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Technique and Advice => Photography Technique => Topic started by: MTL18 on August 13, 2014, 05:28:40 PM

Title: City shots at night
Post by: MTL18 on August 13, 2014, 05:28:40 PM
Hi All,

Took my first city shots at night and noticed something peculiar. I shot at 18mm with my Sigma 18-35, a lens that has very little distortion if any. I noticed that when the tallest building was in the centre of my shot, it appeared straight. However, when it was at the edge, it was clearly bent. The building was still perfectly straight, but not 90 degrees to the ground. I had to adjust the image 4.3 degrees to correct for this.

The city I was shooting had a large river running through it, and thus all the buildings lined up to an edge. This edge was not straight from my building, perhaps explaining why the tall building appeared crooked. 

Is my experience normal? For presentation, would you correct it so the largest building was straight?

Thanks for your help.
Title: Re: City shots at night
Post by: NancyP on August 22, 2014, 03:45:48 AM
All wide angle zooms have some barrel distortion at the wide end. Plus, at 18mm, the field of view is wider than what the human eye perceives normally. Post processing automatic lens corrections are great for this problem, most of the time.
Title: Re: City shots at night
Post by: idene on August 22, 2014, 05:34:52 AM
Anything wide will have barrel distortion as already stated. It's impossible to have a wide lens without barrel distortion. The lens will distort the foreground in order to expand the background.

Easily fixed issue that takes a few clicks.
Title: Re: City shots at night
Post by: mdmphoto on August 22, 2014, 05:57:21 AM
How about let's see some "City shots at night"?
Title: Re: City shots at night
Post by: mrkahn on August 22, 2014, 09:24:26 AM
How about let's see some "City shots at night"?

Here you go:     http://malcolmkahn.com/#/gallery/cityscapes/nyc-with-big-moon/ (http://malcolmkahn.com/#/gallery/cityscapes/nyc-with-big-moon/)
Title: Re: City shots at night
Post by: LovePhotography on August 24, 2014, 09:08:06 PM
Works great... slam dunk.
http://www.dxo.com/intl/photography/dxo-optics-pro/photo-software
Title: Re: City shots at night
Post by: mdmphoto on August 24, 2014, 10:28:49 PM
How about let's see some "City shots at night"?

Here you go:     http://malcolmkahn.com/#/gallery/cityscapes/nyc-with-big-moon/ (http://malcolmkahn.com/#/gallery/cityscapes/nyc-with-big-moon/)

Beautiful work Mr. Kahn. A great night skyline is always nice, but those bridge photos, particularly the spans, were simply wonderful...
Here's a couple two or three of mine:
Title: Re: City shots at night
Post by: Omni Images on August 25, 2014, 01:12:58 AM
Here's a few of Sydney at night.