Yeah I might indeed be tempting fate that's why I said I'm sure I get some horrid faces

I once had dropped the camera in the mud.. well not drop but I lost my balance and it was covered in mud after that... the only quick fix was to resine it so did that carefully hoping that the seals would last and they did. I know one Nikon user staring in amazement when i put the camera under the tap

After that I got more confident in the sealing and I've no problems now putting it under the tap.
Already done it a couple of times and the very very diluted detergent is great to get the grease/fat from your hands of your camera and get it really clean, also work great on the front element of your lens. Since the water is running and I don't put it underwater there is no pressure on the seals.

It surely is not for the faint hearted or the unlucky ones and without any risks

I would also go the extra mile for the DFA 100mm WR, it's better build and the manual focus is great.

The lack of limiter isn't a problem with the pentax because you've the quick-shift. IF you see the focus over shoot, you simply stop and place the focus close to the subject and the AF will mostly snap on instantly then.
For macro work you wouldn't use AF so no problems at all there.

As for image quality basically all macro lenses are superb, you can't go wrong with that. But it's how they handle that make a Macro lens better than another.

Yes you hear the word lens more but when you look at an internet shop they almost all call it objectieven and not lenzen but I've never found an English shop that calls them objectives and i know from myself that I use the word quite often as well depending on how scientific I want to sound.

I think you've nailed it

Your GX20 has sealing... I simply resined my K10D with the DA*50-135 attach under the tap ^^;

Used one very tiny drop of washing soap for your dishes and that worked well, don't know if that's the recommend way... I already see the horrid faces before me
For the non WR lenses I use a microfiber cloth and the same dish water and make sure the cloth is only mildly moist.
But like I said probably not the way to clean them ^^;

Was the SR ready? If you press to soon while it's getting set to be ready that might cause movement.

Thank you Hefty I'm going to use the word objective from now on, it sounds far more interesting than lens.

Yes Father Ted but since the word objective comes from his ability to "picture" an object, shouldn't we call it a subjective if it pictures a subject rather than an objective?

Father Ted, objective comes from the ability to "picture" an object there is no front or back involved.

However if we talk about models we talk about subjects so can't we call the objective a subjective then?

Hefty a thought occur to me, camera lenses are designed to be objectives so how can they not be an objective if they aren't in use or is it really that strict?

I've no idea Father Ted

Doesn't have to be if they move freely, it's a simply spring that retracts the blades to their resting position.