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Old Aug 3, 2010, 11:22 AM   #1
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Default moving hdr shot

The picture I am showing below is of a car moving in the sand. How can one take 3 shots of a subject that is moving so far in 3 different settings and then make a HRD picture. Please explain so that we can learn some tricks of photography.....
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Old Aug 3, 2010, 11:29 AM   #2
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You can't do a multiple exposure (*) HDR but you can do a single-exposure pseudo-HDR from either a RAW or even a single JPEG (or take a single image and create a lighter and darker version in photoshop, then combine them in photomatix as if they were different exposures). On a lot of scenes where there really isn't a huge dynamic range (like this one) and what you are really after is the 'HDR look' then a pseudo-HDR could easily be good enough. The washed-out colours in the shadows make me pretty sure that's how this shot was done.

(*) with conventional equipment anyway. I'm sure you could do something with prisms to hook up three camera sensors to a single lens and thereby take three simultaneous shots of a scene at different exposures.

[Edit] Here's the closest picture of my own I could find to use. It's my son on a sledge last winter - moving pretty fast and snow flying everywhere. This is a pseudo-HDR from a single jpeg (AutoHDR settings:7377, quality off (gives a more grungy, photomatix style) and smoothing off)

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Old Aug 3, 2010, 1:53 PM   #3
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MY God this is too much for me to understand....
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Old Aug 3, 2010, 2:01 PM   #4
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In simple terms, you *can't* take 3 actual exposures in a situation like this so you need to fake them.

Take one normal shot and lighten it. That gives your fake over-exposed shot.
Take the same normal shot and darken it. That gives your fake under-exposed shot.

Now, take the three shots (one real and two faked) and run them through Photomatix or the HDR software of your choice just as if you'd taken them properly.

Or alternatively, download my program and let it do it all for you (www.autohdr.co.uk)
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Old Aug 4, 2010, 11:15 AM   #5
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Quote:
Originally Posted by MartinSykes View Post


In simple terms, you *can't* take 3 actual exposures in a situation like this so you need to fake them.

Take one normal shot and lighten it. That gives your fake over-exposed shot.
Take the same normal shot and darken it. That gives your fake under-exposed shot.

Now, take the three shots (one real and two faked) and run them through Photomatix or the HDR software of your choice just as if you'd taken them properly.

Or alternatively, download my program and let it do it all for you (www.autohdr.co.uk)
OK I will try it today thanks...
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Old Aug 4, 2010, 11:46 AM   #6
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Quote:
Originally Posted by hanalwala View Post
The picture I am showing below is of a car moving in the sand. How can one take 3 shots of a subject that is moving so far in 3 different settings and then make a HRD picture...
Judging by your questions, you didn't take the photo you embedded in your thread. So, I've removed it.

Please do not embed photos that you did not take yourself here. Instead, just post a link to page you found it on (versus downloading it and including it in your posts here). That way, we're respecting the copyright of the original photographer.

Thanks.

JimC
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