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General => General discussion => Topic started by: bobbarley on 22 April 2009, 20:07

Title: Quick question regarding HDR and taking the shots
Post by: bobbarley on 22 April 2009, 20:07
Most cameras have the 3 shot exposure option.  The Sony will take three shots, one at 0, one at -0.7 and one at +0.7.  The problem is that these aren't big enough differences to get effective HDR material.  A friend suggested the easiest way is to take a few shots, and change the shutter speed for each.

Does anyone have a better solution?  Change shutter speeds, or change F setting for each one?
Title: Re: Quick question regarding HDR and taking the shots
Post by: Horney on 22 April 2009, 20:29
Is there no way of changing it from .7 of a stop?

If not then shoot one shot in RAW and then over expose one, under expose one and average expose one in photoshop and HDR it from those.

nick
Title: Re: Quick question regarding HDR and taking the shots
Post by: bobbarley on 22 April 2009, 20:32
Well I could take three shots myself one after another, changing the settings between each.
Title: Re: Quick question regarding HDR and taking the shots
Post by: Horney on 22 April 2009, 20:34
Problem is if anything moves in between the shots. Bracketing means you fire off the shots inb very quick succession. One shot in RAW and then converting also eliminates this problem.

If you want though the best way to do it would be to shoot, drop the speed 2 stops, shoot drop the speed two more stops, shoot again.

Nick
Title: Re: Quick question regarding HDR and taking the shots
Post by: the_stink on 22 April 2009, 21:37
i use -2 0 +2 and just use differnt layers PS and mask out bits from differnt layers to give the desired look
Title: Re: Quick question regarding HDR and taking the shots
Post by: bobbarley on 22 April 2009, 22:02
i use -2 0 +2 and just use differnt layers PS and mask out bits from differnt layers to give the desired look
What about the camera moving as you change exposure?
Title: Re: Quick question regarding HDR and taking the shots
Post by: the_stink on 22 April 2009, 22:17
i use -2 0 +2 and just use differnt layers PS and mask out bits from differnt layers to give the desired look
What about the camera moving as you change exposure?

best thing to do is set up on a tripod and have set the exposure's, use a remote shutter release this then prevents any camera shake and along with the tripod you will have the 3 shots you need :) ill try and do an example if that helps as im goign through soem of the jag photos and they need a little tweak with it  :smiley:
Title: Re: Quick question regarding HDR and taking the shots
Post by: bobbarley on 22 April 2009, 22:22
Set the exposures?  On mine I'd have to take the shot, change exposure, take shot, repeat.
Title: Re: Quick question regarding HDR and taking the shots
Post by: the_stink on 22 April 2009, 22:27
Set the exposures?  On mine I'd have to take the shot, change exposure, take shot, repeat.

ahhh on my canon you can set it so it take 3 in a row with the different settings, as long as its on a tripod and your light handed when settign the next exposure i dont think you will have to much trouble mate  :wink:
Title: Re: Quick question regarding HDR and taking the shots
Post by: bobbarley on 22 April 2009, 22:32
I need a better tripod for sure, mine wobbles a hell of a lot, not sturdy at all.

Could I try using a remote and manually choosing shutter times?
Title: Re: Quick question regarding HDR and taking the shots
Post by: the_stink on 22 April 2009, 22:38
I need a better tripod for sure, mine wobbles a hell of a lot, not sturdy at all.

Could I try using a remote and manually choosing shutter times?

yeah that would be another way or you can cheat  :evil:

if you got your photo with a normal exposure, put it in photoshop, go to image> adjustments> exposure and then you can manually choose to over /under expose the photo  :wink: works just as well tbh and if your finding it tricky to get the shots its great hassle free way to do it
Title: Re: Quick question regarding HDR and taking the shots
Post by: bobbarley on 22 April 2009, 22:40
Yeah Horney suggested the latter method too.

I read somewhere that it isn't as good as taking real individual shots.  But I guess that's just one persons opinion :P
Title: Re: Quick question regarding HDR and taking the shots
Post by: the_stink on 22 April 2009, 22:44
Yeah Horney suggested the latter method too.

I read somewhere that it isn't as good as taking real individual shots.  But I guess that's just one persons opinion :P
with taking the actual photos im sure you get a better feel for the highlights and shadows, which then reflect better in the end result, have you had a look in your camera manula see if there is any way to set it to take 3 photos?
Title: Re: Quick question regarding HDR and taking the shots
Post by: the_stink on 23 April 2009, 19:46
Here is the latest one of the Jag using some HDR

(http://img.photobucket.com/albums/v127/zippypockets/downs2.jpg)
Title: Re: Quick question regarding HDR and taking the shots
Post by: monzablue16v on 23 April 2009, 20:38
HDR won't really work with a single shot tweaked as it works with the amount of additional data from differently exposed raw images. I mean it does to an extent but you will be working with 5mp of data instead of 15mp for example.
My Pentax will bracket 2 stops either way so that is ok, which sony do you have and can you not change the setting? as I am looking at Sony at the minute for my next camera.

Some shameless pimping!

(http://www.monzasphotos.co.uk/Gallery/Landscapes%20and%20HDR/album/large/0002.jpg)

(http://www.monzasphotos.co.uk/Gallery/Landscapes%20and%20HDR/album/large/0006.jpg)

(http://www.monzasphotos.co.uk/Gallery/Landscapes%20and%20HDR/album/large/0004.jpg)
Title: Re: Quick question regarding HDR and taking the shots
Post by: bobbarley on 23 April 2009, 20:41
I've the Sony A200.  It only has two possible fixed settings, -0.3, 0 and +0.3.  Or -0.7, 0 and -0.7.