EOS R8: Dark pictures with twin flash

[TSB]

Hello all!

I am a keen beginner dental photographer looking to troubleshoot an issue. I am experiencing mostly dark images while taking shots with a mirrorless camera and twin flash set up. This same set up with an APS-C sensor camera takes the same images without an issue.

This is the set up where the issues occur:R8 (mirrorless)750D (APS-C)

EOS R8 (mirrorless)
EF-EOS R adapter
EF 100mm f/2.8L Macro IS USM lens
Meike TTL MK-MT42 ii twin flash (with diffusers)
Owl Bracket

When taking the pictures, as you can see, only the upper part of the image is visible and everything else is too dark.

HOWEVER, when I use exactly the same set up with an EOS 750D (APS-C sensor), the picture comes out completely fine.

While taking the pictures, both camera bodies have the same settings:

Manual Exposure Mode
Shutter Speed 1/200
F22
ISO 100

As you can see, when taking the picture using the R8, the images hardly appear. I have tried messing around with the shutter speed and iso but they still come out the same.

BUT when i take the pictures with the 750D, i can see the pictures at least.

I would truly appreciate any guidance and help!

[fisherman10]

Hi TSB, have you found a solution to your issue?

I am currently using Nikon D7000 with the exact same Meike MK-MT24 set which is made up of MK-GT620 trigger and MK-R200 flashes.

I was looking to change to the Canon R8 too as it is cheaper than the R6ii cousin. And I also thought of just buying a MK-GT620 trigger for Canon system and then I can use it along with my existing MK-R200 flashes.

While researching on Meike's website, I found that they mention it is incompatible with Canon R8. Most likely due to R8 using a Electronic First Curtain Shutter (EFCS) instead of a standard mechanical shutter.

https://meikeglobal.com/collections/flash/products/macro-twin-lite-flash-for-sony-photographer-expos...

What that said, have you manage to test out the Canon R8 with wireless Godox system? I saw you tested the Godox mf-r76 but this is a wired system.

Was wondering if the Godox trigger works nicely? Then can use it with their MF12 wireless flashes.

They have many triggers which are:
1) X1
2) X2
3) Xpro
4) XPro II
5) X3
6) X3Pro
7) XR

[SignifDigits]

I am sorry to hear you are having issues with your R8 and your flash.  Thanks for sharing your issue with us.  Can you please share your firmware version and your flash settings (manual for this is at https://cam.start.canon/en/C013/manual/html/UG-04_Shooting-1_0180.html) ?

[jrhoffman75]

This is a two year old thread, so you might not get a response from the OP.

You should start your own thread.

[SignifDigits]

Sorry, John.  I saw it pop up at the top due to fisherman10 

making a comment and didn't notice that - my bad.  I'll look more closely next time.