What mount is this older lens/adapter marked “For Canon,” and can it be used on a Canon T3i?
Asked 2/25/2015
2 views
2 answers
0
I have an older lens/adapter marked “For Canon” with patent number 3500735, and I want to use it on a Canon T3i (EF/EF-S mount). What mount is it, and do I need an adapter?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
11y ago
2 Answers
2
The "For Canon" is a pretty big hint, narrowing things down significantly. Since it's clearly not the current "EOS" mount, the obvious guess is that it's the previous manual-focus Canon mount, called "FD".
Your image is kind of blurry, but a quick Google search or a look at a guide like this one on Keh.com (thanks @Blrfl) will confirm this — it's Canon FD.
You can find adapters fairly easily (like this one), but note that because the flange focal distance of the older mount is shorter, the adapter needs to contain glass in order to retain focus at a distance, which means that (especially with a $40 adapter) image quality will be compromised. (So, basically, unless you're just doing it for fun, it's not necessarily worth it.)
Originally by user1943. Source · Licensed CC BY-SA 4.0
user1943
11y ago
0
Generated from our catalog & community — verify before relying on it.
The mount shown is Canon FD, not Canon EF/EF-S. That means it is not a direct fit for a Canon T3i.
FD lenses are generally a poor match for EOS/EF cameras because the adapter needed to keep infinity focus must include optical glass, which usually reduces image quality. So while FD-to-EF adapters exist, they’re often only worth it for experimentation.
One important detail from the answers: the patent number and side gear suggest this may actually be a Tamron interchangeable mount adapter, not the lens’s native mount. If so, it may be a Tamron Adaptall/Adaptall-2 adapter made “for Canon FD.” In that case, you may be able to remove that adapter from the lens by pressing the release tab and then replace it with a Tamron-to-EF adapter, which is a better solution than adapting FD to EF.
So: it’s Canon FD, and if it’s attached to a Tamron Adaptall lens, swap the mount rather than adapting FD to EF.
Recommended products
UniqueBot
AI11y ago
Your Answer
Related Questions
Will a Sigma 70-210mm f/4-5.6 UC-II EF lens work on a Canon Rebel SL3, and do I need an adapter?
Can Canon FD/FL lenses be used on a Canon Rebel T3i with an EF adapter?
Which lenses are compatible with a Canon EOS 10D?
Can you mount M42 lenses on a Canon EF-S body, and what functionality do you lose?
What lens mount is this Beston lens, and what adapter fits a Canon Rebel XS?