Help! Sigma 10-20mm not really sharp at all!

sid

sid

sid

Soldato
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Ok pics coming in a few mins

I've taken this lens on couple of day outs and im less than impressed here.

Its just soft and not pin sharp at all.

Am I doing something wrong here? Or is there a problem

sid

Ok some pics

any comments on the 100% crop?





Edit2/

Heres another example where nothing seems to be in focus really?

 
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Yup not sharp there at all.

Infact worse than the two I had which got returned!!!

Sigma do have some QC issues :( the 10-22s I've used have always been tack sharp.

Well worth the money when I eventually afford one...
 
You're shooting at F4-F5, for landscape shots F11-F16 are more commonly used to get everything in focus. The lens should also be sharper when stopped down.
 
Fstop11 said:
in this long going debate I always say if its for a Canon body, get the EFs 10 - 22. Its L quality sharp!
The Sigma can produce the odd good sharp model but its a lucky dip. You'll have to send it back and request a better copy.
Click to expand...

well I bought this a month ago from a high street shop. Can I request a swap?

Its pretty obvious where i got it from!

Btw this was shot on a 400D

I'm taking some more pics in the bathroom now

sid
 
Raikiri said:
You're shooting at F4-F5, for landscape shots F11-F16 are more commonly used to get everything in focus. The lens should also be sharper when stopped down.
Click to expand...

One of them was taken at F11 the top right one

sid
 
Ok i think there may be something wrong when you focus far away as closeups are very sharp overall.

Compare these two waterfall show, one has more of a background and is soft and the other one is pretty sharp for 0.2s handheld





Should I return this to sigma or high street shop. What should I say? I want this swapped out. The canon is still very expensive lens though.

sid
 
Considering where you got it from I would imagine you paid £349.99 for it? I would try going to the shop and asking for a replacement first though.

The Canon can be had for £373.99, it isn't much more for a much better lens, there's also the Tokina 12-24 which is a very good lens for around £250.
 
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Raikiri said:
Considering where you got it from I would imagine you paid £349.99 for it?

The Canon can be had for £373.99, it isn't much more for a much better lens.
Click to expand...

It was £305 actually a month ago. Will they just offer a refund if I say its soft?

sid
 
Fair enough, it still isn't a huge premium to pay and the Tokina is better for less money.

I can't say what they'll do, they might try and offer store credit... I'll be honest, I have never dealt with them, online is almost always the cheapest option.
 
Raikiri said:
Fair enough, it still isn't a huge premium to pay and the Tokina is better for less money.

I can't say what they'll do, they might try and offer store credit... I'll be honest, I have never dealt with them, online is almost always the cheapest option.
Click to expand...

Is it worth getting it swapped. How common is this problem?

sid
 
Vertigo1 said:
Just send it to Sigma UK for calibration - it's free under warranty.
Click to expand...

Yeah but I don't want to pay for that sort of stuff, I don't have time to faff around with RMAs either.

I'm seriously unhappy now. I'm in debt as it is without brand new stuff have to be duff

sid
 
Maybe take it back to the shop and demand a refund. If they refuse then ask them to get it recalibrated for you, i.e. they can have all the hassle of sending it off to Sigma and you just collect it from them when it's returned.
 
Vertigo1 said:
Maybe take it back to the shop and demand a refund. If they refuse then ask them to get it recalibrated for you, i.e. they can have all the hassle of sending it off to Sigma and you just collect it from them when it's returned.
Click to expand...

I don't want to go in and sound like a ranting n00b. Is there a website that documents this problem so I know what to say to them.

they will obviously try and fob me off and say I can't use it or something:p lol

sid
 
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