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🔗 Unlock vintage glass magic on your Canon RF — manual mastery meets modern mirrorless!
The Hersmay M42-EOSR adapter is a precision-engineered, full-metal mount that lets you use classic M42 screw-mount lenses on Canon EOS RF full-frame mirrorless cameras. It ensures a perfect, wobble-free fit and maintains infinity focus, supporting lenses with floating elements. Designed for manual aperture and focus control, it empowers photographers to blend vintage optics with cutting-edge camera bodies for unique creative expression.
| ASIN | B08CKR8HJ7 |
| Best Sellers Rank | #188 in Camera Lens Adapters & Converters |
| Customer Reviews | 4.2 4.2 out of 5 stars (92) |
| Date First Available | July 8, 2020 |
| Item Weight | 3.52 ounces |
| Manufacturer | Hersmay |
| Package Dimensions | 2.99 x 2.68 x 1.34 inches |
M**O
Thumbs up
It works!
M**N
Perfect fit
Nice no nonsense adapter for M42 screw mount lenses to Canon. Great fit, nicely built.
B**Y
Doesn't Fit
This adapter is awful. It doesn't fit my vintage M42 lens because it only screws on a little less than halfway. Currently my lens is using a M42 to EOS adapter that fits just fine.
R**R
woks great
This item works great. I have however with some of my extension tubes issues. I am not certain if the extension tubes have the issue or this adapter. In any case I bought lots of extension tubes 30mm, 20mm, 10mm, 15mm, 12mm, 7mm, 3mm, ... and so on that work between themselves ok, However the 20mm and 30mm do not fit on the base, luckily the 10mm did perfectly fit so I could through a combination in different order create my 50mm I needed. This allows me to put then the extension on it so I can mount my microscope lens to the RF mount via the m42 rings. So overall I am very happy. Previously I had: RF-EOS <> EOS to M42 <> then all the different rings to get the right length, so I replaced with this the EOS adapter and the EOS to m42 adapter. I will now keep this together and have now a "dedicated" solution. Originally I 3-d print the adapter from RF to RMS, but as it turned out this did not work at all as my 3-d printer did not result in a mountable adapter to RF. Instead of reprinting one to EOS, I decided to just go with this ring and the extension tubes. I am very satisfied although I gave it not 5 stars.
D**C
No problem using this adapter. I mounted 50mm 1.4 canon FD to my R5 and everything works normal.
A**O
L'adattatore fa il suo dovere. E in metallo e da la sensazione di essere sufficientemente robusto. Viene fornita in dotazione la chiavetta per svitare le tre vitine di serraggio ed allineare la filettatura con l'obiettivo qualora fosse necessario. Ovviamente essendo privo di contatti elettrici la messa a fuoco e la regolazione del diaframma sono sempre manuali. Bisogna ricordarsi di abilitare la funzione di scatto senza obiettivo sulla macchina. Ho scattato solo un paio di foto di prova ma mi sembra un buon prodotto.
R**L
Fits nice with a canon mirrorless m11 giving you more options for different lenses
P**P
Great little product. Light. After changing the settings on my Canon R5 everything worked fine with my moms old Pentax Super Takumar 55 f2. Sharp! The adapter locks in place on both ends. Feels good. Only thing that was weird was that I ordered this and an FD adapter at the same time but the order was split - with the FD being a couple of weeks slower. Price paid: 17 euro Delivered: Inside foam plastic bag, inside small cardboard box, inside plastic bag.
D**E
Materiale di buona qualità permette un corretto innesto degli obiettivi. Fa il suo dovere ad un prezzo irrisorio! Consigliato!
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