topic Re: Lenses in EF & RF Lenses

Lenses

PatLP — Thu, 30 Oct 2014 01:39:03 GMT

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?

Re: Lenses

ebiggs1 — Thu, 30 Oct 2014 14:08:58 GMT

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.

Re: Lenses

trulandphoto — Thu, 30 Oct 2014 22:40:01 GMT

@ebiggs1 wrote:
[...]
My personal opinion of Promaster 'anything' is they are crummy. Not worth anything, not money nor time. [...]

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.

Re: Lenses

PatLP — Fri, 31 Oct 2014 00:26:36 GMT

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.

Re: Lenses

ebiggs1 — Fri, 31 Oct 2014 13:30:13 GMT

The "EF" in the name is the key.

Re: Lenses

MikeSowsun — Sat, 22 Nov 2014 15:33:06 GMT

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?

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.