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HDR, Panoramas and Tone Mapping Merging several different exposures into a single image

Grainy HDR's?

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  #1  
Old 04-17-2008, 07:07 PM
sheeps41 sheeps41 is offline
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Grainy HDR's?

I cannot for the life of me get a decent looking HDR like most people are able to get. I've done everything from 1 RAW to 3 seperate exposures to 5 separate exposures. I'm shooting with a D2H at 200ISO for everything plus a decent tripod. I use Photomatix Pro with no noise reduction software. Any help?
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Old 04-17-2008, 07:48 PM
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grannysdc grannysdc is offline
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Re: Grainy HDR's?

An Example from start to finish might help?
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Old 04-17-2008, 09:01 PM
sheeps41 sheeps41 is offline
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Re: Grainy HDR's?

Well I don't have a starting one, but this was composed of 5 shots I believe.

http://www.flickr.com/photos/25409157@N03/2411786331/


I am actually looking for a more unrealistic product and when I try to do this it just becomes grainy. Would increasing the exposure help?
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Old 04-17-2008, 10:25 PM
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Craig Walters Craig Walters is offline
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Re: Grainy HDR's?

explain your workflow from start (taking the original shot or shots) to finish, including camera settings and software settings.

and when you say you're looking 'for a more unrealistic product', you might want to explain that as well. 'unrealistic' is a pretty broad category.
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Old 04-17-2008, 11:16 PM
sheeps41 sheeps41 is offline
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Re: Grainy HDR's?

My apologies for the lack of information. By more unrealistic I mean an image like this: http://www.flickr.com/photos/istargazer/170181329/

Ok, my workflow.

ISO:200
f-stop: ~9
Manually bracketed shutter speed in increments of +1/-1
Around 5 shots from a decent tripod.

I need my original pictures for sure, I think I'll try some HDR's tomorrow and get the originals up for you guys to help. But so far in my description, any problems jump out at you? I think I might start overexposing from the beginning, the darker frames I think are screwing me but I don't know of any other way to capture the sky...
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Old 04-17-2008, 11:37 PM
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grannysdc grannysdc is offline
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Re: Grainy HDR's?

It not only looks grainy but very flat also.. Like there were more shadow shots than highlights and you may have emphasized the shadow noise that is so prevalent in digital..

After reading some reviews on the D2H there were many references to excessive noise.. so It may just be the sensors used..

You might try tweaking the individual exposures before doing the HDR.. even as far as running a noise reduction on them without any sharpening applied.. "Imagenomic Noiseware" or any other popular ones should work pretty good.

I thought this would be somewhat unrealistic and it shows the noise
Attached Images
File Type: jpg 2411786331.jpg (97.9 KB, 126 views)

Last edited by grannysdc; 04-17-2008 at 11:39 PM. Reason: spelling
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Old 04-27-2008, 06:15 AM
demonzjr demonzjr is offline
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Re: Grainy HDR's?

ur work flow dont include processing at photomatix.
did u tone map ur hdr in photomatix. i believe default tone mapping will give u great result
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Old 05-12-2008, 11:43 PM
Graeme Graeme is offline
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Re: Grainy HDR's?

You could also try using a lower ISO, if the shot is daylight then go as low as you can.
The higher the ISO the more grain\noise is introduced into the image.

Graeme
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Old 01-29-2009, 11:19 AM
greg-andrew74 greg-andrew74 is offline
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Re: Grainy HDR's?

i am sure i read somewhere that 3 exposures will leave you withj more noise than with 5 exposures and so on... but i also tend to keep my tonemapping to a minimum in photomatix. save as Jpeg, set PS to open jpegs in Raw converter, play a little with blacks, vibrance and open. I then make the final tweaks, and finally use a plugin call Noiseware by Imagenomic to remove the noise... we all have different methods, and its getting into your own groove that is often the key.
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Old 02-15-2009, 09:53 AM
Mike Savad Mike Savad is offline
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Re: Grainy HDR's?

Quote:
Originally Posted by sheeps41 View Post
I cannot for the life of me get a decent looking HDR like most people are able to get. I've done everything from 1 RAW to 3 seperate exposures to 5 separate exposures. I'm shooting with a D2H at 200ISO for everything plus a decent tripod. I use Photomatix Pro with no noise reduction software. Any help?
if your doing it in photomatix anything with a big blank spot will show up as noise. white blue, doesn't matter. you need variation. for large spaces of noise, i'll layer in photoshop and mask it out, otherwise when shooting i'll simply avoid shots with large expanses of nothing.


---Mike Savad
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