Lenses

[PatLP]

A friend of mine gave me a Canon EOS Rt with a promaster 100-400mm AF F4.5-6.7MC lens and a Canon EF 35-80mm 1:4-5.6 lens. Will these lenses work with my canon Rebel T3i?

[ebiggs1]

Wow, a EOS RT, that is a blast from the past.  It is a film camera you know, not a DSLR.  It's mirror doesn't move when it takes a picture.  It uses EF lenses, however, so if a lens fit it, it will bolt to a currect (T3i) DSLR camera.

The Canon EF 35-80mm 1:4-5.6 lens is on it's 3rd or 4th reinvention.  I am guessing you have the original if it was for the RT.

But it should work on your T3i.  They are OK so-so lenses.

My personal opinion of Promaster 'anything' is they are crummy.  Not worth anything, not money nor time.  That said with the proper version, which I would guess you have, it too will hook up to your T3i.  Some folks sware by them and some folks sware at them.  They are not for me. 

[trulandphoto]

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@ebiggs1 wrote:

[...]

My personal opinion of Promaster 'anything' is they are crummy.  Not worth anything, not money nor time.  [...]

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While I'm sure you're correct regarding Promaster lenses, I have a set of Promaster Digital Extension Tubes that are well built and work flawlessly.

[PatLP]

ebiggs1, the EOS RT came out in 1989. I love collecting old cameras and lenses. This one is in perfect condition so I'm excited. I have multiple lenses for my T3i so I was thinking if these old lenses would work with my T3i, I would add them to my collection.

[ebiggs1]

The "EF" in the name is the key.  

[MikeSowsun]

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PatLP wrote:
A friend of mine gave me a Canon EOS Rt with a promaster 100-400mm AF F4.5-6.7MC lens and a Canon EF 35-80mm 1:4-5.6 lens. Will these lenses work with my canon Rebel T3i?

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Becaue the Promaster 100-400mm is f/6.7 at the long end, it might not auto focus on the T3i. Generally you need f/5.6 or faster for AF.  There is also a good chance the aperture control will cause a camera error if you shoot  stopped down. This is pretty common error with old 3rd party film era AF lenses.