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Thread started 19 Jun 2006 (Monday) 01:25
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Library of Congress interior HDR (6 images inside, DUW)

 
jgjulio
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Jun 21, 2006 08:52 |  #16

Wow I love the detail. Great shots.


Julio
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OK, so what's the speed of dark?

  
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spencer87
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Jun 22, 2006 07:17 |  #17

these are incredible! i love the angle in #4




  
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superdiver
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Jun 22, 2006 17:45 |  #18

Just freaking AMAZING colors!

I really want to learn to do this...any suggestions where to start for idiotts?


40D, davidalbertsonphotography.com
Newbie still learning

  
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Sittingshooter
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Jun 22, 2006 21:20 as a reply to  @ superdiver's post |  #19

Beautiful examples of part of our Nations history. I second the request for info for dummies...


Brad "AKA" Sittingshooter
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Transportithere
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Jun 22, 2006 21:32 |  #20

Treasure, I am so happy!!


POTN is a wonderful source of information.
POTN has taken me around the world.

  
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chakalakasp
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Jun 23, 2006 00:47 as a reply to  @ superdiver's post |  #21

superdiver wrote:
Just freaking AMAZING colors!

I really want to learn to do this...any suggestions where to start for idiotts?

Hi! HDR is short for "High Dynamic Range". Essentially, a camera captures much less exposure information than exists in a scene -- if, on a bright sunny day, you expose, say, for the ground in a photo, the sky will be white, or if you expose for the sky, the ground will be nearly black. However, our eyes do not see the world this way, as our cones and rods and brains are capable of collecting and processing much more exposure information than a camera can. In steps HDR. Essentially, you take several photographs of the same scene (in the case of the pics above, I used 6 photos each), each photo using a different shutter speed so as to capture as much information as possible. You then feed these photos to a computer program (Photoshop CS2 has one built in), which will assemble a single HDR image which will contain all of the information found in all of the photos. You can then downsample the image and, using curves, more or less tone the image however you please. You can find a tutorial in these two places:

http://www.cambridgein​colour.com/tutorials/h​igh-dynamic-range.htm (external link)

http://www.luminous-landscape.com/tutorial​s/hdr.shtml (external link)


Ryan McGinnis
The BIG Storm Picture (external link) PGP: 0x65115E4C
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Images@Getty (external link) Images@Alamy (external link)

  
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superdiver
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Jun 23, 2006 12:45 |  #22

So you use the shutter speed, not the aperature to adjust the exposure. I would have guessed the aperature...

What speeds do you usually use?


40D, davidalbertsonphotography.com
Newbie still learning

  
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SilentBob
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Jun 23, 2006 12:57 |  #23

There is some software you can try for free from HDRSoft (external link) which is kind of fun. Its also easier to use than Photoshop to do the Tone Mapping. The free software is fully functional it just leaves a watermark on your final image.

Regards,


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Canon 85mm f/1.8
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98photo
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Jun 23, 2006 13:01 |  #24

Amazing photos!




  
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chakalakasp
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Jun 23, 2006 15:20 as a reply to  @ superdiver's post |  #25

superdiver wrote:
So you use the shutter speed, not the aperature to adjust the exposure. I would have guessed the aperature...

What speeds do you usually use?

You use whatever speeds are appropriate to the scene -- you use a lightmeter (or the camera's built in lightmeter) to get a base reading, then bracket around that.

If you adjust the aperature, the DOF changes between each shot.


Ryan McGinnis
The BIG Storm Picture (external link) PGP: 0x65115E4C
Follow my storm chasing adventures! (external link)
Images@Getty (external link) Images@Alamy (external link)

  
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SoaringUSAEagle
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Jun 23, 2006 16:05 as a reply to  @ post 1635025 |  #26

NatsRoses wrote:
WOW!

LOL my thoughts exactly!

Very very very NICE!!!


5D4 | 50 1.4 | 85L II | 24-70L II | 70-200 2.8L IS II

  
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Transportithere
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Jul 19, 2006 05:23 |  #27

I had to see it again


POTN is a wonderful source of information.
POTN has taken me around the world.

  
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Transportithere
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Nov 07, 2006 03:54 |  #28

How do you spell that?


POTN is a wonderful source of information.
POTN has taken me around the world.

  
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joseif
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Nov 07, 2006 04:46 as a reply to  @ post 1640100 |  #29

more than Excellent thanks for these upnormal pics.
thanks for eyes pleasure.




  
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hvman
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Nov 07, 2006 05:33 |  #30

All good pics.........but my fav is the 4th from top :)


Win...

| POTN.AU| FlickR! (external link) |

  
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Library of Congress interior HDR (6 images inside, DUW)
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