1) conversion kit from our auction allows you to convert Canon FD 17mm f/4 lens (in this case just nFD version, not 'breech lock' version - for a better understanding, check photo of the lens in the auction description) to Canon EF mount, used in Canon EOS digital and analogue SLR cameras; original FD bayonet of the lens is replaced with EF bayonet from the kit, which allows you to use FD lens in digital and analog SLR cameras with EF mount; we do not guarantee, that after this conversion, it will be possible to use lens with adapters with glass inside (like Metabones Speedbooster adapters) or full frame cameras (like Canon 5D or similar models), as rear lens glass can touch adapter glass or camera mirror;

2) conversion kit requires partially disassemble of the lens and therefore some minimum knowledge of photographic equipment repairs, in particular mechanics of a photographic lens; to mount EF mount, FD bayonet must be dismantled to replace it with EF mount from our kit; in some cases, it will also be necessary to adjust or calibrate of the lens from lens side; for those who do not feel up to doing the conversion themselves, we recommend taking the lens to a professional photographic lens service; our set is very similar to other well known producer kit, so you can check on their www site photos and videos about lens conversion and assess the level of difficulty of such an operation by yourself; we can provide basic user manual of course, how to convert this lens, but we do not guarantee, that these tips will be fully understandable to everyone; we provide full after purchase support for our Clients, but you need to understand, that sometimes there can be even 48h or more delays in our answers;

3) converting your Canon FD mount to Canon EF mount with our kit, allows you to set the focus to the so-called infinity; our EF mount does not have a corrective glass inside, so there is no question of any loss of optical quality; the mount is made solidly, in accordance with the highest production standards, from PA6 duralumin, used, among others, in aviation; the internal elements of the aperture control are made of polyamide; adaptations of this type do not allow for controlling the auto-focus function or any other control from the camera, because they are "dumb" adaptations (simple metal and plastic elements, without any electronic elements); the aperture and focus are operated manually using rings on the lens; the camera can adjust the exposure time to the aperture set on the lens, but this depends on the SLR model used;

4) usually conversion kits works very well, but you need to understand, that adaptation can sometimes generate some problems, so there's a chance, that 5-10% lenses won't work with our conversion kit, so they would have to be custom converted by us to work; there's no chance to check it, before conversion process or lens mount disassemble, so you have o understand, that it can happen to your lens; we are also not responsible for any damage during conversion of your lens, as if you are not able to do it by yourself, we recommend to take lens and conversion kit to photographic lens service, to make it done by professional technician;

SET INCLUDES:

-aluminum Canon EF mount fitted to particular lens;
-polyamide aperture control element for particular lens;
-brass shim kit  (0.05 mm, 0.10 mm, 0.15 mm);
-plastic rear cap for Canon EF mount;
-set of three additional screws;

Lens shown in the photos is not part of the auction of course, it is included here only as a preview to show how the mount offered in this auction looks like, on converted Canon lens from Canon FD mount to Canon EF mount.