There you go. And it happens to me in Av. Don't know about the other modes.
The next question is why this causes an Assert in capt_seq.c ? The Canon menu won't allow an ISO setting lower than 125 so I'm guessing the Canon code asserts if the flash is enabled and anything tries to use a value lower than that. But that's just my working theory right now.
Crashing when ISO override is set below factory values and flash enabled is something we've seen before: See CAM_MIN_ISO_OVERRIDE in camera.h and results for it in the forum. You can use isoinc.lua to see what range of ISO overrides are effective: https://chdk.setepontos.com/index.php?topic=12165.msg127110#msg127110 If it's not effective significantly below the stock value, setting the limit is the obvious solution. If there is useful override that works when the flash is not enabled, then we either have to accept the crash, or come up with some special case.
But how is this connected to flash?
What in CHDK tries to select ISO below 125, if min. A-ISO is 125, and we don't use ISO override at all?
Is there any code in CHDK related to flash power (I'm not seeing any flash options in CHDK menus)?
But is there anything in CHDK which concerns the relationship between ISO and flash power?
So, what is trying to override that ISO with lower than factory minimum?
Yes, but mine is set to min. 125. If Canon's firmware checks min ISO how could it detect anything below 125?
I don't think going below ISO 125 is beneficial on SD4000 in any way.
Quote from: Robert1975 on 01 / September / 2017, 17:43:05I don't think going below ISO 125 is beneficial on SD4000 in any way.I tested from ISO100 to ISO200 using reyalp's isoinc.lua script.Below ISO125, nothing changes. Once the script reaches the equivalent of ISO125 the Canon image histogram starts shifting. So using values below ISO125 with CHDK does not actually change the image from what you get using ISO125.I've updated today's patch file to include a CAM_MIN_ISO_OVERRIDE of 126 (per my previous post).
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