I keep all my lenses in the bag rear cap upwards.
1: With the camera face down, I remove the attached lens and put it in the bag where the camera normally sits.
2: I then remove the rear cap from the lens I'm about to use, without taking it from the bag, and put it on the lens I've just removed. This part is the most difficult with Sigma caps as they need to more or less register precisely on the mount.
3: I fix the required lens to the body.

It's incredibly unlikely, but even Pentax would not say that it is totally impossible.

You haven't said which lens you have, if it's a DA* weather sealed lens, I'd say you'll have no problem.

The coast + city centres = sand + debris + very fine dust. If it's not a weather/dust sealed lens, you could get sensor contamination.

DR on my K10D is permanently disabled. I never use it and prefer to keep the battery power for taking pics.

Looks like the windmill at Brill. Image 2 gets my vote.

1: It's got the name Pentax on it.
2: It's a good teleconverter.
3: It AF enables MF lenses.

http://kmp.bdimitrov.de/teleconverters/F1.7X.html

The later 28-105 together with the 80-320 makes a good combination. I have the older FA 28-105 with power zoom, a function I've never used.

AFAIK the 80-320 wasn't supplied with a hood, it doesn't have the internal focussing mechanism and needs a round screw on hood.

I bought one similar to this.

Black 80-320mm lenses aren't very common on the second hand market. It doesn't actually bother me, black or silver, it's the glass and the opportunity that counts.

As for lens comparisons, have a look here.

For general lens info. look here.

Happy hunting.

The FA 80-320 is a larger and heavier lens than the F 35-135 lens (550g v 485g) and is not an inconspicuous lens for street pics. I have a silver one but I think they are also available in black.

Sharpness in the 80 - 100mm range is about the same I guess. The 80-320 gets a bit soft wide open at the long end. I use the 80-320mm more than the 35-135.
I'll be having a clear out soon (moving house) and some of my unused lenses will be sold. I made an inventory recently and discovered I had 8 zoom lenses covering the 135mm focal length.

Interestingly, Stan's photography pages has no comments about this lens. I like mine but like George, I don't use it much any more, but I don't agree that it's not a useful length range for digital. I just have others that are better. It equates to roughly 50-200mm, a size that seems to sell well.

EDIT: That was dumb. The 50-200 = 75-300 on digital

They don't look quite so good dead, dried up, and with a stake through 'em.

The nest is a very small one, probably its own, probably new this year. I've seen them up to about 4 - 6 inches in diameter, open cells, always facing south and at about 45 degrees to the ground (minimises the profile of the nest against the sun I guess, to keep it from cooking the larvae). These nests are quite different to the ones we had in UK which were round paper (chewed wood pulp) nests.
It's only been cropped from landscape to portrait and a bit taken from the bottom.

The front element of the lens was about 8 - 12 inches away from it.

The nest is only about 8 inches from the ground, inside a bush, and close to a wall. It was quite a windy day, I had to sit down, lean back against the wall, lean to my left at about 30 degrees from vertical. I could only hold the camera in landscape to get enough light from the flash on to it.
I really needed the ring flash for this one (stepping ring on its way).

This is the whole frame as it came from the camera, no PP whatsover.