jaymatt Loc: Alexandria, Indiana

Can anyone recommend a lens adaptor that will allow me to use a number of Pentax mount lenses (SLR) on my Canon DSLR?

imagemeister Loc: mid east Florida

M42 screw - or- K mount bayonet ??

amfoto1 Loc: San Jose, Calif. USA

There are numerous adapters offered for both M42 (screw mount) and P/K (bayonet mount, such as the "M" and "A" series) Pentax lenses. Look on eBay, Amazon and at the big online retailer websites. They all have them.

You'll find both basic and "chipped" adapters.

The "chip" allows your camera's AF Confirmation to function, which can be helpful since modern DSLRs don't have much in the way of manual focus assistance features.

You will need to use the lens fully manually... both focusing it and setting the aperture by the ring on the lens. Your camera can be used in the M (manual) mode, or in Av (aperture value auto exposure) mode. With the adapted lens, it cannot be used in Tv, P, CA, A+ or any of the even more highly automated "scene" modes found on many Canon DSLRs.

As you manually stop the lens down, your viewfinder will also dim down along with it, making manual focus even more difficult. Depending upon how bright the scene you are shooting, AF confirmation will work until you stop down to f5.6 or f8, typically. Beyond that, it will start to struggle pretty badly, eventually giving up entirely.

This was shot with a vintage, manual focus Tamron SP 90mm macro lens that I've adapted for use on Canon...


$20 for the lens, $40 for the adapter (incl. shipping from China, via eBay). $60 total for a fine macro lens! Not fast to work with, though. To get the above (at f11), I probably took about 75 shots, only a few of which are "keepers". Of course, working with non-macro and stationary subjects is a lot easier.

More info about adapting various vintage lenses for use on Canon can be found here...

http://www.bobatkins.com/photography/eosfaq/manual_focus_EOS.html

jaymatt Loc: Alexandria, Indiana

K mount

jaymatt Loc: Alexandria, Indiana

Thanks!

imagemeister Loc: mid east Florida

The quality and precision of the machining ( fit and finish) is what will separate most of these adapters. Generally, you get what you pay for - but not always .....prices range from $15 - $150 !

johnmowry Loc: Northern Indiana, USA

I got a Fotodiox to adapt my old Olympus OM lenses (with no sales value) to a Canon EOS mount. It works fine as a manual option, and much cheaper than Novoflex(?).
John

sirlensalot Loc: Arizona

Cheaper adapters tend to fit loosely. Tried a few, with and without chip. Not much difference. Usable, not impressive. Used them for Pentax K mount to Canon. Only used on Crop body.
Quality and price vary a lot.

agillot

FOTODIOX , under $ 50 , works well .

graybeard

I can make a recommendation. I bought an M42/EOS lens adapter that allows you to mount screw mount lenses to a Canon camera. It has the contacts that allow it to interface somewhat with the camera. Manual focus, manual setting of SS and ISO, but still using those old lenses you love so much. The cost? $5.50! IE. five and a half bucks. with free shipping on a slow boat from China, ebay user wea.jo. It works! I just bought one for a test, but now I will buy more so I will have an adapter permanent on each lens.