Luminous Landscape Forum
Equipment & Techniques => Cameras, Lenses and Shooting gear => Topic started by: keithcooper on February 22, 2017, 05:29:52 pm
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It's been a while (1980s film days) since I seriously tried out a Sigma lens and I just had the opportunity to have a test of the 12-24 f4 on my 5Ds - particularly interesting since I have the rather more expensive Canon EF11-24.
Anyway, at the wider end it was a good match to the EF11-24, which (reassuringly) has the edge, but maybe not quite the cost difference for some ;-)
I've written up some notes if anyone is curious...
http://www.northlight-images.co.uk/sigma-12-24mm-f4-dg-hsm-art-review/
Definitely now looking forward to seeing what Sigma's upcoming 14/1.8 is like ;-)
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I am also wondering about the Irix 11mm f/4....just bout to be released?
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I am also wondering about the Irix 11mm f/4....just bout to be released?
Yes, also on my 'to-do' list.
Last year Laowa asked me to test their 12mm 'Zero-D' before it was announced.
A very nice lens that's fully manual, but at 12mm that's not much of a problem
http://www.northlight-images.co.uk/review-laowa-12mm-f2-8-zero-d-lens/
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Sigma seem to be the new Zeiss:)
I am very interested in the new 14 f1.8 for night sky photography, should be a lot better than the classic Samyang 14 f2.8. It will not be as cheap, though.
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and it's not light either at about 2 1/2 pounds
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Sigma seem to be the new Zeiss:)
I am very interested in the new 14 f1.8 for night sky photography, should be a lot better than the classic Samyang 14 f2.8. It will not be as cheap, though.
Well I think they have a long way to go before they become the new Zeiss... I also don't understand the 14 1.8? Why not a 2.8 or even f4 so it's more compact? Who needs a 14 1.8? Am I missing something?
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Well I think they have a long way to go before they become the new Zeiss... I also don't understand the 14 1.8? Why not a 2.8 or even f4 so it's more compact? Who needs a 14 1.8? Am I missing something?
Night landscapes.
At 14mm, everything is in focus anyway, and a wide aperture lets you keep the ISO down while keeping the exposure short enough to get pinpoint stars
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Night landscapes.
At 14mm, everything is in focus anyway, and a wide aperture lets you keep the ISO down while keeping the exposure short enough to get pinpoint stars
Almost but close objects will not be within DoF. Focussing at infinity the 14mm f/1,4 has a near boundary of 4,6 meters.
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Still waiting to see if Sigma corrected for both Coma and Astigmatism in the 14mm 1.8. Their past fast Art glass all have had considerable coma which is very noticeable wide open to around F3.2. (20mm, 24mm 1.4s) Their 35mm 1.4 is still the gold standard for night work IMO when you can use it as it is basically coma free.
The Samyang 14mm (when you get a centered lens) has a very low coma aberration also. Sadly the Irix 15mm F 2.4 is has Strong coma until around F 4.
Coma will effect exposures for nightscapes where you are not working with star trail work.
Still waiting for www.lenstip.com to get a Sigma 14mm 1.8 for their standard testing. They do a great coma and astigmatism test.
Paul Caldwell