Looking for a flash solution for the EOS R1 while waiting for a hot shoe adapter

[Photopike]

I have two 600EXII-RT's and an ST-E3-RT Transmitter. I just received my EOS R1 but was unable to get the $39 AD-E1 Multi-Function Shoe Adapter because it is on backorder. Does anyone know of a solution for me to use my speedlites for a shoot I have in three weeks?

[jrhoffman75]

[Commercial link removed per forum guidelines and replaced with screenshot to serve as visual aid.]

[p4pictures]

There is a simple solution, the rubber sealing part around the foot of the Speedlite Transmitter ST-E3-RT and Speedlite 600EX II-RT, simply pulls off. Then you can mount them on the camera and they work fine, just not weather sealed. The rubber part can be refitted quite easily by hand too.

[Photopike]

I looked at all the sites you posted and a few more, thank you for the reply. It seems that these are all Gray Market products (They have the UK CA certification. I'm not a fan of the gray market, but this could be a solution for those who don't care.

[jrhoffman75]

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@Photopike wrote:

I looked at all the sites you posted and a few more, thank you for the reply. It seems that these are all Gray Market products (They have the UK CA certification. I'm not a fan of the gray market, but this could be a solution for those who don't care.

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I never by gray market with anything with moving parts but static products generally work out of the box or don't. Inservice failures are extremely remote so I consider the risk very low for something I require. 

[chrishoesel]

The transmitter with the traditional shoe should fit just fine and fire normally.  The old shoe is forward-compatible electronically and mechanically with the new MFS, (may need to move the weather seal slightly as P4 mentioned) however MFS devices are NOT backwards compatible with old hot shoes either mechanically or electronically.  (They're missing the 5 connector pins on the bottom)  I was able to use my ST-E3-RT with zero issues on my R5C, which has a MFS.

[p4pictures]

Hi Chris,

Thanks for stepping in with some more helpful information. One thing to mention is that the EOS R5C has a special variant of the multifunction accessory shoe, it's a video accessory shoe. This means it supports video accessories like microphones and XLR input devices when the camera is in video mode, but in stills mode it does not support the Speedlite accessories at all. So while the Speedlite EL-5, Speedlite EL-10 and ST-E10 with multifunction accessory shoe all fit on the EOS R5C none of them will operate with the camera.

This is the specification page from Canon UK, the first footnote specifically mentions the EOS R5C as not supported.

https://www.canon.co.uk/cameras/speedlite-flash-el-5/specifications/ 

For use with compatible cameras with Canon's Multi-Function shoe, a firmware update may be required. Note, not all functions may be supported with all cameras (the EOS R5 C and camcorders with the Multi-Function shoe are not supported).

[chrishoesel]

Yes that's right.  It's one of the things that I was holding out for a long time on to see if a firmware update would enable the MFS in stills mode.  I now have an R5MK2 so I can use my EL-5's on it and the ST-E-10RT transmitter which I owned for a long time before being able to use them as intended.  I was using the ST-E-3RT transmitter to fire them so not a complete loss.

Canon took a long time to publish the disclaimer on this. 🙂

[p4pictures]

The disclaimer I mentioned was included on the specification sheet on the European websites when the Speedlite EL-5 was announced. I recall this as I thought it would work with the EOS R5C, and found the note a bit surprising at the time.