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Post by Barry on Mar 11, 2012 20:53:09 GMT
This is the view north from just below the summit of Pen y Fan (highest mountain in South Wales). Not a particuly clear day as there was still a lot of haze in the distance.  Nikon D700, f8, 1/200sec, ISO200, Sigma 12-24 Lens at 14mm. |
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Post by katynoelle on Mar 11, 2012 21:13:43 GMT
But the haze adds atmospheric mood!  just breathtakingly gorgeous! It seems to me (but I'm guessing you've already checked it) that it needs a very slight ccw rotation? but, then, the sheep might slide off the hill if you do that....  |
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Post by Barry on Mar 11, 2012 21:20:50 GMT
No problems with the sheep in Wales, they have two shorter feet on one side so that they can traverse the mountains around here whilst grazing ;D.
As for rotating the image, the darker cloud level looks level, so maybe it is all of the curves within the image giving a optical illusion. Be interesting to see what others think.
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Post by jeeperman on Mar 11, 2012 21:27:27 GMT
Nicely done Barry! Usually the haze bothers me some but here it looks quite natural. As for the horizon, I think it is an illusion. The center appears to be a little higher and both right an left drop off equally. If anything maybe a little fisheye thing but I don't think so just the shape of the land?
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Post by Antonio Correia on Mar 11, 2012 21:42:56 GMT
Beautiful |
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Post by nickjohnson on Mar 11, 2012 22:49:22 GMT
Barry, That is very nice - terrific job. I'm out of puff just thinking about that climb.  The horizon thing looks like simple lens barrel distortion. At 14mm on a full frame - and given the position of the horizon - entirely to be expected. |
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Post by katynoelle on Mar 11, 2012 22:54:13 GMT
No problems with the sheep in Wales, they have two shorter feet on one side so that they can traverse the mountains around here whilst grazing ;D. guffaw! ;D I wondered if it was that.... |
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Post by Barry on Mar 11, 2012 23:00:56 GMT
Thanks for your comments, I do wonder if the Nikon version of this lens would preform any better, considering it is twice the money.
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Post by nickjohnson on Mar 12, 2012 10:27:06 GMT
Barry, Don't go changing lenses to reduce distortion. They ALL have distortion - especially zooms - it's just part of the compromises to be made in practical commercial lens design.
FWIW I get rid of this type of distortion automatically using DXO lens correction modules - which work brilliantly. Lightroom and Photoshop also have that functionality.
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