Which wide angle zoom would you go for?


andy_bell

Link Posted 21/01/2014 - 11:05
I'm looking at adding a wide angle zoom to my collection, but not sure which one to go for....
Something to slip underneath my Pentax 18-135mm WR, so it would have to be 8-16 or 10-20mm but don't want to spend a fortune.
At the moment I'm leaning towards the Sigma 10-20 F3.5 is this a good choice, or would the 8-16 be a better choice?
this would be mainly for general wide angle work, nothing too specific.

Regards

Andy
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aliengrove

Link Posted 21/01/2014 - 11:17
I have both the Sigma 10-20 and 8-16mm. The 8-16mm is the better lens imo, it's sharper, especially at the corners. At 15mm it's as sharp if not sharper than the 15mm Ltd. It can't take filters but the lens coating is unusual in that it makes blue skies look like you were using a polariser. Lens corrections also don't work below 10mm in Lightroom, and it has complex moustache-type distortion at 8mm. However, unless you're shooting architecture this is not a problem; saying that, I did a commercial architecture shoot last year with the 8-16mm and it worked brilliantly. If I had to sell one of my wide-angle zooms, the 8-16mm is the one I'd keep.
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vic cross

Link Posted 21/01/2014 - 12:29
The 10-20 is a great lens but with a wide angle the F3.5 isn't important. most things are in focus anyway and it is normally used with a smaller aperture anyway so the original 4-5.6 is cheaper and does the job. I know nothing of the 8-16 so can't comment. CHEERS Vic.
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AndrewA

Link Posted 21/01/2014 - 17:17
vic cross wrote:
The 10-20 is a great lens but with a wide angle the F3.5 isn't important. most things are in focus anyway and it is normally used with a smaller aperture anyway so the original 4-5.6 is cheaper and does the job. I know nothing of the 8-16 so can't comment. CHEERS Vic.

Same here, can highly recommend the Sigma 10-20 4-5.6 version
Andrew

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spinno

Link Posted 21/01/2014 - 17:27
I have a Sigma 12-24...which come the day could be used on FF
David

SteveEveritt

Link Posted 21/01/2014 - 18:27
Another vote for the 8-16, the differece between 8mm and 10mm is big and 12 mm is huge. Examples
16mm



12mm



10mm



8mm


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Pentaxophile

Link Posted 22/01/2014 - 10:17
Nice comparison of focal length! I was going to go out and do a similar test using one of my own lenses in response to another thread, but you've saved me the bother. I've played with the images to show how they affect the angle of view below, I do hope you don't mind (PM if you do).



[link=https://500px.com/will_brealey/[/link]
Last Edited by Pentaxophile on 22/01/2014 - 10:21

andy_bell

Link Posted 22/01/2014 - 10:43
I think i'll have to see if my budget will stretch to the 8-16mm, its quite impressive....
And the F.O.V at 16mm is only 1 degree different from the Pentax 18-135 zoom according to the data on the lenses.
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SteveEveritt

Link Posted 22/01/2014 - 10:58
I never thought to overlap like this, great idea and it really emphasises the difference.
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