Superb shots, I like the first best, because of the diffused lighting.

Over the years I've done careful comparison tests (mostly at f/8 ) between the 18-55mm Kit Lens and various 24 - 28mm primes and non of the primes even come close. I sold my Pentax_A 24mm f/2.8 as a result and might as well sell the Pentax_A 28mm f/2.8 which is a league below the 24mm anyway.
Other primes were Vivitar, Sigma, Tamron, Ensinor (Good) etc.

It's mostly the edges that let the primes down, the Kit Lens is good. I prefer NO SR on wide angles.

From online test sites it seems that the 16-45mm could be sharper than the 18-55mm from 16-24mm, but it has some PF.

I'd get one of these! link

Most used Pentax_A 50mm f/1.7

Least used Pentax_A 50mm f/1.7

I've got TWO!!

Your the one that's been driving up the prices Matt

Usually if someone does a search and finds a site that says
"that's a good lens" (even though it's junk ), they go daft
with their bids

Any German junk needs a top up mortgage these days

Good find Charlotte

To paste the link properly:
Copy the ebay URL as you did above.
Put mouse cursor where you want the link in this box.
Click Link on the toolbar below.
Press DEL on the PC to clear the box.
Press CTRL+V or paste to insert the URL.
Click OK

If it's not correct when you do a Preview just delete
it and start again.

Here's the lens link:link

Leitax do a converter for the Contax (probably AE mount) for about 58 Euros. I don't really want a 50mm, but an 85mm would be worth converting. link

A Contax 85mm f/1.4 sold recently on ebay for £360 link

Pack up your troubles in an old kit bag........

I usually find when testing by photographing banknotes etc.
3 shots of every 4 are often out at say f/2. The sharpest is
often the one with the biggest file size MF is usually
the most reliable. I've never tried live view. I do use a 2x
Refconverter though. The Eye-Fi card also comes in handy,
because I can see the shot straight away.

I've posted this link before which explains the problems with
focus on lens tests:

Focus Fallibility: Lens Test Fallacies
http://www.slrgear.com/articles/focus/focus.htm
-

The same site has a:
Contax 139 c/w 50mm f1.7 Zeiss Planar T* lens for £100
The lens alone must be worth that?

link