Hi Guys and Gals, can I ask a question that has probably been asked before but one that I have been unable to fathom out the answer to. I have done a few ‘searches’, so perhaps I’m using the wrong ‘key’ words.
Anyhoo, until recently I was going to buy the 100-400mm Canon, but a Trek Madone (Road Racing bicycle) at massive discount came my way and now I can’t afford one. My question (see I got to it eventually) is if I buy a x2 converter for my Sigma 70-200mm lens, would I be better off going for the Sigma version or the Canon version? and do I lose AF with both converters? I’m happy to pay the extra for the Canon version if it gives better IQ. Or if the IQ of both is only average, then would I be better saving up for a Bigma or even waiting till I can afford the 100-400mm Canon again (assuming the potential new long Canon zoom hasn’t come out by then) I have a Canon 350D Body. I realise the Canon IS is a real boon, but I can just about live without it I think and this x2 measure is only meant as a stop gap one.
I already have a Jessops x2 converter and it is horrible, it make the images look like I’ve applied a magnifying glass to the image and rubbed butter on my eyeballs. Oh and one other question about X 2s, if I was to put it on my 17-55mm lens would it be any use as a long portrait lens or would I lose too many stops to be make it worthwhile.
Sorry for all the questions but I’m a technical incompetent.:o
On further investigation, I see that the Canon is ot compatible with the Sigma lens, so perhaps my question is a waste of time. so I will re-examine the posts on the Sigma lens with just the Sigma x2. Thanks. Oh and if anyone does know if a Sigma x2 would fit on the 17-55 f2.8 and whether it would be worth doing so I’d still be grateful. Many thanks Amanda.