Raw image size 2.147 Gb?

Question

Hello,
Is there a dng specification raw image size limit? I would like to save huge raw images. We changed the kMaxImageSide from 65000 to 300000. I know the dng's which are bigger then 65000 per size can't be opened in other dng readers. But also if you just have a raw image 30000x30000 it can be bigger then 2.147Gb. It's depends on bits per pixels. For now we have images like 7500 x 60000, but soon we want to save raw images like 7500 x 314169 or better 7500 x 628328. That means for the first image we have raw image data like 4.4Gb and for the other 8.8Gb. Of course this is just possible on a 64bit system.
Is there any plan to support huge raw images (64bit dng sdk)? If so when will you release it?
Best regards,
Marius

Answer 1

For #1, if you look at the image in Bridge you can note the dimensions and resolution...you would then need to put that same resolution in the ACR resolution field.
For #2, no...as you note the ACR Preference controls whether or not Camera Raw will be used to open the image. You can use the Shift key when double clicking in Bridge to open the image directly into Photoshop and bypass the ACR dlog, but Camera Raw will still be used if it's set to be used in the Preferences...
You'll need to keep your image resizing just in Photoshop because Camera Raw is not designed to do that sort of resize/resampling...it's designed first and foremost as a raw processor and later added the ability to open and process camera JPEGs and TIFFs. Putting those kind of controls into Camera Raw wouldn't make sense since the end result of an image opened into Camera Raw is supposed to be an image processed and opened into Photoshop. So, what you are wishing for is really outside of the scope of the development design...sorry.