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Powershot SX620 HS CHDK

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Offline jdga

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Re: Powershot SX620 HS CHDK
« Reply #120 on: 11 / January / 2022, 13:26:34 »
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 @Caefix:Thanks for showing me how I can check if a camera supports aperture priority with CHDK

@waterwingz: Even if a camera with the original firmware has the option of aperture priority, it may happen that when installing CHDK the option "Override Aperture" is not in the menu. I think this is the case of my previous PowerShot S110 camera.

https://www.dpreview.com/products/canon/compacts/canon_s110/specifications
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Offline waterwingz

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Re: Powershot SX620 HS CHDK
« Reply #121 on: 11 / January / 2022, 13:41:00 »
Quote from: jdga on 11 / January / 2022, 13:26:34
even if a camera with the original firmware has the option of aperture priority, it may happen that when installing CHDK the option "Override Aperture" is not in the menu. I think this is the case of my previous PowerShot S110 camera.
CHDK for the S110 supports "Override Aperture" (as it does for the S80,S90, S95, and S100).

EDIT :  and clearly my previous explanation about Maximum Aperture specifications isn't sufficient when the vendors' camera spec bizarrely omits that it has an actual adjustable aperture
« Last Edit: 11 / January / 2022, 14:14:01 by waterwingz »
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Ported :   A1200    SD940   G10    Powershot N    G16
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Offline reyalp

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Re: Powershot SX620 HS CHDK
« Reply #122 on: 11 / January / 2022, 14:32:06 »
Quote from: jdga on 11 / January / 2022, 13:26:34
@waterwingz: Even if a camera with the original firmware has the option of aperture priority, it may happen that when installing CHDK the option "Override Aperture" is not in the menu. I think this is the case of my previous PowerShot S110 camera.
If a camera physically has an adjustable aperture, but does not show aperture override options in the CHDK menu, this is a bug in the port which should be reported and fixed. This is a property of the CHDK build, not a problem with installation.

This has certainly happened in the past, but IMO most if not all current ports in the official autobuilds are correct, since we can generally tell which hardware is present from the firmware (discussed in https://chdk.setepontos.com/index.php?topic=13228.msg137629#msg137629)

The SX620 has the ND related tasks and not the iris ones, so is almost certainly correctly defined as an ND only cam.

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Offline dizzy314

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Re: Powershot SX620 HS CHDK
« Reply #123 on: 02 / February / 2022, 06:20:06 »
My camera has firmware 1.00A and I can't update to 1.00B or 1.00C because Canon doesn't release any firmware for this model.

I have a firmware dump which I can share if you send me instructions. Any chance to add support for this version?
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Offline Caefix

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Re: Powershot SX620 HS CHDK
« Reply #124 on: 02 / February / 2022, 09:59:28 »
Quote from: dizzy314 on 02 / February / 2022, 06:20:06
I have a firmware dump which I can share if you send me instructions.
https://ufile.io/  :haha

There is a little chance, that 100b could work, else ...
Edit: ... pull battery, unzip correct build to SD, ...  :)
Quote
Any chance to add support for this version?  :-[
;) ... Next but one step ...  Prepare Your SD Card
« Last Edit: 03 / February / 2022, 11:38:40 by Caefix »
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Offline dizzy314

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Re: Powershot SX620 HS CHDK
« Reply #125 on: 02 / February / 2022, 10:06:26 »
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Offline philmoz

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Re: Powershot SX620 HS CHDK
« Reply #126 on: 02 / February / 2022, 17:02:23 »
Quote from: dizzy314 on 02 / February / 2022, 06:20:06
My camera has firmware 1.00A and I can't update to 1.00B or 1.00C because Canon doesn't release any firmware for this model.

I have a firmware dump which I can share if you send me instructions. Any chance to add support for this version?


Test build attached based on current 1.6 code base.
I don't have this camera so this is untested; but most of the work is handled by code-gen. I have updated some stubs values after comparing to the 1.00b version.

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CHDK ports:
  sx30is (1.00c, 1.00h, 1.00l, 1.00n & 1.00p)
  g12 (1.00c, 1.00e, 1.00f & 1.00g)
  sx130is (1.01d & 1.01f)
  ixus310hs (1.00a & 1.01a)
  sx40hs (1.00d, 1.00g & 1.00i)
  g1x (1.00e, 1.00f & 1.00g)
  g5x (1.00c, 1.01a, 1.01b)
  g7x2 (1.01a, 1.01b, 1.10b)
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Offline fe50

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Re: Powershot SX620 HS CHDK
« Reply #127 on: 20 / March / 2022, 03:22:09 »
Since the original link is expired - could someone share the dump again, to add it to the dumps repository...
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Offline blackhole

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Re: Powershot SX620 HS CHDK
« Reply #128 on: 20 / March / 2022, 04:25:00 »
Quote from: fe50 on 20 / March / 2022, 03:22:09
Since the original link is expired - could someone share the dump again, to add it to the dumps repository...
https://drive.google.com/drive/folders/1aRiK8dASnqIVFe0AL-5BXcYvWB_P8hYg?usp=sharing
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Offline fe50

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Re: Powershot SX620 HS CHDK
« Reply #129 on: 20 / March / 2022, 04:54:20 »
Quote from: fe50 on 20 / March / 2022, 04:51:25
@philmoz & @blackhole - Thanks for the links !

Added the
  • SX620 1.00A
full 16MB dump by dizzy314 from this forum post to the CHDK P&S FW dumps repository.
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