Sigma zoom lens

[Badllarma]

Hi Mark so far so good a few issues mainly to do with me

1) Learning when and when not to use the OS defiantly not when resting it on anything. Keep either leaving it on or leaving it off when I should have had it on.

2) Remember to turn zoom lock on when walking around with it stops the lens from extending outward making for an even longer object to smash against anything within 1 m of it. Just remember to take it off before trying to use it

Ok so that's me I've mainly been using it with the x2 converter which makes manual focus hard on anything less than good daylight (you have to manual focus with the converter on). And even with the OS on at 800mm 1/250 is REALLY pushing my luck. Anything less than 1/250 is bobbins as 90% of the images I have taken will testify.

As for shooting without then converter no problems so far. OS lets you get away with murder at 400mm (officially of course all images at 400 mm should be shot on 1/500 of a sec plus) but I've pulled off shots at 1/125 sec today and 1/200 sec with no issues.

There is only one problem I have found and that is, auto focus is good but not lightning quick I was try to capture gun dogs jumping into a pond today at a country fair and even with AI focus set on my 20D I did not get one good image, to be fair I tried my 70-200 f2.8 Sigma afterwards on the same subject and the hit rate was still very poor.

I would like to test a 100-400mm Canon against it but I don't have one so it's any persons guess to see if it's any quicker

I'm at Tatton Park next week photographing the lurcher racing last year I had ago and had to prefocus all the shots with my old Canon 75-300 mm so I may try some tracking and shooting with the lens there and see how i go on.