Can I use lens I bought for canon 1100 d with canon mirror less camera?

[MikeSowsun · Accepted solution]

Yes, but you must use an adapter.

Canon EF-M Lens Adapter Kit for Canon EF / EF-S Lenses

 

[MikeSowsun · Accepted solution]

Yes, but you must use an adapter.

Canon EF-M Lens Adapter Kit for Canon EF / EF-S Lenses

 

[TCampbell · Accepted solution]

Yes you can.  As Mike points out, you will need that adapter. 

This is because a lens is designed to be positioned at a specific distance away from the camera's sensor.  On all EOS DSLR bodies (Rebels, mid-range, and pro bodies), the "flange to focal plane" distance is 44mm.  The EOS-M body has a much shorter "flange to focal plane distance" of only 18mm but it's EF-M lenses are designed to work with that shorter distance.  The shorter distance is possible because it's a mirrorless camera -- hence no need to leave enough room for the mirror to swing clear of the lens.

The other lenses are designed for cameras which DO have mirrors... hence they are designed for a longer flange to focal plane distance -- and this is what the adapter does.  It allows the lenses to be mounted at the correct distance so that the image will come to focus correctly.