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08-04-2014, 07:43 AM - 1 Like   #1
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Largest Steel Trestle Bridge in North America

I was visiting my mother in Lethbridge, Alberta this weekend and captured a sunrise at the railway bridge across the Old Man River Valley. Taken with the K3 and Sigma 18-35 f1.8. Don't try and walk across this bridge as trains still use it! I can't run that fast.

Dale

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08-04-2014, 08:27 AM   #2
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beautiful! I've been meaning to get down there and shoot this bridge as well. There is also the wooden trestle in Rockfort I want to check out too.
08-04-2014, 08:41 AM   #3
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Wow, cool shot.
08-04-2014, 09:47 AM   #4
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Why did you decide to use F11 for the shot ?

08-04-2014, 10:17 AM   #5
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f11 is usually a sweet spot for most lenses.

Dale
08-04-2014, 10:27 AM   #6
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I normally do not stop the lens further than 5.6.
08-04-2014, 10:41 AM   #7
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QuoteOriginally posted by DDoram Quote
f11 is usually a sweet spot for most lenses.

Dale
Care to elaborate?
Personally I shoot everything I can at ƒ5.6. 99% of the lenses tested on Photozone are at their sharpest at 5.6 and only slightly worse at ƒ8. If you're thinking ƒ11 on a film 35mm camera, you'd probably be happy with ƒ8 on APS-c.
08-04-2014, 11:25 AM   #8
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For landscapes when you check DoF f11 provides more than f5.6. For FF f16 is commonly used.

Dale

08-04-2014, 11:59 PM   #9
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I'm with normhead here. F5.6 tends to be the sweet spot for maximum sharpness on APS-C (if you're using a lens that is at least f4 or wider*). The further you're focusing away the larger DOF so f5.6 is still usable for landscapes. I would be inclined to use f11 for a shot like this though as it would guarantee that nearly everything would be in focus, nothing above that as diffraction would start being noticeable.

Nice photo though! I wish I had a view like that to photograph in my town. Also, not sure if it's my monitor, but I'm noticing some "whiteness" in that photo. Might need a bump in contrast maybe?

*I know that this is a massive oversimplification, but I'm in a rush

Last edited by walgarch; 08-05-2014 at 12:04 AM.
08-05-2014, 10:53 AM   #10
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Sure f5.6 may have max sharpness for most lenses but how many landscapes are shot at that aperture? I don't see many.

Dale
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