But he's the 2nd biggest seller Maybe he buys off himself

He even has a load of Samsung lenses, didn't know there were that
many in the country

-

Never bought anything, but I'd love to know where
he gets all his Pentax lenses from

All Ebay and Amazon sellers have University Degrees in how to correctly describe filter rings........ I don't think!

Depends if you are at the foot of the ladder or the top

They seem to call them both ways so it's up to
you to make sure

I'd just look for 62 mm filter on 49 mm lens in the
description. You might have to do it with two.... 62 to 58
and 58 to 49

Looking at the specs on Dimitrov for the 18-135mm
It has a close focus of 400mm and a magnification at 135mm of 0.24x

A normal 135mm macro would produce 1:1 (1x) at 4f =540mm
so the 18-135mm isn't anything like 135mm at 400mm

A quick calc shows it to be about 62mm FL at 400mm

They look OK the 18-135mm is an IF lens and will have a wider
FOV due to the FL being shorter than indicated.

I forgot to mention:

Focusing is a big problem on tests, the adjustment for MF is too coarse and the 3" LCD hasn't got enough resolution. The simplest way is to take at least 4 shots and pick the best using a viewer that allows 1:1 comparisons.

A better way is to use a focusing rack, lock the lens focus with a piece of masking tape after focusing manually using LV. Take shots at 20mm and 40mm either side of the zero position as well as the zero position.

If you want to be a bit more precise find the best shot and then repeat +/- 10mm either side of it.

Lens FL's refer to infinity focus. They DO change at closer distances.
Internal focus lenses can change by a massive amount.

For lens testing I usually put two small (50mm long) pieces of electrical tape 500mm apart horizontally or two blobs of Blu-Tak and then move the camera backwards and forwards until the tape is just visible at the edge of the viewfinder. Repeat for the other lenses.

A few postage stamps or non-uk banknotes, wrist watch, piece of fabric will do for the test.

In the case of the 600mm (which I'm not interested in, but if I were )the only way I would personally buy it is to go round to the sellers house with the cash

Sellers need to be careful of accepting Paypal and then allowing collection. There have been quite a few cases of people later claiming from Paypal that they haven't received the item.

That's the only point I'm making..... I'm surprised ebay haven't got a bot to spot it. It's a well known scammers trick and ebay themselves have been caught out by it many times.

The request for a cheque is in the listing if you bother to read it.
Made payable to J. Smith would probably be fine.