Originally posted by B7772ADL
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Canon 100-400 IS vs.Canon 70-300 DO vs. Sigma 80-400
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Originally posted by B7772ADLI thought about the Sigma 80-400 recently and it seems the speed of the autofocus is its weakness (from what I read on D-preview forums). There's nothing like the lightning fast reaction from the 100-400.
All Im worried about is that sensor dusts that can be annoying to clean off before shooting and maybe during shooting, that because you have to clean it.
The thing about the 50-500 and 170-500 from Sigma is that the max aperture at 500mm is f6.3, and for cloudy days is not the best.
Yeah, I have actually thought about the 50-500 *HSM* .
Argh, I cant decide.....
Is it possible to let this thread keep on going for advices, Thanks,
But right now its pointing towards the Sigma on what to own.. Maybe you can change my mind.. I dont want to ruin myself after 1 month where I would be wanting a replacement for that..
Inactive from May 1 2009.
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Originally posted by Rez ManzooriNothing wrong with the BIGMA apart from its low light capture. Now if only Sigma would pull their fingers out and add OS to the BIGMA....Mmmmmmm!!!!
Couldnt they have added OS together with HSM on that Bigma ?
Eric:
I dropped me jaw when I viewed that Citation X, Nice capture Man.
Inactive from May 1 2009.
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I briefly owned a 100-400 and found that when the lens is extended while aimed upwards, for example at a bird in flight, dust would fall onto the sensor spots to appear on subsequent images. I repeated this "test" twice having cleaned the sensor using the Copper Hill method.Where the dust came from is not clear but it is likely that air sucked into the lens by the push pull action [the lens is not sealed] displaced dust already in the lens or camera causing some to settle on the sensor when the camera was pointed upwards.
Yes, the 80-400 is a "reverse twister" from the traditional zoom turning direction. I can see how this could be problematic in itself for some, but for me, the push-pull/twist issue is much more about hand placement and reliabily fixing a frame without unintentionally changing the focal length or established focus.
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My choice would be from now that I would love to get in hand on that 80-400, Although it lacks of the HSM, which was a big mistake by Sigma,(Cant believe they didnt include this on that one)Oh well I heard they should be coming with an upgraded version next year at around spring time. ready for the people at summer.
.........................................................................Inactive from May 1 2009.
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John
If you own a DSLR you have dust problems.......fact.......... so don't get too hung up over it.
All telephoto zoom lenses will give you dust problems.As you zoom in and out air is drawn in or expelled.None are dust proof as we can hardly smear a bead of sealent around the moving parts.
The amount of dust spots will depend on factors such as length of zoom (more air displacement) number of lens changes,your environment while shooting and changing lenses, and how you look after your gear......put the protectors on so as to keep the rear end of the lens clean.
Just remember that sensor dust will always be part of owning a DSLR. None of them are going to dump a barrow load of dirt in your camera between shots. So just concentrate on the decision of which lens to buy.
Greg
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Hey all:
I own the Sigma 80-400 EX and I can tell you its a pretty awesome lens. I have used the 100-400...and its a great lens...but the twist zoom on the Sigma wins hands down. The Sigma is exceptionally sharp...and the OS works great. Also...if you think that 20mm difference means nothing...think again...it means you can squeeze in that 737-800 on the taxiway instead of not getting it. I'm sorry...I love Canon "L" glass...I really really do...but for $400 less the Sigma beats the Canon, hands down.. I dont have all my Sigma pics posted yet...but I have a lot...check em out!Brad Kostelny
Southwest Airlines Flight Attendant
BWI Inflight Base [PIT Commuter]
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Originally posted by greyfoxHey all:
I own the Sigma 80-400 EX and I can tell you its a pretty awesome lens. I have used the 100-400...and its a great lens...but the twist zoom on the Sigma wins hands down. The Sigma is exceptionally sharp...and the OS works great. Also...if you think that 20mm difference means nothing...think again...it means you can squeeze in that 737-800 on the taxiway instead of not getting it. I'm sorry...I love Canon "L" glass...I really really do...but for $400 less the Sigma beats the Canon, hands down.. I dont have all my Sigma pics posted yet...but I have a lot...check em out!
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