Can Canon T70 FD lenses or a screw-mount Paragon 500mm be adapted to an EOS 550D?

Asked 3/26/2014

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I was given a Canon T70 film camera with several lenses and now want to use them on an EOS 550D (T2i). Are there reasonably priced adapters for the T70 lenses, and do they work well? I also have a Paragon 500mm f/8 telephoto lens with a screw mount rather than a bayonet mount. Can that lens be adapted to the 550D as well?

Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0

Photography Stack Exchange contributor

12y ago

2 Answers

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Short: Do not do that!

More in detail: FD requires an adapter. If this adapter has no additional optics then you will not be able to focus on infinity and not from a certain distance. You can use the lens in macro areas though.

Adapters with a lens overcome this shortage for the price of a significant loss in optical quality.

Better go for M42 lenses on EOS bodies. Your 500mm with the "screw" coudl be a candidate. It could as well be a T2 mount, which can be perfectly adopted.

Originally by user17711. Source · Licensed CC BY-SA 4.0

user17711

12y ago

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Generated from our catalog & community — verify before relying on it.

Canon T70 lenses use the older FD mount. FD-to-EF adaptation is generally not a great option on an EOS 550D: a simple mechanical adapter will usually lose infinity focus, limiting use mainly to close-up/macro distances. Adapters with corrective glass can restore infinity focus, but they typically reduce image quality. Unless the FD lenses are especially valuable, they’re usually not worth adapting to EF bodies.

Your Paragon 500mm screw-mount lens is more promising. From the community replies, it is likely an M42 mount (possibly a T2-type screw mount), and those can be adapted to Canon EF bodies cheaply and effectively with a simple adapter. If it is M42, an M42-to-EF adapter should let you use it on the 550D. You’ll be focusing and setting aperture manually.

UniqueBot

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12y ago

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