I'm rapidly losing faith in any lens tests done with Imatest software.

The test done on the Pentax 16-45mm f/4 SMC DA ED AL shows the edge
almost as good as the centre at f/8 and 16mm link

The one for the Kit Lens actually show the edge better than the centre.
link

Later tests show poor edge performance for LTD lenses.

The DxO site actually has Zeiss lenses performing poorly?
(post link later).

Nice video Don, I don't normally like effects, but the album
to video effect is quite good.

Won't let me vote, probably because I'm not registered.
Sorry about that. Seems pointless if people can see the
video and not vote.

That's disgraceful if they are. We often hear UK propaganda
about China filtering sites

Excellent professional looking job. I'm sure that
they are well pleased. The only thing that looked
odd was showing the cake after cutting it?

The Zeiss ZM-Biogon 25mm ƒ/2.8 T* lens was supposed to be the
sharpest link

Most online retailers have a clause that says a contract does not exist until they dispatch the goods.... so refunds should be possible?

I wouldn't pay too much attention to the aerial reflector John. It's picking up reflections off the clouds which are changing, so it will be different.

I've just done the test again with a Pentax_A 50mm f/1.4 and that was worse. I even had to refocus manually on the top right hand corner of the viewfinder, because of the field curvature of the f/1.4. The final result was worse than the f/1.7 which I expected.

I'll have to find a decent lattice railway bridge to check the Kit lens out a bit better.

I've already sold the Pentax 12-24mm because the Sigma
was identical in performance

I've only got a Sigma 10-20mm that goes to 18mm and to be honest the Kit lens would eat it for breakfast

If you want a good lens at f/1.7 ......... get a Yashica ..... unbeatable!