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Sigma 170-500mm lens or a 2x converter on my Canon 90-300mm

redstag 12 100 15 United Kingdom
1 Jul 2007 10:04AM
I am considering buying a new long lens but I'm not sure if my money would be better spent on a 2x converter. I have very little experience of converters and their effect on quality, so any pointers would be gratefully received.
I am considering the Sigma 170-500mm lens, again anyone got one? Any views.
They will be going on my EOS 300D.

Thanks for the help.

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ZenTog 16 7.9k 1 England
1 Jul 2007 10:08AM
the 2x convertor doesnt work very well on any of the normal canon range and thats the L convertor, which often doesnt fit the siggie zooms
it slows or stops auto focus completly , it degrades image quality as well.
if you need a big lens the only way to do it is buy a big lens, the 1.4 convertor works fairly well accross the range with out degrading image quality that much.
the sgima 50-500 is a lens that has a following by people who can afford the big canon primes, have you thought about one of the cheaper cnaon primes and adding a 1.4 convertor when the light is good enough
justin c 14 4.9k 36 England
1 Jul 2007 10:23AM

Quote:I am considering buying a new long lens but I'm not sure if my money would be better spent on a 2x converter

A dedicated long lens will always be a much,much better option than a 2X convertor,particularly if planning to use it on a zoom lens,which is far from ideal.

Disadvantages of course are much greater expense and heavier weight.

strawman 14 22.1k 16 United Kingdom
1 Jul 2007 2:55PM
I have the sigma lens you mention. It works quite well, but I find you need to tripod mount it for decent results at the long end, plus using a remote shutter release also helps . focusing is critical and I often manual focus it at the long end for wildlife. Its focusing tends to be slow so manual focus is best.

Far better than a 2x converter.
dickiedriver 11 212 United Kingdom
1 Jul 2007 3:03PM
I agree with strawman I use this lens on a nikon d80 and almost always use manual focus when doing wildlife, but if the light is good then the autofocus works well enough.

redstag 12 100 15 United Kingdom
2 Jul 2007 9:52PM
Thanks all, I've now purchased the lens, a bit of a tip, my local Jessops had it in store, but it was very expensive. So shopped around a bit, Jacobs had it for 50 less, but alas no stock, went back to Jessops, yes they price match but only if the other store has stock (d'oh). Why not try online the assistant suggested, so armed with a discount code retrieved from the internet (Sale20 if you are interested) I got the lens for the lower internet price with a further promotional 20 off!!!! Bargain.
Now all I need is some talent a decent subject to shoot! LOL
Thanks for all the advice.
strawman 14 22.1k 16 United Kingdom
2 Jul 2007 10:07PM
Good luck and enjoy yourself.

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