Info on 430EX and M5

Started May 20, 2017 | Discussions
Andy01 Senior Member • Posts: 3,463
Info on 430EX and M5

I recently bought a M5 and thought I would try out the old 430EX on it because it is not listed as a compatible flash.

Slipped it on and took a couple of shots, and it seemed to flash OK. I realised that something was missing though - no red AF assist lamp. Then I wondered if the flash was just firing with full power each time (ETTL not working).

Does anyone know definitively what the issues are with the M5 and original 430EX ?

Is it just the AF lamp, or does not ETTL not work either ? I noticed in the M5 manual that it mentions ETTL II and wondered if this means that the original ETTL is not working at all ?

Any info is appreciated.

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davel33 Senior Member • Posts: 2,014
Re: Info on 430EX and M5

The M5 will NOT fire the on flash focus assist on any flash, it wants to use the on camera for focus assist  I have used the 430EX II with no problem.

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OP Andy01 Senior Member • Posts: 3,463
Re: Info on 430EX and M5

Thanks Dave. Interesting that other flashes, including the 430 EX II doesn't fire the AF lamp.

What seems a bit odd is that the 70D manual says that the 70D is also ETTL-II, and it also shows that the original 430EX is not a compatible flash for the 70D, and yet I have used it several times and it works perfectly (and fires the AF assist lamp).

So, as per manuals, the 70D should be just as incompatible as the M5.

Can anyone confirm what aspects of the original 430EX are not compatible with the M5 (other than the AF lamp) ?

Has anyone tried the M5 with the latest 430 EX III-RT ? Does it fire the flash's AF lamp (once the flash menu command is changed from pre-firing the flash itself to using the AF lamp for focusing) ?

I obviously don't want to have to buy a new flash if I don't need to, and I don't want to buy a flash to get the AF lamp feature (which is far less obtrusive than pre-firing the flash).

Thanks

Colin

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klPhoto New Member • Posts: 8
Re: Info on 430EX and M5

Hi there,

I am new to the M5 since a few days. Used my 430EX so far without issues, IR light not firing set aside.

Cheers,

Klaus

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beagle1 Forum Pro • Posts: 10,770
Re: Info on 430EX and M5

klPhoto wrote:

Hi there,

I am new to the M5 since a few days. Used my 430EX so far without issues, IR light not firing set aside.

Cheers,

Klaus

same here, I use the 430exII and M5

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WeddingTog New Member • Posts: 19
Re: Info on 430EX and M5
1

IR assist doesn't work with any of the Canon mirrorless cameras. It's been mentioned on here that it's the same for all the other manufacturer's too, I guess that image sensors aren't sensitive to IR light, but the separate AF system in SLR cameras are.

I've used a Canon 430 EX III RT on my M5 without any problems (just no IR assist).

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OP Andy01 Senior Member • Posts: 3,463
Re: Info on 430EX and M5

Not sure that is the case - I think I saw the M5 fire an IR assist beam, which appeared to be smaller/weaker than the beam that normally comes from the 430EX flash ?

Thanks for the feedback. I will test some more to check if it does vary the flash's power according to the situation, or if it just smashes out 100% each time it fires.

Interesting that even the latest 430EX iii RT doesn't work on the M5 as it does with every other EOS. Has the 430EX iii RT been changed in the menus to use the IR beam, and not the small pre-flashes (which I believe it does as a default) ?

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WeddingTog New Member • Posts: 19
Re: Info on 430EX and M5

The M5 itself does have AF beam assist, but I'm pretty sure this isn't infra red and is just a very bright red light. It's certainly a lot more intrusive than the dim visible red flash that the 430 EX III RT puts out during AF beam assist when fitted to a DSLR.

If you look at page 172 of the M5 manual (Using an External Flash) it states that the AF-assist beam on an external flash will not fire.

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OP Andy01 Senior Member • Posts: 3,463
Re: Info on 430EX and M5

So it does. I wonder why the camera would not use the flash's much more powerful AF assist beam ? I have always found that my old 430EX works a treat in very low light conditions, and the 70D can focus perfectly in almost total darkness using it ?

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WeddingTog New Member • Posts: 19
Re: Info on 430EX and M5

Give it a try it on your 70D while using live view and I doubt the IR AF beam assist from the flash will operate (it doesn't on my 5D mk iii). The image sensor can only detect red, green and blue light. On a mirrorless camera or a DSLR in live view the image sensor is used for AF, so infra red AF beam assist can't do anything to help.

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OP Andy01 Senior Member • Posts: 3,463
Re: Info on 430EX and M5

I did not know that. I hardly ever use my 70D in live view because I prefer the VF - one of the main reasons I bought the M5 and am selling my M3.

I will do some experimenting - thanks.

Colin

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davel33 Senior Member • Posts: 2,014
Re: Info on 430EX and M5

There is ONE flash that does works with DPAF for focus assist and I just tried it on my 7DII in LV and on my M5 which only has DPAF, the Canon 320EX. It has a LED on the front for a video light and its controlled by the camera, auto on/off as needed. Anyway the 7DII in LV will use the 320EX video light when needed for focus. Its the same for the M5 which has a red Led on the front of the body for focus assist, but it will use the 320EX when its on. So for sure its by design.  The M5 will use the Video LED on the 320EX for both video and stills focus assist.

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OP Andy01 Senior Member • Posts: 3,463
Re: Info on 430EX and M5

Thanks Dave. I will look into it.

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