Hi all,
I'm new to this forum and Aperture i guess. So i'm not i really understand this business with JPEG previews. I've recently shot a large number of photos in RAW. When you first view them on Aperture or import them to the Aperture library you basically see the JPEG preview. If you double click the photo, the photo enlarges. What you see is then the JPEG preview enlarged. There is then a delay of about 2 seconds before the photo changes to the RAW image.
Firstly, i've noticed the JPEG preview to be very different to the RAW file. The JPEG preview is in fact sometimes quite distorted either horizontally or vertically. And i can't help thinking the conversion to RAW actually changes the photo to the extent of cropping it, so use lose some of the photo. I found this quite strange. Secondly, is there a way to retain the JPEG preview. Can you somehow revert to it using the Aperture interface or just view it somewhere else in the library? I'm just thinking it's a bit odd that say if you have 400 hundred photos, and they are displayed as JPEG preview thumbnails until you click onto it and then even the thumbnail changes. Is this supposed to be how Aperture works?
Many thanks,
Darren,
It is working correctly. The JPEG preview that is inside a RAW file is processed in camera using the picture style settings in the camera. To get the RAW preview to match closer to what Aperture does with the RAW file you should choose a neutral picture style in your camera menus since Aperture by default will not do anything drastic when processing the RAW file.
You cannot save the RAW preview file with Aperture. There may well be a tool that can extract it but I’m not aware of one.
If you really like the way your camera is processing the JPEG file, you can switch to RAW + JPEG with your camera and you will get a separate JPEG file you can keep in Aperture processed by your camera.
Or, you can manipulate the RAW file in Aperture using the adjustment bricks to better match how the camera processes its JPEG and then save that as a preset. Then use that as an import preset that gets applied to every RAW image upon import.
Thomas
Some cameras have lens with significant distortion (e.g. the Sony NEX series with SELP1650 lens). On the Sony NEX series, the RAW files produced in the camera have no lens distortion applied, but the JPEG files do have a approximate correction applied by the camera software. This can cause a noticeable difference between the two files.
Kevin Horton
Moses Lake, WA