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Access external speedlite AF assist beam

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Access external speedlite AF assist beam
« on: 17 / January / 2021, 05:21:03 »
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Hi,

First, thanks for the amazing development job. I use a powershot G16 and CHDK is a great companion!

I have a question regarding the possibility to access the AF assist beam of my Canon Speedlite 430EX II.

Whatever I tested I could only get the built-in assist beam from the g16 to work.
Trying to get information on the web I found 1 post saying that it is not possible: https://www.flickr.com/groups/2128051@N22/discuss/72157632418057330/

Could by any chance something be done with CHDK for that purpose? That would be a great functionnality!


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Offline c_joerg

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Re: Access external speedlite AF assist beam
« Reply #1 on: 17 / January / 2021, 06:35:41 »
Whatever I tested I could only get the built-in assist beam from the g16 to work.

Even if you could do that with CHDK, it won't do you any help.
There is a reason why Canon switches off the mirrorless ones. The light from AF assist beam only works with DSLRs with phase focus, because it's infrared.
You can't focus with contrast focus.
M100 100a, M3 101a, G9x II (1.00c), 2*G1x (101a,100e), S110 (103a), SX50 (100c), SX230 (101a), S45,
Flickr https://www.flickr.com/photos/136329431@N06/albums
YouTube https://www.youtube.com/channel/UCrTH0tHy9OYTVDzWIvXEMlw/videos?shelf_id=0&view=0&sort=dd

Re: Access external speedlite AF assist beam
« Reply #2 on: 17 / January / 2021, 12:27:39 »
Thanks c_joerg for the explanation!

 

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