I hope you listed it as a K20D, and not a K20.

A link to your auction here might be useful too.

Where in Spain are you?

Interesting question, and one to which I don't know the answer because I don't have a K7.

RAW (or PEF/DNG) frames contain information recorded directly from the sensor without any of the in-camera changes.

I thought, until now, that the sensor could only record in colour.

If however you chose to save the images as RAW+JPG, the JPG may well retain any camera/user induced changes.

Is it also possible that you are applying a development preset when you import the images into Lightroom. If you set the preset to 'None', that might resolve your problem.

Photoshop Elements (PSE) has all the same processing capabilities as Lightroom. The user interface is very different, but both can do the same job, PSE does more.

You might know you are in Barry Island, but the rest of us think you are in 'God's Country', and none of us in the rest of the universe has any clue where, or if, 'God's Country' exists.

If you are proud to be a Barry Islander, why not add it to your sig, instead of using a meaningless location name?

We don't need full name, address, postal code, and bank account number. Just the country, county, or town will do.

£4 is a bargain. These are much more expensive.

But then, if you have a Pentax body to affix aforementioned lenses, you wouldn't be daft enough to buy the Nikon prime(s), would you?

But if you have a Nikon body, I believe you can fit a Pentax lens to it.

So it's a no-brainer, Nikon D3X + Pentax FA 77mm Ltd + adapter it is then.

If only I'd known, I could have got about 250 pairs . . . .

#4 for me, just gotta love that exhaust. Same engines as Concord ya know, Rolls Royce Olympus. OK, they are modified for Concord (without an 'e')

It is quire likely that the part to which you refer cannot be disassembled any further. I don't have personal experience of that particulaar lens, but I had a DA16-45mm which I bought knowing that the front element was quite badly damaged.

I tried removing the front group, and enquired of Pentax about a replacement and was told that the whole lens was essentially scrap as they would not sell an element by itself.

Each group of lenses that makes up an element is generally glued into an assembly which essentially cannot be seperated into its component part.

If the fungus you describe is indeed fungus, rather than some other issue like delamination, and it is ocurring between an element assembly, you'd best try and get a refund if possible.