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johnriley

Joined: 19th March 2002

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johnriley
Enough is enough, the points have all been made.

Comment by johnriley posted on Auto focus making people lazy? at 03/08/2008 - 22:59

johnriley
Excellent set of images, just the right sort of subject for the technique. A lesson in how to get it right!

Comment by johnriley posted on Spooky Lighthouse HDR Images at 03/08/2008 - 18:02

johnriley
I'm sure it doesn't, nor does EPZ, and I understand the reason has to do with bandwidth issues.

If you want to hotlink to images you need a hosting site such as Photobucket.

Comment by johnriley posted on How to Post Images at 03/08/2008 - 17:59

johnriley
I agree with what you have both said. I'll keep on having a go at HDR for a while, but, with the exception of maybe some special effects, I have a feeling that as a technique it will be a dead-end.

Comment by johnriley posted on More HDR Adventures at 03/08/2008 - 17:00

johnriley
The original is far more realistic to the actual scene as it was. This was late evening light, in fact just five minutes of sun in an otherwise totally grey and overcast day.

Somebody was smiling down on us on that cold Friday evening, perhaps Edward FitzGerald himself...

Comment by johnriley posted on More HDR Adventures at 03/08/2008 - 16:55

johnriley
The original version:
[IMG]http://i240.photobucket.com/albums/ff250/johnriley1uk/020-Boulge-Church-800-1.jpg[/IMG]

Comment by johnriley posted on More HDR Adventures at 03/08/2008 - 16:45

johnriley
The JPEG compression essentially takes similar areas of the image and remembers them once instead of multiple times. An over-simplification, but it means that an image that might be 18MB of space when opened could be as little as 2-4MB when compressed. When the file is opened it is reconstructed from the compressed state, and of course approximations and assumptions are made in this reconstruction. This is a lossy format, but good enough for most purposes.

Now the original (compressed) file can vary in size and that's because it could vary from a picture of a grey wall (lots of similar areas, huge compression possible) to a picture of a detailed map (lots of detail that has to be recorded).

If you look at your images there will be variations that account for the difference in file sizes.

Comment by johnriley posted on Mega Pixels vs Megabytes at 03/08/2008 - 16:38

johnriley
Well we could snipe at each other or we could talk about photography. The latter is encouraged!

Comment by johnriley posted on Auto focus making people lazy? at 03/08/2008 - 14:53

johnriley
Here's another go, this time from one image processed several times to produce different "exposures" and with a bit more respect for reality:
[IMG]http://i240.photobucket.com/albums/ff250/johnriley1uk/006-Boulge-HDR.jpg[/IMG]
Boulge Church, Near Woodbridge, Suffolk

Comment by johnriley posted on More HDR Adventures at 03/08/2008 - 14:25

johnriley
Double posting is discouraged because it causes confusion as to which thread to reply in and it clutters the forum.

I'll lock this thread now so you can take replies in the appropriate section.

Comment by johnriley posted on Cable Remote Switch at 03/08/2008 - 13:31

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