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Helping Out Sister's EOS M3 & EF-S Lens Mount Issue

Started Sep 1, 2017 | Questions thread
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fir_nev
fir_nev New Member • Posts: 4
Helping Out Sister's EOS M3 & EF-S Lens Mount Issue

Hi guys.

I have been a frequent visitor of DPREVIEW but this is my first post on behalf of my younger sister.

She bought CANON EOS M3 without much research. Then, when she wanted to try out a telephoto lens, she bought the following:

  • K&F Concept Lens Mount adapter: EOS EF to Canon EOS M EF-M 
  • EF-S 55-250mm f/4-5.6 IS STM

The thing is, she could not get the auto-focus function to work. Also, she cannot take any pictures with the mounted lens on.

I managed to help update the camera's firmware to v 1.2.0. I also assisted to download for her the lens' firmware (v 1.0.3) onto the SD card's root folder but there is no option to update the lens.

From my short description, do you guys think that the third-party mount adapter could be root cause that my sister not able to take any picture? Our other sister and I thought so. I have advised her to rent a Canon mount to check if the body can communicate with the lens.

Any advise is greatly appreciated.

 fir_nev's gear list:fir_nev's gear list
Canon EOS Rebel T4i Canon EF-S 18-135mm F3.5-5.6 IS STM Canon EF-S 18-55mm f/3.5-5.6 IS STM
ANSWER:
Canon EF-S 55-250mm f/4-5.6 IS STM Canon EOS M3
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