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4jphotography
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My trusty Canon 24-70l has finally succumbed to my abuse. Wondering if anyone has much real life experience with the Sigma HSM version? Would love to save a few $ if comparable, but can't afford to sacrifice too much IQ.
Flake said:A lot of us help high hopes for this lens, but alas it has failed to deliver. On the Photozone test vignetting was so bad it was even apparant at f/8! Resolution fall off at the borders & corners is also particularly bad, even the Bokeh was criticised.
The Canon version is by no means perfect, with its field curvature issues, and especially with a new one rumoured for so long.
By far the worst part of the Sigma offering is the price at £650 it just doesn't offer enough of a saving over the £1000 the Canon costs, and then there's the second user market where prices are quite a bit less.
If you can get another 6 months out of the current lens then I'd say it'd be better than trying to make a choice at the present time.
MK5GTI said:my only concern is it use 82mm filter, where my ND and CPL are all 77mm, so i need to buy another set.
Flake said:Just buy a step down ring 82 - 77mm isn't a massive difference and £2 finding out if 24mm vignettes (which it does anyway - lots!)
Mt Spokane Photography said:Flake said:Just buy a step down ring 82 - 77mm isn't a massive difference and £2 finding out if 24mm vignettes (which it does anyway - lots!)
Don't you first have to buy the 82mm filters to use a step down ring, unless you mean a step up ring?
awinphoto said:Mt Spokane Photography said:Flake said:Just buy a step down ring 82 - 77mm isn't a massive difference and £2 finding out if 24mm vignettes (which it does anyway - lots!)
Don't you first have to buy the 82mm filters to use a step down ring, unless you mean a step up ring?
I believe that's what he meant... I would be nervous on vignetting on the wide end but if it work, then great..
Mt Spokane Photography said:awinphoto said:Mt Spokane Photography said:Flake said:Just buy a step down ring 82 - 77mm isn't a massive difference and £2 finding out if 24mm vignettes (which it does anyway - lots!)
Don't you first have to buy the 82mm filters to use a step down ring, unless you mean a step up ring?
I believe that's what he meant... I would be nervous on vignetting on the wide end but if it work, then great..
Yes, they put that huge piece of glass there for a purpose, not just a freebe.
neuroanatomist said:I'm going to guess that Flake means using a 77mm filter on the 82mm-threaded lens (whether you call that a step up or a step down is semantic, in that different manufacturers would name it differently).
Looking at the front of the lens, it does seem that there's a bit of room to spare. That's true in many cases, for example, mounting a macro flash on the EF 100mm f/2.8L Macro IS or the EF 180mm f/3.5L Macro lenses requires a Macrolite adapter, which is essentially a 67→58mm or 72→58mm step-down ring, respectively.
The Sigma lens already suffers from a fair bit of optical vignetting, but a loss of 5mm might not add any mechanical vignetting to that.
Flake said:neuroanatomist said:I'm going to guess that Flake means using a 77mm filter on the 82mm-threaded lens (whether you call that a step up or a step down is semantic, in that different manufacturers would name it differently).
Looking at the front of the lens, it does seem that there's a bit of room to spare. That's true in many cases, for example, mounting a macro flash on the EF 100mm f/2.8L Macro IS or the EF 180mm f/3.5L Macro lenses requires a Macrolite adapter, which is essentially a 67→58mm or 72→58mm step-down ring, respectively.
The Sigma lens already suffers from a fair bit of optical vignetting, but a loss of 5mm might not add any mechanical vignetting to that.
Sums it up I guess! although the 5mm is a diameter loss so it means a loss of 2.5mm on each side
Flake said:No it's a step down ringMt Spokane Photography said:unless you mean a step up ring?
awinphoto said:It varies from lens to lens I suppose... for instance there are some lenses which i've heard can give vignetting just putting on a regular filter, hence why they sell low profile filters...
+1 to your carma. Price difference is not only because Canon likes your money. Yes, they like it for sure. But they can produce an excellent stuff too.infilm said:I say, buy the best and cry once.... The Sigma is less money for a reason, less quality. I have the 24-70L and its a great lens. Do yourself a favor, just go out and buy the Canon L....
Flake said:A lot of us help high hopes for this lens, but alas it has failed to deliver. On the Photozone test vignetting was so bad it was even apparant at f/8! Resolution fall off at the borders & corners is also particularly bad, even the Bokeh was criticised.
The Canon version is by no means perfect, with its field curvature issues, and especially with a new one rumoured for so long.
By far the worst part of the Sigma offering is the price at £650 it just doesn't offer enough of a saving over the £1000 the Canon costs, and then there's the second user market where prices are quite a bit less.
If you can get another 6 months out of the current lens then I'd say it'd be better than trying to make a choice at the present time.