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FORUMS Photo Sharing & Visual Enjoyment Nature & Landscapes 
Thread started 24 Mar 2007 (Saturday) 16:13
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HDR - San Francisco at sunset

 
sirsloop
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Mar 24, 2007 16:13 |  #1

I was out in SF on business this past week... I didn't get any time to sight see or anything, but I did manage to snap a couple HDR stacks from my room on the 15th floor of the JW Marriot in San Francisco...

This is an HDR shot from 17 images...


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macroshooter1970
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Mar 24, 2007 19:20 |  #2

wow 17 images. did you really need that many?




  
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sirsloop
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Mar 24, 2007 20:11 |  #3

lol... why not...

probably could have done it with 4 or 5 :)


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folville
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Mar 24, 2007 21:01 |  #4

I think that the massive number of images may have contributed to the softness visible in the buildings, especially those in the lower left hand side of the image.

It's a nice idea, but I'd say that ambition was detrimental here.


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JaertX
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Mar 24, 2007 21:07 |  #5

folville wrote in post #2925263 (external link)
I think that the massive number of images may have contributed to the softness visible in the buildings, especially those in the lower left hand side of the image.

It's a nice idea, but I'd say that ambition was detrimental here.

2nd that. Although maybe it helped add some motion to the sky...that many stacked hurt the buildings more.


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macroshooter1970
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Mar 24, 2007 22:19 |  #6

sirsloop wrote in post #2925073 (external link)
lol... why not...

probably could have done it with 4 or 5 :)

like the others, it hurt the image I think. 3-4 at the most should be more than enough.




  
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sirsloop
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Mar 25, 2007 03:59 |  #7

I actually went back and limited this to 5 shots and recreated.... results were no better or worse than before. In fact, I think having so many images helped with editing. The tonal curve and histogram was much wider... holding more info. FYI, all 17 shots were hand held so that explains a lot about softness. I also never added any sharpening during post processing..

a quick usm and its a bit different...

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kenyc
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Mar 25, 2007 05:13 |  #8

The second one is definitely better. Look at the air conditioning unit in the center, much crisper, sharper.

Nice sunrise.

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folville
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Mar 25, 2007 10:22 |  #9

Now i think it's been oversharpened, so you have both the softness caused by slight differences in camera placement as well as the appearance of jpeg compression.

For this sort of shot you'll definitely need a tripod, even just a cheap one to keep your camera in place. Then you'll be golden.


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sirsloop
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Mar 25, 2007 11:24 |  #10

fyi... here's one exposure from the middle of the stack...

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sonnyc
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Mar 25, 2007 12:42 |  #11

How did you do it? You bracketed 17 shots with different settings and use PS2 HDR Merge feature? Did you use different TV or AV values?

The second one with 4-5 shots seemns to have some kind of ghosting around the edge of the building (or is it my laptop screen :) ).


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sirsloop
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Mar 25, 2007 16:39 |  #12

Yep... HDR Merge, then used the mode: 8bit feature to bring it back to a viewable jpeg.

Both full size images are from all 17 images... the cropped shot of the mountain range was just a single exposure.

These are all ISO 800, F11, 10mm and vary from something like 1/400 to 1/5th handheld out of a Rebel XTi and ef10-22


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folville
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Mar 26, 2007 20:44 |  #13

Obviously you can't go back and shoot these, but if you were to try the same type of thing again, it'd be suggested that you lower the iso rating and keep the shutter at a tolerably high level so that you can hand-hold without so much trouble (1/5th is really pushing it, even with a wide lens). Seeing them now, i'd say that you should definitely have opened the aperture just to give you more working room for other settings.


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Alec ­ Trevelyan
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Mar 26, 2007 22:25 |  #14

2nd one is much better, though now jpeg compression is killing it ;)


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HDR - San Francisco at sunset
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