settings/zoom range, but recently I have been working with manual focus in the GUI's (ptpcamgui and sdmcongui),

Sorry, a offtopic question: What is sdmcongui?

Thx msl

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Microfunguy

4037

Re: G12 - Subject Distance Bracketing mode query

« Reply #11 on: 14 / November / 2011, 10:54:43 »

Quote from: msl on 14 / November / 2011, 08:25:46

What is sdmcongui?

A little application to simplify using an SDM version of ptpcam.

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Andy Y

Re: G12 - Subject Distance Bracketing mode query

« Reply #12 on: 14 / November / 2011, 11:01:42 »

Quote from: philmoz on 13 / November / 2011, 15:24:38

Try this test:
- enable focus bracketing with +6000mm settings
- set the camera to manual focus, focus on something very close to the lens (<10cm)
- take 3 shots in continuous mode

You should be able to easily see the focus change in these shots.

Phil.

Thanks Phil,

I have now tried it with all manner of different permutations e.g. Bracket Value of 100 and a Value Factor of 100 focussed down to around 7cm and all shots (20+) remain focussed on the starting position.

I think I'll just have to resign myself to the fact that it won't play ball with my camera. A shame as a lot of my work involves stacking 30+ images from 10cm through to 3.0m.

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Microfunguy

4037

Re: G12 - Subject Distance Bracketing mode query

« Reply #13 on: 14 / November / 2011, 11:26:35 »

Quote from: Andy Y on 14 / November / 2011, 11:01:42

I think I'll just have to resign myself to the fact that it won't play ball with my camera.

I do not believe that.

Phil is a G12 user and it works for him.

He will be fast asleep right now.

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fe50

3132
IXUS50 & 860, SX10 Star WARs-Star RAWs

Re: G12 - Subject Distance Bracketing mode query

« Reply #14 on: 14 / November / 2011, 12:33:57 »

Quote from: Andy Y on 14 / November / 2011, 11:01:42

...and all shots (20+) remain focussed on the starting position.

Any chance you've set the Disable Overrides option in the CHDK menu ?

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Andy Y

Re: G12 - Subject Distance Bracketing mode query

« Reply #15 on: 14 / November / 2011, 13:46:05 »

Quote from: fe50 on 14 / November / 2011, 12:33:57

Quote from: Andy Y on 14 / November / 2011, 11:01:42
...and all shots (20+) remain focussed on the starting position.
Any chance you've set the Disable Overrides option in the CHDK menu ?

I've tried with Disable Overrides in each of the On/Off/Disable states to no apparent effect.

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philmoz

3332

Re: G12 - Subject Distance Bracketing mode query

« Reply #16 on: 14 / November / 2011, 14:30:56 »

Quote from: Andy Y on 14 / November / 2011, 11:01:42

Quote from: philmoz on 13 / November / 2011, 15:24:38
Try this test:
- enable focus bracketing with +6000mm settings
- set the camera to manual focus, focus on something very close to the lens (<10cm)
- take 3 shots in continuous mode

You should be able to easily see the focus change in these shots.

Phil.

Thanks Phil,

I have now tried it with all manner of different permutations e.g. Bracket Value of 100 and a Value Factor of 100 focussed down to around 7cm and all shots (20+) remain focussed on the starting position.

I think I'll just have to resign myself to the fact that it won't play ball with my camera. A shame as a lot of my work involves stacking 30+ images from 10cm through to 3.0m.

Did you try the specific test I posted - on my camera I can cleary see the focus difference in this test (I can also hear the camera re-focus between shots). When I do this test I have something close to the camera (5-10cm) and something is the distance (>5m). I manually focus on the close object which is then in focus for the first shot, and then the far object is in focus for the second.

A bracket value of 100 with a fill factor of of 100 won't work.
The allowed range of values is from 68 to 65535, where 65535 = infinity.
100x100 = 100,000 which would try to push the focus outside the allowed range.

Also make sure the 'Override Sub. Dist. Value' setting is off (Value Factor = Off) in the Extra Photo Operations menu. Only have the override in the 'Bracketing in Continuous Mode' turned on.
If you enable the main subject distance override it will take precedence and the bracketing override won't work.
(This should probably be fixed so the main override only sets the starting value and the bracketing still works.)

Phil.

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Andy Y

Re: G12 - Subject Distance Bracketing mode query

« Reply #17 on: 23 / November / 2011, 03:15:39 »

Quote from: philmoz on 14 / November / 2011, 14:30:56

Did you try the specific test I posted - on my camera I can cleary see the focus difference in this test (I can also hear the camera re-focus between shots). When I do this test I have something close to the camera (5-10cm) and something is the distance (>5m). I manually focus on the close object which is then in focus for the first shot, and then the far object is in focus for the second.

A bracket value of 100 with a fill factor of of 100 won't work.
The allowed range of values is from 68 to 65535, where 65535 = infinity.
100x100 = 100,000 which would try to push the focus outside the allowed range.

Also make sure the 'Override Sub. Dist. Value' setting is off (Value Factor = Off) in the Extra Photo Operations menu. Only have the override in the 'Bracketing in Continuous Mode' turned on.
If you enable the main subject distance override it will take precedence and the bracketing override won't work.
(This should probably be fixed so the main override only sets the starting value and the bracketing still works.)

Phil.

Sorry guys, I'm still struggling with this and I've become a bit confused with some of the info.

I can't work out how to do the +6000mm settings as the Subj.Dist Bracket Value only goes from 0-100 and you've advised to leave the Value Factor off.

To summarise the settings I've tried (among many) these are the parameters I've most recently tried without effect@

Subject Distance Bracket Value = [20]
Value Factor =

Bracketing Type

Clear Bracket values on Start [Unchecked]

Back onto the Extra Photo Operations Menu
Disable Overrides [Off]
Include AutoISO & Bracketing [Unchecked]

I then press the shutter button until the script is finished; go out of the <Alt> menu and using M mode have the Continuous shooting enabled, MF on to the closest point.

I've tried using both the shutter button and the remote release and I can't hear any re-focussing go on and as long as I've got the shutter pressed the camera just keeps continuous shooting of the nearest point.

Thanks,

A

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philmoz

3332

Re: G12 - Subject Distance Bracketing mode query

« Reply #18 on: 23 / November / 2011, 03:32:05 »

There are two subject distance override values and value factors.
The first is in the 'Extra Photo Operations' menu - leave this one turned off.
The second is in the 'Bracketing in Continuous Mode' menu - turn this one on.

To do the +6000 test, set the override value to 60 and the value factor to 100 in the 'Bracketing in Continuous Mode' menu. Make sure the other one is off.

Phil.

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Andy Y

Re: G12 - Subject Distance Bracketing mode query

« Reply #19 on: 23 / November / 2011, 03:46:04 »

Thanks for bearing with me on this Phil. I've done exactly as you've described above and still no joy.

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