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HDR photography + smart phones
show user profile  STRAT
Hi guys

i understand all about hdri in my imagery and 3d work, but i've recently had a smart device that takes, or gives the option, to take all your snaps in hdr mode.

why, as a layman, would i want to do this? as a non 3d-er what will an hdr photo give me and let me achieve over a normal photo? they both look identical. in other words, what does hdr photography on my iphone give me?





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read 681 times
4/17/2014 9:54:33 AM (last edit: 4/17/2014 9:54:33 AM)
show user profile  Nik Clark
It gives you brighter dark areas and less overexposed skies.

They take a couple of pictures at the same time and blend them together. It can help with shots that have difficult exposure.

But, to be honest, it's not always amazing.



read 679 times
4/17/2014 10:03:39 AM (last edit: 4/17/2014 10:03:39 AM)
show user profile  STRAT
thanks mate. yes, i've not noticed any difference on my holiday snaps. but then, as you say, perhaps awkward exposures and different lighting conditions might more benefit from it.

seems like a gimmick to me.





SJLEWORTHY.COM











read 678 times
4/17/2014 10:27:03 AM (last edit: 4/17/2014 10:27:21 AM)
show user profile  BishBashRoss
Take a picture of somebody in front of a window, or inside a nice church or cathedral with the stained glass in shot and you should see the benefits. Like Nik says it's situational thing.





read 673 times
4/17/2014 10:37:48 AM (last edit: 4/17/2014 10:37:48 AM)
show user profile  Error404
"tone mapped" images it really should be called I guess.


I leave mine on auto. The phone's camera has such a limited dynamic range, that I actually prefer the 'hdr' capture it when ever the camera thinks it's needed, versus the same image without the 'hdr' capture. On my camera, "auto" will let the camera choose when to do an 'hdr' capture, which is only in the event that there is a high amount of contrast in the image.

I don't really take photos with my phone for any other purpose than to document something I'm working on in the garage, or to take a quick photo to ask a question or to show someone something. So generally I prefer to have as much detail in the photo as possible. the HDR tone mapping does give you noticeably more detail in shadows and highlights, on my phone anyway. I don't particularly care for the effect that it produces in extreme lighting cases, but in those extreme cases, the single capture alone would be worse, in terms of what you can actually make out in the photo.

In general, I still hate the 'hdr' tonemap craze. Still don't know why people have latched onto it, I still think most of the photos look like junk, haha! But, I'm no art critic. ;-)

www.DanielBuck.net - www.DNSFail.com

read 649 times
4/17/2014 2:58:13 PM (last edit: 4/17/2014 3:00:26 PM)
show user profile  reeves1984
Yes it's a tonemapped LDR it's not HDR, because it remains 8bit


Poor naming

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Simon Reeves


www.simonreeves.com - VFX Artist & Blog
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read 618 times
4/18/2014 12:55:58 AM (last edit: 4/18/2014 12:56:10 AM)
show user profile  STRAT
My iPhone also seems to take just 2 exposures, whereas i thought a true hdri had several stops.





SJLEWORTHY.COM











read 615 times
4/18/2014 1:00:04 AM (last edit: 4/18/2014 1:00:04 AM)
show user profile  Error404
a 'true' hdri capture in my mind, really just needs enough latitude to get all of the shadow, and midtone, and highlight detail. However many exposures that takes you, that's enough.

If you're outside, that means you need to get the sun to not clip. If you're inside, you don't need to stop down near as much. Just depends on the location and the light :)

www.DanielBuck.net - www.DNSFail.com

read 601 times
4/18/2014 8:11:44 AM (last edit: 4/18/2014 1:50:44 PM)
show user profile  reeves1984
It's all a bit here or there really... You could say a raw image is hdr because its14bit but you wouldn't usually refer to it like that

If it's a jpg, it's 8bit, it can't be HDR anymore, it's been tonemapped :) Thats the best way to think about it I think

--
Simon Reeves


www.simonreeves.com - VFX Artist & Blog
twitter


www.analogstudio.co.uk <-- I work here

read 594 times
4/18/2014 10:42:52 AM (last edit: 4/18/2014 10:42:52 AM)
show user profile  Error404
I was referring to the number of exposures taken. If two exposures gets it (a very low contrast location), then that's all that's needed :)

www.DanielBuck.net - www.DNSFail.com

read 585 times
4/18/2014 1:50:15 PM (last edit: 4/18/2014 1:50:15 PM)
show user profile  GirishDJoshi
I don't know about smart phones. But I generally use "Bracketing", that's the term used in dslrs. I have set it too 3 pictures and a range of exposures. Specially when photographing large interior spaces with different light exposures.

The get it together in Photoshop. Done.

Post a pictures that you've taken, like to see the output.



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read 550 times
4/20/2014 8:34:50 AM (last edit: 4/20/2014 8:35:22 AM)
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