Steiner, I think I see the problem with CS not opening the RAW plugin: TIFF's are not the same as RAW files.
TIFF = Tagged Image File Format. It's a bitmap file format originally intended to be flexible in use via "extensions" to its format and therefore having many uses. For instance my Fuji 602z camera can produce TIFF images as does my fax software but both are different sorts of TIFF due to having different extensions built in. This incompatibility led to TIFF being nicknamed unkindly "Thousands of Incompatible File Formats".
In the early days of digital photography, camera manufacturers realised that TIFF offered a high degree of image accuracy hence its use by Fuji and others.
However, digital camera sensors quickly increased in accuracy and definition so a new format was required to capture the data: enter the RAW format. RAW files are constructed differently to other graphic file formats.
Most bitmap file formats (including JPEG's) are constructed around color channel values in a color space or gamut. A gamut is an entire range of colours from one extreme to the otheri.e. the spectrum. Example: a colour on a web page is made up of red (R), green(G) & blue (B) in various quantities represented by a number between 0 and 255. This is called its value within the RGB gamut. A bright green would have an RGB value of R30, G235, B45 = fixed numbers in a range or gamut.
Stick with me this is going somewhere, honest.
RAW format images files do not correspond to a point in a range. RAW files are linked closely to the sensor in the camera. Each manufactuer uses its own sensor chip therefore each make of camera produces a different RAW file format. Here's a list of the main formats
Canon = .CRW (PowerShot and some low end dSLR's)
Canon = CR2 (upper range dSLR's: 10D, 20D, 1Ds ,kI/MkII)
Casio = .BAY
Fuji = .RAF
Kodak = .DCR
Minolta = .MRW
Nikon = .NEF
Olympus = .ORF
Pentax = .PEF
Sony = .SRF
Fovean/Sigma = .X3F
RAW format cannot be used for anything useful. You can't easily print it, edit it or convert it using standard graphics utilities. But all is not lost!
Each camera manufacturer produces its own software to convert their RAW images into something usable i.e. JPEG's. Usually such software comes bundled with the camera but some manufacturers offer more sophisticated applications at extra cost.
The conversion process is crucial to the quality of the final image whether used for print or web or even panoramas. Unfortunately manufacturers' software isn't always that good. Thankfully, a lot of third party applications have sprung up just to process RAW images (see below).
In Photoshop and indeed the latest version of Elements, Adobe has gone a long way to ease conversion / processing of most populsr RAW formats. Adobe are also big supporters of a single RAW format called .DNG which could simplify processing for all of us!
So there you have it: a TIFF file is not a RAW file so Photoshop's plugin won't fire up when you load one. TO adjust your TIFF's use HSL. Simple.(?)
Hope this helps,
** RAW File COnversion Software
Adobe Photoshop / Elements = www.adobe.com
Bibble = www.bibblelabs.com/
BreezeBrowser = www.BreezeSys.com
Capture 1 (C1) = www.phaseone.com
** Further reading:
YARC's Colour Tutorial = www.yarc.com/colortut.htm
RAW Explanation for photographers = www.dpreview.com/learn/?/Glossary/Digital_Imaging/RAW_01.htm