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Ashley Pomeroy
Joined: 07 Jun 2009 Posts: 9
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Posted: Fri Jun 04, 2010 2:17 pm Post subject: Samyang 14mm f/2.8 Infrared |
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Ashley Pomeroy wrote:
I bought one of these lenses recently to stick on the front of my Canon 5D MkII, and in a full-frame context I've written the following blog post about it:
http://women-and-dreams.blogspot.com/2010/05/samyang-14mm-f28-action-time-and-vision.html
The image at the top was taken with a Kodak DCS 760 using an infrared filter, and I was intrigued by the results and so bought a Canon 10D cheaply and had it converted to infrared by the lovely men and women at Protech Repairs here in the UK.
On a 10D the 14mm becomes a 22mm, which is still wide, and the distortion is much easier to correct because the "handlebar" of the moustache is outside the frame.
And so without further ado here are some images I shot last week, during a rare period of sunshine in England, with this lens and an infrared-converted 10D. All at f/11, with minus one exposure compensation. At f/11 the images are sharp across the frame on a 10D. None of them were corrected for distortion. The trees in the first image are actually bent like that in real life:
And here's a before and after shot, before bumping up the contrast and swapping the red and blue colour channels:
It seems to have a very mild and diffuse hotspot in the middle. There is a trick you can do with DCRaw whereby you process the RAW files without demosaicing, apparently because the dyes in the Bayer filter pass infrared equally and so you end up with a pixel-level six megapixel original. This worked well with my Kodak DCS 560 but doesn't result in any greater resolution with the 10D, perhaps because the filter is less strong. |
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poilu
Joined: 26 Aug 2007 Posts: 10472 Location: Greece
Expire: 2019-08-29
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Posted: Fri Jun 04, 2010 2:36 pm Post subject: |
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poilu wrote:
very nice atmosphere, great results
I also love your blog
Quote: |
For example, we could solve the twin problems of Britain's pension deficit and Iceland's ash-belching volcano by rounding up all of Britain's pensioners, sticking them in a big aeroplane, and dropping them into the crater. They would plug up the hole and hopefully also cool the volcano down |
_________________ T* |
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LucisPictor
Joined: 26 Feb 2007 Posts: 17633 Location: Oberhessen, Germany / Maidstone ('95-'96)
Expire: 2013-12-03
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Posted: Fri Jun 04, 2010 3:06 pm Post subject: |
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LucisPictor wrote:
Amazing! Absolutely amazing! _________________ Personal forum activity on pause every now and again (due to job obligations)!
Carsten, former Moderator
Things ON SALE
Carsten = "KAPCTEH" = "Karusutenu" | T-shirt?.........................My photos from Emilia: http://www.schouler.net/emilia/emilia2011.html
My gear: http://retrocameracs.wordpress.com/ausrustung/
Old list: http://forum.mflenses.com/viewtopic.php?t=65 (Not up-to-date, sorry!) | http://www.lucispictor.de | http://www.alensaweek.wordpress.com |
http://www.retrocamera.de |
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symphonic
Joined: 23 May 2010 Posts: 550 Location: SE Europe, Croatia
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Posted: Fri Jun 04, 2010 4:57 pm Post subject: |
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symphonic wrote:
Fantastic results! Amazing how the PP makes it better. |
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ManualFocus-G
Joined: 29 Dec 2008 Posts: 6622 Location: United Kingdom
Expire: 2014-11-24
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Posted: Fri Jun 04, 2010 5:44 pm Post subject: |
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ManualFocus-G wrote:
Very, very impressive images. Well done _________________ Graham - Moderator
Shooter of choice: Fujifilm X-T20 with M42, PB and C/Y lenses
See my Flickr photos at http://www.flickr.com/photos/manualfocus-g |
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dnas
Joined: 14 Nov 2008 Posts: 488 Location: Japan
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Posted: Fri Jun 04, 2010 11:00 pm Post subject: |
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dnas wrote:
Great shots!!!!!
Just a question, the converted 10D, is there an infrared filter on it(R72, 720 nm IR pass), or not.
I notice that there is real colour information in there, so I'm thinking that the 10D has just the IR blocking filter removed (and optical glass substituted), providing both IR and colour info, rather than blocking out most of the visible light. |
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stingOM
Joined: 27 Sep 2007 Posts: 3168 Location: Ireland
Expire: 2012-12-27
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Posted: Fri Jun 04, 2010 11:08 pm Post subject: |
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stingOM wrote:
Your images are surreal! Well done! |
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