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SD1000 Aperture Settings

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Offline ixus

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SD1000 Aperture Settings
« on: 12 / February / 2008, 14:59:50 »
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In AllBest Build #31, the manual aperture settings are disabled via:

gui.c
Code: [Select]
#if !defined (CAMERA_ixus700_sd500) && !defined (CAMERA_ixus800_sd700) && !defined (CAMERA_a560) && !defined (CAMERA_ixus850_sd800) && !defined (CAMERA_ixus70_sd1000)

     {LANG_MENU_OVERRIDE_AV_VALUE,        MENUITEM_ENUM,    (int*)gui_av_override_enum },
I removed the !defined (CAMERA_ixus70_sd1000) compiled, tested. The aperture override works on the SD1000, however, as far as I can tell, there are only 2 F-Stops that are present on the SD1000, f2.8 and f8.0. If anyone is able to get other fstops in any mode, with no zoom, please post.

Assuming this is the case, can you please update build #32 to enable manual aperture settings with the values of f2.8 and f8.0, for the SD1000

Thanks.

« Last Edit: 19 / February / 2008, 00:38:41 by ixus »
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Offline jetzt

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Re: SD1000 Aperture Settings
« Reply #1 on: 13 / February / 2008, 10:14:40 »
I think this is an hardware limit, something like  snap-aperture which has only two steps ...
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Offline jjoshua

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Re: SD1000 Aperture Settings
« Reply #2 on: 18 / February / 2008, 19:07:49 »
Is this the same on the SD500?  I would really like to have an aperture override.
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Offline ixus

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Re: SD1000 Aperture Settings
« Reply #3 on: 19 / February / 2008, 00:47:06 »
I'm not sure. If you know how to compile, go to gui.c and remove "if !defined (CAMERA_ixus700_sd500)" from the line I have posted in my first post, compile, test, and post back the results. If not, I can compile it, post it, and you can see if it works (state your firmware version). I have posted several questions and comments on the wrongly disabled aperture issue, but never got a reply from the AllBest development crew.

How many f stops does your camera have? I'm guessing you would only be able to get a couple f stops, like on my sd1000.
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Offline Allbest

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Re: SD1000 Aperture Settings
« Reply #4 on: 19 / February / 2008, 03:31:12 »
ixus jjoshua jetzt
Hi, guys!
Please read this thread:
IXUS800(SD700) inside the lens images. There is a ND filter!
There is no iris mechanism in Ixus (SD) model set. I'm agree with it. Next build (current week) will be contain capability of ND-filter for this model set
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Offline jjoshua

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Re: SD1000 Aperture Settings
« Reply #5 on: 19 / February / 2008, 13:17:36 »
Neat.  So it looks like there are 2 simulated f stops.

And, changing the f stop would not have any effect on the DOF.

Thanks Allbest!
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Offline ixus

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Re: SD1000 Aperture Settings
« Reply #6 on: 19 / February / 2008, 17:26:28 »
ND filter... who knew. So that's the clicking sound I hear when I point the camera to a bright light source. Thanks for the info and future ND capabillity Allbest.

The ND filter is not good though. It means the camera has effectively 1 f stop, f/2.8. Which is going to mean low DOF and low picture quality (optimal picture quality is usually achieved at mid f stops).
« Last Edit: 19 / February / 2008, 17:29:02 by ixus »
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Offline ixus

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Re: SD1000 Aperture Settings
« Reply #7 on: 19 / February / 2008, 19:08:51 »
Just compiled and ran r305/build35. NICE WORK.

ND filter works perfectly! Histogram EV display is very nice!
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Offline Allbest

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Re: SD1000 Aperture Settings
« Reply #8 on: 20 / February / 2008, 04:40:10 »
Quote from: ixus on 19 / February / 2008, 17:26:28
ND filter... who knew. The ND filter is not good though. It means the camera has effectively 1 f stop, f/2.8. Which is going to mean low DOF and low picture quality (optimal picture quality is usually achieved at mid f stops).
Unfortunately all facts say for it... May be it is a pay for small size of objective
Thanks
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Offline Allbest

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Re: SD1000 Aperture Settings
« Reply #9 on: 20 / February / 2008, 06:40:30 »
HOT bug fix for ixus70_sd1000 (displaying information about ND-filter state)
Please reload version: Index of /chdk/
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