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Shutterman

Shutterman

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Right I received lovely shinny new d200 today after courier nightmares and have had a little play with it... All fine and Gggggrrrrreat there.

I have just transfered the images I have take to the mac and the D200 images are 15meg where the D80 images are 7meg both cameras have the same sensor....

Am I being dense or have I missed a setting in the D200 ????? And I know the first answer to this post will be RTFM!!!!!! Which on the stool next to the bath for some light reading when I have my dunk in about an hour...

Any clues chaps and chapess's.......

Shutterman
 
My D300 RAW's are kicking in at 9.something MB... that's compressed 12-bit RAWs
 
Venomator said:
Nah m8 ... :suspect: ... 15 to 16 meg in NEF is the norm ... ;)







:p
Click to expand...

You are gangling my chain arn't you Ven....

What am I missing..... it cant be the norm as D80 images are not that size...

Come on Give.........







PLEASEEEEEEeeeeeeee.........
 
:thinking:
Never thought about this.... So i've just checked my files.
D80 raw is 9meg ish
Fuji E900 (9mg compact) 18meg
Whats happening there then? (no hijack intended):thinking:
 
Nah m8 ... straight up is the norm output from D200 imhgo ... :shrug: ... don't have the D80 but they are two entirely different cameras ... :suspect: ... sensor size notwithstanding ... :D



I am sure some techy will come up with the proper valid explanation soon ... :naughty:






:p
 
Right thats sorted... File size now the same....

In the menu system of the D200 you can turn the compression on for RAW files.

Now images are 7.9 on card.

Yippee... just going to compare the two file types..
 
:lol: ... well done ... :D


Learn something ever day ... :suspect: ... although it may affect quality or something else ... :shrug:






:p
 
Ven here is what I have just read... On web..

Raw Compression

NEF (RAW) OFF (Default): Nef's are saved as huge uncompressed 16MB Files.

Comp. NEF (RAW) On: Lossless LZW compression reduces the data to only 9MB for storage. I always use this setting if I shoot NEF.

Nikon is quiet about the algorithm's used and their manual writer are clueless, so the hacker world freaks out about Nikon's wording sometimes saying the compressed file is "Virtually" identical to the uncompressed one.

The data compression is lossless. Nikon may or may not be doing some curve shaping and fitting before the file is saved, and this shaping is happening before the file is saved as NEF regardless of compression. Hackers who reverse engineer the code saw that an LUT is used to shape the highlights and reduce 12 bit linear data to 10 bit semi-log.

Thus the only thing you lose with the compressed option is file size.

Nikon removed the uncompressed option from the D70 because improvements in compressor speed eliminated the need for the wasteful uncompressed option. The world thought Nikon was cheating them by removing the uncompressed option, so Nikon added it back in the D200. You Don't want to use it.

That is from Ken Rockwell's D200 user guide.

Hope that helps..

Shutterman :tumbleweed:
 
Thanx for that SM ... :thumbs: ... I think it does ... :nuts: ... :D



Although I'm a bit confused about the last bit ... "You Don't want to use it." ... not sure I understand the sentiment if it is truly lossless and nothing but file size is lost ... :shrug: ... surely you DO want to use it ... :thinking:





:p
 
Venomator said:
Thanx for that SM ... :thumbs: ... I think it does ... :nuts: ... :D



Although I'm a bit confused about the last bit ... "You Don't want to use it." ... not sure I understand the sentiment if it is truly lossless and nothing but file size is lost ... :shrug: ... surely you DO want to use it ... :thinking:





:p
Click to expand...


I thin if you re-read and put your "Yank vocab" into play he is saying you do not want to use the uncompressed method as that is what has been added back into the menus and was not present in the D70.

Shutterman
 
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