Did you decide to keep it ?

Sorry, I screwed up and now can't edit the post.

Link to manuals for all Pentax DSLR bodies and software here.

Under the first section "Free Download of Owner's Manuals", Select 'Cameras' in the first box, and 'Digital SLR's' in the second, then hit go.

All Pentax A series and later (F, FA, D-FA, DA, and their * variants) lenses work as intended on Pentax DSLR's. Only the Pre-A series (M & K) have exposure issues on some bodies.

If it's got an 'A' on the aperture ring, or no aperture ring at all, it'll work.

If/when Pentax bring out a FF body any time soon (next 18 months or so) I think we will see a revival of the FA series of lenses, probably called D-FA as per the Macro lenses.

With regard to the prices on ebay, the Pentax 50mm lenses are probably superior to the other makes you mention so to my mind, in mint condition they could be worth it.

One trick I read of to kill the fungus is to leave it exposed to the sun (UV) for a while. It'll get hot, which might cause the greases inside to liquify so be careful. Leave the aperture wide open so that the black iris blades don't get heated directly by the sun.

The fungus is not removed but this procedure is supposed to kill it, then it appears to shrink, causing less of a problem to images.

Also, there are different types of fungus and it's not necessarily the fungus itself that can destroy a lens, more the secretions of the fungus, some of which are acid and 'eat' the coatings and effectively etch the glass.

Arguably the most common cause of fungal infestation in older lenses is the practice of supplying them with leather cases, in which they are stored. Leather harbours fungus spores.

Lenses should be stored in cool dry, and airy locations when not in use for a while.

De nada.

In the Pentax ranges of lenses, old + wide = expensive. Even a 20mm lens, which would be considered wide on a FF film camera, equals 30mm on a DSLR. Not very wide.

By far your best option is a modern zoom. Consider the Sigma 10-20mm, Pentax DA 10-17mm Fisheye (if you like the fisheye perspective), or the DA 12-24mm.

If I copy the URL into IE7 I can see the images. Firefox 3.01, no go, message as above.

manual here .

Your camera does not support TTL mode, so neither will the flash when its fitted to it. It needs to be fitted to a TTL capable camera for TTL to be available for selection.

The *istD supports TTL, and I think the *istDS does also. They are the only Pentax DSLR's that do.

The AF360FGZ flash has been around longer than any Pentax DSLR, it was designed for use with the MZ-S film camera. Read Page 14 of the flash manual.