June picture of the month entry thread!
05-17-2008, 11:32 AM
#106
12 Second Club
iTrader: (3)
Join Date: Mar 2006
Location: Richmond, VA
Posts: 291
Likes: 0
Received 0 Likes
on
0 Posts
If an "HDR" image is made from a single exposure it is actually just a tone mapped image. If a single image is created from multiple exposures it is HDR. And even then it still needs to be tone mapped to be viewed on CRT and LCD monitors. This is a real HDR image. It was created using three 16-bit RAW images of varying exposures and combining them into one 32-bit image. Then it was tone mapped and reduced to 8-bit (JPG) so it could be visible on your/my monitor. This image looks more like the "HDR" images you tend to see on the internet. But, it was created using one 8-bit JPG image. Therefore it is not HDR. It is tone mapped.
05-17-2008, 03:28 PM
#107
TECH Senior Member
iTrader: (42)
Join Date: Dec 2004
Location: Tomball/Nacogdoches TX
Posts: 5,063
Likes: 0
Received 0 Likes
on
0 Posts
If an "HDR" image is made from a single exposure it is actually just a tone mapped image. If a single image is created from multiple exposures it is HDR. And even then it still needs to be tone mapped to be viewed on CRT and LCD monitors. This is a real HDR image. It was created using three 16-bit RAW images of varying exposures and combining them into one 32-bit image. Then it was tone mapped and reduced to 8-bit (JPG) so it could be visible on your/my monitor. This image looks more like the "HDR" images you tend to see on the internet. But, it was created using one 8-bit JPG image. Therefore it is not HDR. It is tone mapped.
05-17-2008, 03:30 PM
#108
Launching!
iTrader: (5)
Join Date: Jan 2006
Location: Jasper, TN/Atlanta, GA
Posts: 296
Likes: 0
Received 0 Likes
on
0 Posts
If an "HDR" image is made from a single exposure it is actually just a tone mapped image. If a single image is created from multiple exposures it is HDR. And even then it still needs to be tone mapped to be viewed on CRT and LCD monitors. This is a real HDR image. It was created using three 16-bit RAW images of varying exposures and combining them into one 32-bit image. Then it was tone mapped and reduced to 8-bit (JPG) so it could be visible on your/my monitor. This image looks more like the "HDR" images you tend to see on the internet. But, it was created using one 8-bit JPG image. Therefore it is not HDR. It is tone mapped.
05-17-2008, 06:06 PM
#109
TECH Veteran
iTrader: (4)
Join Date: Aug 2006
Location: San Marcos/Plano, Texas
Posts: 4,821
Likes: 0
Received 0 Likes
on
0 Posts
05-18-2008, 09:11 AM
#111
TECH Apprentice
iTrader: (2)
Join Date: Aug 2006
Location: OKC, OK & Hatteras Island, NC
Posts: 310
Likes: 0
Received 0 Likes
on
0 Posts
If an "HDR" image is made from a single exposure it is actually just a tone mapped image. If a single image is created from multiple exposures it is HDR. And even then it still needs to be tone mapped to be viewed on CRT and LCD monitors. This is a real HDR image. It was created using three 16-bit RAW images of varying exposures and combining them into one 32-bit image. Then it was tone mapped and reduced to 8-bit (JPG) so it could be visible on your/my monitor. This image looks more like the "HDR" images you tend to see on the internet. But, it was created using one 8-bit JPG image. Therefore it is not HDR. It is tone mapped.
Is the pic of the real HDR tone mapped?
I thought that HDR was suppost to allow you to take a picture of an inside a building, with windows in the background, and be able to keep good detail on both the interior of the building and in the windows. It seems most of the good information on HDR seems to relate this to taking pictures of the inside of a church w/ stained glass windows. With out HDR it would be hard to keep good detail of the inside objects, and allow for good detail in the stained glass picture.
How come in that picture the windows look overexposed? Was it because of the exposure levels the photographer used?
I understand why you posted what you did... Just to draw a point that a tone mapped image is not HDR, and that some HDR images do not have that extreme look. IMO, HDR is a tool for photographers to use in really harsh lighting conditions.
05-18-2008, 09:22 PM
#114
TECH Enthusiast
iTrader: (5)
Join Date: Jun 2007
Location: Flourtown, PA | Bethany, DE
Posts: 537
Likes: 0
Received 0 Likes
on
0 Posts
If an "HDR" image is made from a single exposure it is actually just a tone mapped image. If a single image is created from multiple exposures it is HDR. And even then it still needs to be tone mapped to be viewed on CRT and LCD monitors. This is a real HDR image. It was created using three 16-bit RAW images of varying exposures and combining them into one 32-bit image. Then it was tone mapped and reduced to 8-bit (JPG) so it could be visible on your/my monitor. This image looks more like the "HDR" images you tend to see on the internet. But, it was created using one 8-bit JPG image. Therefore it is not HDR. It is tone mapped.
The above helps for those shots where you cannot bracket your exposures due to movement in the frame or other related issues.
05-18-2008, 10:32 PM
#115
Just a FWIW: You can create an HDR out of "1" image. You have to shoot in RAW. You then take the RAW image and create 2 new images. One with an exposure value of -2 and the other with an exposure value of +2. Make sure that while you are saving them, it does NOT save the file info or it will retain the original RAW image info for all 3 photos. Make sense?
The above helps for those shots where you cannot bracket your exposures due to movement in the frame or other related issues.
The above helps for those shots where you cannot bracket your exposures due to movement in the frame or other related issues.
05-19-2008, 12:04 PM
#118
12 Second Club
iTrader: (3)
Join Date: Mar 2006
Location: Richmond, VA
Posts: 291
Likes: 0
Received 0 Likes
on
0 Posts
I have a question...
Is the pic of the real HDR tone mapped?
I thought that HDR was suppost to allow you to take a picture of an inside a building, with windows in the background, and be able to keep good detail on both the interior of the building and in the windows. It seems most of the good information on HDR seems to relate this to taking pictures of the inside of a church w/ stained glass windows. With out HDR it would be hard to keep good detail of the inside objects, and allow for good detail in the stained glass picture.
How come in that picture the windows look overexposed? Was it because of the exposure levels the photographer used?
I understand why you posted what you did... Just to draw a point that a tone mapped image is not HDR, and that some HDR images do not have that extreme look. IMO, HDR is a tool for photographers to use in really harsh lighting conditions.
Is the pic of the real HDR tone mapped?
I thought that HDR was suppost to allow you to take a picture of an inside a building, with windows in the background, and be able to keep good detail on both the interior of the building and in the windows. It seems most of the good information on HDR seems to relate this to taking pictures of the inside of a church w/ stained glass windows. With out HDR it would be hard to keep good detail of the inside objects, and allow for good detail in the stained glass picture.
How come in that picture the windows look overexposed? Was it because of the exposure levels the photographer used?
I understand why you posted what you did... Just to draw a point that a tone mapped image is not HDR, and that some HDR images do not have that extreme look. IMO, HDR is a tool for photographers to use in really harsh lighting conditions.
