EF-Lenses on Compact Camera?
Re: USB webcam for adapted lenses
ProfHankD wrote:
Entropy512 wrote:
ProfHankD wrote:
inohuri wrote:
I usually encourage people with their projects. Not for this.
The catch with what you're trying to do is that most compact cameras require electronic feedback from the lens module and EF lenses don't do squat without electronic control that uses a different protocol (e.g., no aperture control). So, you have two BIG problems. You might be able to get your compact to work with a MANUAL lens by keeping the original lens module connected electrically and manually adjusting your manual lens, but it's an awkward kludge at best.
... If you want small sensor with big sensor lenses try Pentax Q with adapters.
I'd agree... unless you don't mind it being a webcam. Lots of webcams have very dumb lens interfaces (i.e., completely mechanical without electronic feedback), so it's easy to interface MANUAL lenses to a webcam. For example, here's a 3D-printed Canon FL/FD/FDn mount I made for a USB webcam (Digi-Eyepiece) intended to be used with a telescope:
Just to be clear, it's the black part that is 3D printed. It mates with the telescope tube mount on the sensor side and provides the Canon FL/FD/FDn mount on the lens side. It also has a standard 1/4-20 threaded tripod mount for the whole rig, which is how it is supported by a mini tripod in the photos. Total cost of making the adapter was probably about $0.25.
Come to think of it, I don't think I ever got around to posting this design on Thingiverse... perhaps I should? Don't know how available the telescope webcams are now because this was done about four years ago. Now I think you might be better off getting one of those $35 C-mount 5MP industrial webcams I keep seeing on eBay and 3D printing a Canon FL/FD/FDn adapter to C mount.
There are quite a few projects on Thingiverse where people have replaced Logitech C920 housings with one that facilitates a C-mount lens.
As others have mentioned, Canon lenses are not suitable for this unless you've got significant electronics experience. It is possible to control Canon lenses without a body, but requires knowledge of microcontroller programming - https://pickandplace.wordpress.com/2011/10/05/canon-ef-s-protocol-and-electronic-follow-focus/ is one of the better resources I've found in this regard.
Wrong type of Canon lenses. EF and EF-S are electronic control, FL, FD, and FDn are fully manual -- and that's what the above uses. I also can adapt most other manual SLR lens mounts to Canon FL/FD/FDn, so lenses with various mounts can be used. BTW, if I were doing this today, I'd probably build a Leica M mount; it's an even more universal acceptor.
The OP seemed interested in using EF/EF-S lenses. You're right - older pre-EF lenses are much easier to use in cases like this - using EF/EF-S lenses requires a lot of extra work (you wind up with a potentially much more powerful system, but, again - at a lot of extra work that is probably beyond the OP's skillset given the questions that were asked.)
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Sony a6000
Pentax K-5
Pentax K-01
Sony a6300
Canon EF 85mm F1.8 USM
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