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Forums Lobby MASTER YOUR TOOLS - Hardware & Software Digital postprocessing & workflow (Public) HDR software & hardware (Public) topic #7481
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Dr G Registered since 07th Nov 2012Tue 13-Nov-12 12:38 PM
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"HDR and number of shots effect"


Maroubra, AU
          

Hello all,

Have a D800 and also a Promote that I will use for doing HDR shots. My question is what is the effect of more shots vs less and should there be a defined range (ie +/-2ev with say 5 shots at 1ev step or 3 shots at 2 ev steps) or is it better to get a bigger dynamic range and then work down as required?

Going to experiment when I get a better tripod (its on the way) but just asking what the effect of the number of shots actually is as its not clear in all the tutorials and manuals.

Cheers Dr G

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Subject Author Message Date ID
Reply message RE: HDR and number of shots effect
esantos Moderator Nikonians Resources Writer. Recognized for his outstanding reviews on printers and printing articles. Awarded for his high level of expertise in various areas, including Landscape Photography Awarded for his extraordinary accomplishments in Landscape Photography. His work has been exhibited at the Smithsonian.
13th Nov 2012
1
Reply message RE: HDR and number of shots effect
barrywesthead Silver Member Awareded for his continued support of the Nikonians community, freely sharing his expertise, particularly in the areas of digital post processing and printing.
14th Nov 2012
2
     Reply message RE: HDR and number of shots effect
rosewood_ltd Silver Member
25th Nov 2012
3
          Reply message RE: HDR and number of shots effect
Dr G
26th Nov 2012
4
               Reply message RE: HDR and number of shots effect
somhompho Silver Member
30th Nov 2012
5

esantos Moderator Nikonians Resources Writer. Recognized for his outstanding reviews on printers and printing articles. Awarded for his high level of expertise in various areas, including Landscape Photography Awarded for his extraordinary accomplishments in Landscape Photography. His work has been exhibited at the Smithsonian. Nikonian since 10th Nov 2002Tue 13-Nov-12 02:17 PM
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#1. "RE: HDR and number of shots effect"
In response to Reply # 0


McAllen, US
          

There is no set number of exposures to take but it should be at least three. I usually take anywhere from five to nine exposures 1 ev apart and then I will either use them all or every other one depending on the exposure range of the scene and the subject matter.

Ernesto Santos
esartprints.com Ernesto Santos Photography

  

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barrywesthead Silver Member Awareded for his continued support of the Nikonians community, freely sharing his expertise, particularly in the areas of digital post processing and printing. Nikonian since 07th Nov 2006Wed 14-Nov-12 12:48 AM
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#2. "RE: HDR and number of shots effect"
In response to Reply # 1
Wed 14-Nov-12 12:51 AM by barrywesthead

Kleinburg, CA
          

I have done several tests and concluded that there is no loss in going to 2-stop increments so I would recommend either -2 0 +2 or -4 -2 0 +2 +4. I have seen improvements from the latter where wide ranges are involved. Just use auto bracketing and ignore the odd exposures.

For best detail use a tripod and remote. If you touch the camera (except at say 20mm focal length or less) check the image alignments manually before combining.

Barry
http://art2printimages.com

  

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rosewood_ltd Silver Member Nikonian since 10th Sep 2008Sun 25-Nov-12 12:53 PM
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#3. "RE: HDR and number of shots effect"
In response to Reply # 2


Akron, US
          

I'm by no means an expert, but I have been working with HDR for a while now. In my somewhat limited experience, there are a number of factors which should be taken into account when doing HDR. To a large degree, what brackets and increments you choose are a function of the specifics of any particular scene you are trying to capture.

For example, if you have a static scene with a very high dynamic range, going from very bright sunlight to deep shadow, you may be well-served by doing a five or even seven shot bracket at 2EV increments to insure a full capture of all the exposure information you want. I agree that for most situations you can get by with a 3 to 5 exposure bracket at 2 EV.

However...

Occasionally, a scene may present itself where you are limited by technical factors such as the need to keep subject motion ghosting artifacts to an absolute minimum. When this happens, you may end up with chromatic aberration or ghosting artifacts that can be difficult to eliminate.

This is where I've found that a 5 to 7 bracket at 1 EV can be helpful. Sometimes, the best final outcome (post-processed with the least amount or no residual artifacts) is from doing a "pseudo-HDR" with the single, most-optimally exposed image.

One thing I'm discovering with my new D800, as compared with my "old" D700 is that the intrinsic dynamic range of the D800 is vastly superior to the D700. I'm finding scenes now where I might have previously done HDR as a matter of routine, but with the D800, I can massage a single image with curves, contrast, vibrancy/clarity and get the result I want. For myself, I think I will start experimenting with a +/- 2 EV, 3 shot bracket with the D800 and see if that works well as my basic HDR setup. I'll still probably keep a 5 shot, -2 EV to +2 EV for my D700, though.

I strongly second the advice that a remote release is mandatory for good technique, particularly with the D800. I'm still trying to decide for myself if I need to "mirror-up" for all my HDR with the D800, though. I'm leaning in that direction, however.

Good luck and enjoy your D800.
BTW, what software are you using for your HDR?

Russ

Visit my Nikonians gallery.


My Zenfolio page: www.yellowcreekstudio.zenfolio.com

Visit my Nikonians gallery.

Visit my Nikonians gallery.

  

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Dr G Registered since 07th Nov 2012Mon 26-Nov-12 01:30 AM
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#4. "RE: HDR and number of shots effect"
In response to Reply # 3


Maroubra, AU
          

Thanks to all for the replies.

My plan is to use Photomatix Pro with the HDR work but also have Efex HDR as well available and Photoshop 6 as an aside so anything is possible!

It seems that its a bit of trial and error. Thinking 5 shots and 1eV brackets for normal and 2eV for high range.

But its all experimentation and the feel that you want from the looks.

I'll develop a portfolio when I am happy with the results!

Thanks for all the advice....its been good.

Cheers Dr G

Visit my Nikonians gallery.

  

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somhompho Silver Member Nikonian since 24th Feb 2009Fri 30-Nov-12 10:50 PM
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#5. "RE: HDR and number of shots effect"
In response to Reply # 4


Madison, US
          

I learn that beside just thinking of whether it should be 3, 5 , 7 or 9 shots, if I look at the histogram of of the darkest & brightest image then that will help me decide how many I need. Recently I try (with Efex HDR)a 4 shots -rather than 5 shots combination and turn out I got much better result- because the 5th shot (+2) has too much clipping on the hightlight.
I find the slider on the Efex Pro 2 preview screen very useful- because you can kind of see detail you got available from dark to light.


www.HomphoPhotography.com

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