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<blockquote data-quote="Shy Talk" data-source="post: 628969" data-attributes="member: 18388">I see. That's a pain-in-the-ass for sure.i thought you said it did ok for statics?You know shooting one of these big lenses is a lot like shooting a rifle. You need to zero-in the sights.If you cannot get sharp shots of static subjects when shooting carefully, try to fix it with the fine tune. If that don't work, get rid of the thing quickly. If it was new, swop it for another- if it was used, now you know why it was up for sale!I've read online that it's not unusual for these to front or back focus.i think the 50-500 OS is the best for Air shows. If Sigma make a 50-600 OS, that weighs the same I'd get one though.ive been thinking of getting a 150-600 sport, and I might still because its reputably sharper than my lens. The reason I've not bought it is because what I've got is what works for me.the newer lens is a lot heavier, and I use the 50end out of laziness at Air shows.the benefit would just be that extra 100mm, and I bet I'd struggle like you have, with the damn thing!</blockquote>

[QUOTE="Shy Talk, post: 628969, member: 18388"] I see. That's a pain-in-the-ass for sure. i thought you said it did ok for statics? You know shooting one of these big lenses is a lot like shooting a rifle. You need to zero-in the sights. If you cannot get sharp shots of static subjects when shooting carefully, try to fix it with the fine tune. If that don't work, get rid of the thing quickly. If it was new, swop it for another- if it was used, now you know why it was up for sale! I've read online that it's not unusual for these to front or back focus. i think the 50-500 OS is the best for Air shows. If Sigma make a 50-600 OS, that weighs the same I'd get one though. ive been thinking of getting a 150-600 sport, and I might still because its reputably sharper than my lens. The reason I've not bought it is because what I've got is what works for me. the newer lens is a lot heavier, and I use the 50end out of laziness at Air shows. the benefit would just be that extra 100mm, and I bet I'd struggle like you have, with the damn thing! [/QUOTE]

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