A590IS porting...

reyalp

dvip
I'm not sure if this is a bug or what... but when I set the Override ISO value to 65 with value factor of 1, I always get ISO 100 (even in the exif data) and the picture looks brighter than one taken at ISO 80 which the lowest for the A590IS-101b at the same exposure setting.

AFAIK, most (if not all ?) CHDK cameras don't go below ISO 80. Behavior of extreme overrides will vary depending on model. Regular exif info is frequently not reliable, makernote frequently is.

Do overrides in the normal range work ?

dvip

Yes, the overrides work for values in the normal range.

I tested it for iso 65 which is listed on this page for the A590IS:

http://chdk.wikia.com/wiki/CameraFeatures

but as said, when I try iso 65 the picture looks brighter, when it should
look darker. It looks more like iso 100 and it says it is iso 100.

reyalp

Note that canon has "market" ISO (used in the canon display) and "real" ISO. There's some convoluted cruft to deal with this in the Sv override code, I haven't worked out exactly what it is supposed to do, or whether it does it correctly. However, it does appear to do pretty much the same thing for all cameras.

https://chdk.setepontos.com/d/3373/1
might also be of interest.

As for the info on the wiki... it's probably wrong, feel free to correct it if you believe you have more accurate information.

dvip

Thanks for the information, reyalp. It looks like it won't
work for anything lower than iso 80 which is the lowest
setting for the Canon A590IS. It would have been nice
so I could slow the cam a bit for blury water shots...
since there isn't a built-in ND filter.

dvip

@wim/@mngc,
Does your A590IS focus if you press "set/shutter" during video recording?
I wonder if this is a A590IS-1.01b only problem.

Any way to get the distant to subject on the display?

mngc

dvip
@wim/@mngc,
Does your A590IS focus if you press "set/shutter" during video recording?
I wonder if this is a A590IS-1.01b only problem.

Any way to get the distant to subject on the display?

No, the af key not working. The bitrate and quality control in video mode not working too.

I see very interesting topic, from current 863 trunk, see bellow. @dvip can you contact/manage the problem with oldgit or other expert users?

sx200 updates from oldgit in https://chdk.setepontos.com/d/3994/803
* fixes AF scan in video, alt drawing, zebra/histo issues.

OldGit

@mngc
patch for trunk 868, should fix both versions (100e 101b) for AF scan problem.

OldGit

fe50

OldGit
patch for trunk 868, should fix both versions (100e 101b) for AF scan problem.

Thx, added to the trunk (changeset #869).

dvip

@OldGit and @fe50,
I just tested the video AF scan with the set key on the A590IS (101b) and it works great.
Thanks and great work!

dvip

I have noticed that sometimes when pressing the shortcut button to
enter chdk's menu the menu appears and then disappears fast not
giving much time to make a selection. This doesn't happen too often
but I wonder if there is a little bug in the menus system. I correct the
problem by pressing the button again and the making the selection.

Also...
I know that chdk can move icons around with the "OSD layout editor"
but is there a way to move around the "Exposure Level Indicator "
which would be nice to have lower or even horizontal and smaller if
possible. Even just numbers to indicate the stops would give more
space on the LCD monitor. I hope there is a method in DryOS to
change that in the GUI.

reyalp

I have noticed that sometimes when pressing the shortcut button to enter chdk's menu the menu appears and then disappears fast not giving much time to make a selection. This doesn't happen too often but I wonder if there is a little bug in the menus system. I correct the problem by pressing the button again and the making the selection.

This is normal behavior in CHDK. The Canon firmware overwrites the CHDK display when it updates.

For the second one, I'm not clear what indicator you are talking about. If you mean the CHDK histogram, it can be moved in the OSD editor. If you are talking about a canon indicator, then it cannot be moved.

dvip

>This is normal behavior in CHDK. The Canon firmware overwrites
>the CHDK display when it updates.

Ok, I see.
Good to know it isn't a chdk menu refresh bug.

>For the second one, I'm not clear what indicator you are talking
>about. If you mean the CHDK histogram, it can be moved in the
>OSD editor. If you are talking about a canon indicator, then it
>cannot be moved.

Yes, it is the Canon indicator, the one Canon calls Exposure Level
Indicator. It gets in the way when composing pictures and I wish I
could move it or turn it off.

Thanks reyalp.

dvip

In the A590IS when using:
RAW parameters -> Dark Frame Subtraction [On]
Should it affect only the raw file or both raw and jpg?

reyalp

dvip
In the A590IS when using:
RAW parameters -> Dark Frame Subtraction [On]
Should it affect only the raw file or both raw and jpg?

It should affect both

dvip

Ok, that's what I thought.
I have seen dead pixels gone in both jpg/raw.

Will having:

RAW parameters -> Dark Frame Subtraction [On]

affect the image quality? speed?

I have Dark Frame Subtraction [On] all the time
to avoid getting dead pixels in the jpgs too.

reyalp

Dark frame subtraction effectively doubles the exposure time, since it takes the exposure again with the shutter closed. The actual subtraction time should be fairly insignificant.

Quality should generally be better with dark frame subtraction on.

OldGit

@mngc
Try this one.
If this does not crash the camera, you should now have....
Mute Mic in the menu,
Video Quality and the Optical Zoom should work.

Can you let me know how it goes and what problems it gives.

OldGit

dvip

@OldGit,
In my A590IS (101b) it crashes the camera on start in any mode.
Do we need a Ps.fi2 to go with the bin?
Will the new options affect FPS in video?
Thanks for working on the A590IS' video options.
Hopefully, we can get it to work right.

OldGit

@dvip,
this may take some time as I don't have an A590, the code was all in place but was not enabled.
The Diskboot file was for the 101B, sorry I forgot to say that before.

I have checked the function call address for each function used, but I will need to recheck the code against the firmware dump.

If we can get it to work it should allow full control over the video (bitrate and quality modes).

I don't have the keys for this camera handy so I will just build the bootdisk for now.
I'll post another version here if I can find anything that looks to be the cause of the crash.

Thanks for testing
OldGit

OldGit

OK, can someone try this version please.

This version does NOT implement the video compression / optical zoom, or mic mute
but should not crash.

If the camera starts and can record video as normal we may be in with a chance.

this version is for 101 B firmware
OldGit

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