AF:Support autofocus, recommended to use the manual mode to change the shutter speed directly to control the exposure level 3 different combinations:Can be used alone or in superimposed(13mm,18mm,13+18mm) Macro:Getting closer has the effect of magnifying your subject (making it appear larger in the viewfinder and in your pictures) Structural designing pays great attention to make as comfortable as possible in hand and seems like a part of camera. Compatible with: All Full Frame RF mount mirrorless cameras, such as: EOS R EOS RP R5 R6 Meike MK-RF-AF1 13mm + 18mm Metal AF Full Frame Macro Extension Tube Adapter Ring Kit for for EOS-R series cameras RF Mount Cameras EOS-R EOS-RP