Mark B.

I'm using the Viltrox adapter with my R6. No problems with the Canon EF 85mm f/1.8, 50mm f/1.8, or Canon 100-400 f/4-5.6. Haven't used it with any 3rd party lenses as of yet. BTW, I'm on the B&H ...

Gawd no, I absolutely would not save files on SD cards.  For one they aren't meant to be used for long-term storage.  For another, you should be saving your photos to a proper hard drive and then ...

But they are horribly inconvenient to use for backup as well as recovery, and cost per GB is quite high as well.

They will be cropped on the RP, so will be down to 10mp instead of the full 26 mp.

I didn't say it wasn't.   Based on the cameras being considered and what was written, seems like ergonomics are the priority.  Let's see what the OP comes back with.

The OP has not posted anything since.

The OP didn't mention anything about bulk reduction, but did mention ergonomics (well actually it was "egomaniacs" but I know it wasn't a post about narcissists).  The 2 cams mentioned are very ...

I don't have enough knowledge about fake batteries to know the answer, but a battery is the one thing I would never buy used.  You just don't know how long it's been used for and how many recharge ...

I wouldn't attach anything heavier than an external shoe-mount flash to the hotshoe.  Anything else is a repair bill.

Obviously only the 50 can be adapted to the RP w/o using crop mode.  All 3 can be adapted to the M.  So, you'll want to get a lens with the RP as well unless you don't mind only getting only 10 ...

McD's certainly has the quantity & price on their side.  Quality not so much.

I figured as much, otherwise Canon would have made an adapter available long ago.

After 15 years?  I wonder.

Who is "they"?

When film reigned, was it common to include the negatives with the wedding package?

Then that answers your question.  You would need to fabricate a physical mount just to mate it to the camera.  But unless you also know how to pass the electrical communication, there will be no ...

Is there even an adapter to do that?

Quantity.  Not quality.

I was fortunate that I could keep my 7D II and still get the R6.  I couldn't have swung the R5 unless I sold both my 7D II and 80D, and I didn't want to be left w/o a 2nd or backup body.  Other ...

That doesn't seem right about the OEM battery. Did you buy this camera used or refurbished? If it was a new purchase, and not grey market, I'd go back to the retailer if still within the return ...