Speeding up NEF raw preview?

[BTShamus]

I note that full and half size renders take several seconds to show a new image.

Is there a way to:

(a) show the jpeg preview first, then render from RAW and overlay.
(b) speed up the RAW decode using a 2nd thread or Core. I notice that XNView only uses 25% of my Quadcore. Meaning it could go much faster if it was 2 threaded.



camera : d300 12/14 bit lossless compressed.
cache: running on a software striped RAID0

[xnview]

Currently not possible, but a good idea

[BTShamus]

I don't understand why XnView is unable to show the embedded JPG while rendering the HQ image in the background? Both EXIFTOOL and Preview Extractor http://drchung.new21.net/previewextractor/ can do this with ease. In addition Preview Extractor is multi-threaded!

[obelisk]

I have my already set to show the embedded JPG ONLY, and it takes 2-3s
Chances are your setting is also set to show the embedded JPG already for raws.

[Eric B]

in Xnview, you have 2 settings in option to set "Camera RAW" to "embedeed thumbnail":
browser/preview
view/misc.

Anyway, for RAW viewing, I prefer FastStone than Xnview, but Xnview stays my main picture viewer for everything else (mainly jpg)

[xnview]

Anyway, for RAW viewing, I prefer FastStone than Xnview

Why?

[Eric B]

simply because fastone is (much more) faster to load the jpg embedeed in raw file than Xnview (Xnview needs about 1 sec), whereas Xnview seems to be faster to load full resolution jpg...

[xnview]

simply because fastone is (much more) faster to load the jpg embedeed in raw file than Xnview (Xnview needs about 1 sec), whereas Xnview seems to be faster to load full resolution jpg...

Strange, could you send me a raw sample?

[obelisk]

I find previews fine, as it loads in a separate thread.
Full view is very slow