lenses

[bigadg]

hi
just got a 20d a stunning bit of kit but not sure if my lenses are good enough to use on it
18-55
ef 35-801.4 5.6III
ef80-200 1:4.5-5.6II
sigma105 macro 1:2.8
sigma 12-24 1:4.5-5.6 dg hsm
sigma 50-500 1:4-6.3 apo
please be easy on me
stu

[Tomasz Dziechciarz]

Hi I had this lens and for the 1,6 factor sensor in my oppionion: optics it strangly OK but mechanics ........disaster even I tested the USM version (for Japanese market) It is better to go with 17-40 L or at least 17-85.

Tomasz

[Jim Larson]

My advice: Go out and take 500 pictures. Then you will know if your lenses are good enough. You may need a flash unit before better lenses.

Note: Most lenses are fine at F8-F11. Flaws will show up in low light work or wide open when you open the lens wide.

[Belmondo]

My advice: Go out and take 500 pictures. Then you will know if your lenses are good enough. You may need a flash unit before better lenses.

Note: Most lenses are fine at F8-F11. Flaws will show up in low light work or wide open when you open the lens wide.

I don't know about the flash part of Jim's answer, but he's right; see if the lenses live up to your expections. If they do the job, keep them. Any that don't, replace.

The only lens on your list that I have personal experience with is the Sigma 12-24, and it's a joy to use, especially with a 1.6X crop factor. It gets a bit of CA near the edges on my 1D with the 1.3X crop factor, and would probably be unacceptable with a full-frame sensor, but for now, it's a very good lens.

[CyberDyneSystems]

You actually have some very nice Sigma lenses in your kit.

I would DEFINATELY keep the 105mm Macro.. just as sharp as the Canon.. only a little slow in the AF dept...

Definately keep the 12-24mm...

And I would certainly keep the 50-500mm unless you upgrade to a big prime or perhaps a Canon 100-400mm L IS...
But those are three nice lenses...