Full Frame Lenses

I have a 20D now but want to get a FF (probably 5D) some day. When buying lenses I want to make sure I buy ones that will work well on FF. I only have one Canon lens, which is an L, so assume that is fine. And the others are Tamron and on Sigma. I stayed away from the DII series, so I assume I should be OK there as well??

Sounds good to me

All Canon EF lenses will work on full frame (ie only ones that won't are EF-S).

The tamron di-II do not work on full frame, nor do Sigma DC.

So you look fine!

here are the labels for cropped sensor, so avoid.
Canon: EF-S
Tamron: Di II (I is ff)
Sigma: DC (DG is ok)
Tokina: DX as in ATX Pro DX (D is ok)

What was said above, but also remember that FF will show faults in many lenses so be careful to read reviews.. Cheap glass that might have cut it on a crop, will definately show its problems in FF especially the 5d with it ginormous resolution

Funny, all this talk about sharpness, how did people live wth the soft corners when shooting 35mm film?

Tee Why wrote in post #2030546
Funny, all this talk about sharpness, how did people live wth the soft corners when shooting 35mm film?

Probably never printed them at larger than 8X10 inches.

As you have a 20D I would not wory about buying lenses for the cropped sensor as they will always work on it in the future. Even if you don't want to keep the 20D as a backup you could still sell the lenses at very little loss, look at it as cheap rent.

I too plan to get a 5D or its succesor within a year, give or take, and don't plan on getting rid of my 2 EF-S lenses as they will still be used into the future. I might think of selling the 10-22 if I end up will a 16-35 for the 5D.

Everyone will have their own views, my thoughts are to buy for the present and deal with the future as it comes.

Tom W wrote in post #2030551
Probably never printed them at larger than 8X10 inches.

Or, better yet 40x60 inches (approximately equivalent to viewing a 5D image at 100% on a computer monitor).

Ah, the silliness of pixel peeping. Warning to all, pixel peeping makes you blind!!!

Just don't get EF-S and your good

Tee Why wrote in post #2030546
Funny, all this talk about sharpness, how did people live wth the soft corners when shooting 35mm film?

Stop down their lenses if they needed to have the corners sharp maybe?
That would also cure light falloff that was recently found out to be a problem , as the 5D became available to people who before only had crop cameras (and obviously also did not do much very serious film shooting before).

Best regards,
Andy

Tee Why wrote in post #2030546
Funny, all this talk about sharpness, how did people live wth the soft corners when shooting 35mm film?

because they didn't have to pixel peep

BryanP wrote in post #2034065
because they didn't have to pixel peep

have to? they couldn't!

Jaetie wrote in post #2034320
have to? they couldn't!

Ah, but they could - sort of
Examining slides with a high mag loupe over a lightbox is the film equivalent of pixel peeping...