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coliseum photo merge and post processing
Aug 12, 2017 12:58:17   #
rfcoakley Loc: Auburn, NH
 
fooling around with some post processing techniques. Did a stitch of two photos (result of merge is first image below). Result after various post processing steps is second image. Any comments?


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Aug 12, 2017 13:05:25   #
Papa Joe Loc: Midwest U.S.
 
rfcoakley wrote:
fooling around with some post processing techniques. Did a stitch of two photos (result of merge is first image below). Result after various post processing steps is second image. Any comments?


Well done!

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Aug 12, 2017 13:10:54   #
Jay Pat Loc: Round Rock, Texas, USA
 
Papa Joe wrote:
Well done!


2X!!!
Pat

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Aug 12, 2017 13:15:10   #
MMC Loc: Brooklyn NY
 
Jay Pat wrote:
2X!!!
Pat



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Aug 12, 2017 13:28:38   #
rfcoakley Loc: Auburn, NH
 
there were a few obvious problems with the two source images. They were taken at 27mm with 18-105 kit lens on D7000. I discovered after the fact that I had erroneously left bracketing mode on in error from prior shots so left image had 0.33 exposure comp set resulting in F8.0; 1/160; ISO 100 while right image was F8.0; 1/200; ISO 100. I tried to equalize the raw images before merger. Also, the sky is clearly blown out - should have used a polarizer and been more diligent in checking histogram/blinkies after shots. The blown out sky was pretty easy to select for replacement via post processing - I simple used photoshop magic wand. I used a couple of overlay layers for the sky. One is blue sky/clouds from another image during the trip; other is a stock sun image. I ended up using hard light blend mode to add the sun image to the sky image at about 60% opacity. I also appiied a black/transparent gradient to mask of the blended sun. The coliseum portion was edited with NIK Color EFEX Pro 4 and with Topaz detail 3. Besides adding a lot of detail, I wanted to show greater color depth on the right side of the image.

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Aug 12, 2017 13:31:47   #
rfcoakley Loc: Auburn, NH
 
rfcoakley wrote:
there were a few obvious problems with the two source images. They were taken at 27mm with 18-105 kit lens on D7000. I discovered after the fact that I had erroneously left bracketing mode on in error from prior shots so left image had 0.33 exposure comp set resulting in F8.0; 1/160; ISO 100 while right image was F8.0; 1/200; ISO 100. I tried to equalize the raw images before merger. Also, the sky is clearly blown out - should have used a polarizer and been more diligent in checking histogram/blinkies after shots. The blown out sky was pretty easy to select for replacement via post processing - I simple used photoshop magic wand. I used a couple of overlay layers for the sky. One is blue sky/clouds from another image during the trip; other is a stock sun image. I ended up using hard light blend mode to add the sun image to the sky image at about 60% opacity. I also appiied a black/transparent gradient to mask of the blended sun. The coliseum portion was edited with NIK Color EFEX Pro 4 and with Topaz detail 3. Besides adding a lot of detail, I wanted to show greater color depth on the right side of the image.
there were a few obvious problems with the two sou... (show quote)


one point of clarification: source images were taken at min zoom of 18.0mm...27mm is the 35mm equivalent

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Aug 12, 2017 16:38:10   #
speters Loc: Grangeville/Idaho
 
rfcoakley wrote:
fooling around with some post processing techniques. Did a stitch of two photos (result of merge is first image below). Result after various post processing steps is second image. Any comments?

The sky does not fit the image, it is perspectively wrong, other than that I like it!!

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Aug 13, 2017 06:26:13   #
warrior Loc: Paso Robles CA
 

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Aug 13, 2017 06:52:08   #
jerryc41 Loc: Catskill Mts of NY
 
Very nice.

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Aug 13, 2017 06:53:30   #
Bill_de Loc: US
 
Great end result. Nice work.

--

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Aug 13, 2017 07:16:26   #
berchman Loc: South Central PA
 
I would try to selectively desaturate the clothing of the people because the brightness of their colored shirts draws my eye away from the structure.

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Aug 13, 2017 23:37:20   #
sailorsmom Loc: Souderton, PA
 
Good shots, rfcoakley! Very well done!

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Aug 14, 2017 09:53:52   #
Rathyatra Loc: Southport, United Kingdom
 
Like what you did - great image.

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Aug 15, 2017 17:12:10   #
dickparkans Loc: Arizona
 
Good job!

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Aug 15, 2017 22:47:58   #
rfcoakley Loc: Auburn, NH
 
thanks to all for the feedback. On the sky, I did think that a choice of something with less deeper blues and with fewer clouds might work better. I'm not sure, however, what was meant by it being "perspectively wrong." The sky overlay in my composite was positioned horizontally very close to where it was it the scene that I "borrowed" it from. The sun is probably of most concern. In the composite, I placed the sun behind the coleseum wall about 20-30 degrees left with respect to the orientation of the camera. There were no obvious shadows that would indicate a different position for the sun. However, a review of the composite does seem to show greater light on the left side of the image suggesting that the sun may have been low in the sky shining from the right side. I checked this via the photographer's ephemeris for the specific date and time of day (about 11am in Sept) that I was there. It does, in fact, show that the sun was roughly 20 30 degrees to the right of the camera's orientation. So, it would have been better to position the sun in that area or, perhaps, to not include any sun representation in the composite.

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