Develop film to RAW?

Things are starting to spin in my head now So, we've got a TIFF format that is a container containing a scanner RAW, and a RAW file format thats stores image data losslessly?

I had always understood that TIFF was an image format that can be lossless and that RAW was only a container for digital data, not an image?

Thank you - that might explain a recent mystery for me: I uploaded a DNG Raw file to another web site and, when I tested it for downloading correctly, it came back as a TIFF. When I changed the tif ending for dng, it seemed to be the Raw file again.

Philip

If the RAW video option offered a quality and editing control advantage, it could be good for a range of users I suppose. I use Vegas Movie Studio Platinum (the 'non-pro' option), and its a tremendously powerful and flexible editor. But I find myself wishing the colour correction, exposure and contrast-type adjustments looked better - on the K7 files these edits have the feel of working on a small JPEG I find - not a lot of latitude and depth to the changes you make.

I find it is important to set up the camera custom image settings & white valance accurately before recording video - its better to get it right in-camera as I have not found the software adjustments to be that great, despite the Sony Vegas programme having a great range of controls and fine adjustment options. I wonder if video RAW would improve the quality of these corrections in software ?

Does anyone know if a RAW format is likely to be able to be read and worked on in a standard editor like Vegas Platinum?

If you think about it, all files are merely a container for digital data, it's the way that data is interpreted which results in a sensible display.


I should stress that I haven't pulled one of these files apart so some of this is surmise rather than actual knowledge

Like any other image, a RAW file from a DSLR represents a grid of pixels. In the case of Pentax RAW files, what you get is essentially a 12 bit monochrome image. The RAW converter knows that it's a Pentax RAW file, and it knows the bayer pattern used in Pentax DSLRs, as well as the headers for metadata such as colour temperature and bias, tone curves etc. This allows it to decode your RAW file and produce an image.

You can edit the digital s in CS6 still, but you won't get the RAW editing step that's doesn't lose quality like a JPEG. You should try shooting large or medium format for more clarity in your film.

Nigel, TIFF is lossless as you surmised. As regards JPEG, I would only save to JPEG once when the final version is ready. If an image was in progress and needed saving then PSD or TIFF would ensure no data is lost.

48(16)bit TIFFs are 16 bit per channel.

On scanning, I use viewscan which IIRC outputs it's scans to DNG File if required. I always scan to 16bit ( per channel ) TIFF

Not really. RAW is the term used for file formats that come straight as near as possible off the sensor and aren't processed. No one uses the term RAW for a non compressed TIFF or BMP File that is saved from an image editor for example

Exactly and although a lot of RAW Files uses TIFF format the Data is arranged differently than a standard bitmap TIFF File. That's why you need specific coverters for each variant of RAW File

The RAW file from film is the developed film. It's not an electronic file, it's a chemical file.

undeveloped film, surely.

Hmm, an interesting point dpm.

But film users do it in the dark....

hehe - how boring



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indeed. but as film is a negative then you could argue that devloped film is still RAW.

but what about slide film