How can I tell what lens mounts these lenses are?

[fendip]

Hello!

I'm a camera newbie just getting into both film and digital photography. My uncle has recently gifted me a bunch of lenses that he had but he never knew what cameras they belonged to. He basically said, "here you could probably figure out what kind of camera these are for" and gave them to me. I have went to a few local camera places but they didn't really know what to tell me, sooooo I was wondering if someone here could help me?
here are the lenses

If you can in anyway help I really do appreciate it!

 

[ac12]

Don't skip the obvious.
What is printed on the front of the lens?
The lens brand.

 

[480sparky]

Um, it says "© 1992 MINOLTA" right on it.

 

[fendip]

Right, Here's some pictures!

The first lens is a TAMRON AF 28-200mm 1:3.8-5.6

The second lens has no brand, AF70-210 is all it says.

The third lens is a SIGMA DC 50-200mm 1:4-5.6 HSM

The fourth and last lens is a SIGMA DG 70-300mm 1:4-5.6

 

[fendip]

Um, it says "© 1992 MINOLTA" right on it.

LMAO you're right I can't believe I didn't see that

 

[zombiesniper]

These all appear to be Minolta A mount lenses.
The A mount came in both a 5 and 8 pin variety.

Here's a link to a similar Sigma 70-300.