As it says in the title this is a Centon 18-28mm zoom lens.
Very clean, functions perfectley, no issues.
Optically, cosmetically, mechanically mint.
Includes both end caps.
I beleive this lens was sold under other brand names not sure if it's a rebaged Sigma or the like.
Full frame of course.


Including postage £50.

Hi not sold anything for ages but thought I'd bung a couple of things up.

One Cosina 19mm F3.8 prime lens in absolutley excellent condition as you can see from the photos.

Mint glass near mint body. No issues at all and it has an "A" setting.
Full frame of course.

Only selling as I bought the Penatx M 20mm a few weeks ago so having two is overkill.

Comes with original caps and a very clean Hoya filter


£70 includes special delivery postage and is less than I paid for it.

I'm not sure what the fuss is with these. If I'd been offered one for £50 which considering what they go for is a bargain I'd just bung it on ebay.

I had one for a while and sold it. Ugly useles piece of kit, image quality poor compared to the lenses without it. Really massivley overated. Autofocus range and speed was poor too.

I bet that once you's had it for a month you'll sell it.

Hi All, I swapped the screens over and it does seem to be that the SC1 is brigter in both bodies. I suspected the pentaprism initially as my old MX has seen a lot of use and the other one was a bit newer due to having a higher serial number.I'd forgotten about the mirror so that's possible I'll have a look.

I only bothered reading the first post, thought it was pretty pointless so thought I could add to it without having to read the middle seven pages in the spirit of things. I was just holding an MX, is that too camera related fro this thread ?

Lost screw from Pentax MX that held the winder plastic on.
Bought 2nd hand broken MX from shop to replace screw.
Noticed when comparing 20mm Cosina & 20mm Pentax lenses that one viewfinder was brighter than the other. Swapped lenses over and the same camera was still darker so it wasn't the lenses but two identical ? MX cameras, puzzling.
Noted that the brighter one has an SC1 screen the darker one has an SC21 screen that was a replacement about 8 years ago.
Now according to the Dimitrov Pentax site the 21 should just be a later more up to date version of the 1 so it's darker ? The 21 is also I believe standard issue on the LX.
So the old screen is brighter than the new one ?
Comments please.

The elderly Nikon D300 has possibly the best sports autofocus of any semi pro camera ever made so if your K5 isn't quite as good I wouldn't beat yourself up. It's also big and heavy and only 12MP with no video or weather sealing etc. Horses for courses.

Anyway sometimes it's easier to manual focus. I sometimes use an old Tamron 500mm mirror lens and it's very fast to focus and I do occasionally get the odd buzzard or seagull in focus without much effort. I gave the lens away though as it was a bit rubbish optically.

If it's just manual focus manual everything and small then I'd agree with most folks and vote for the MX. I've been using one that I bought 2nd hand in 1984 and it's never let me down. I did have it serviced once as the rubber had started to perish but that happens to all old cameras.

The best autofocus Pentax I ever had was the MZ5 which was very small, light and the pictures came out well exposed and in focus. This replaced my MX in 1996 when it came out.

The "nicest" autofocus camera I ever had was the Z1 / Z1P great spec beautifull to hold but inaccurate auto focus on both of mine.

Have never tried one but the MZ-M is small and light too.

In automatic mode the camera reads the light reflected off the film plane. Assuming you're trying this without film in the camera and the back closed then the meter will be reading what's reflected off of the back which is black, certainley a lot darker than film which is usually a kind of yellowish tan colour. Therefore it will over expose.

If I could find my book on the LX ( which I can't at the moment ) it says that Pentax did a lot of testing regarding the reflectivity of all different kinds of film to come to the settings they have done.

Hi I've got one that's like new with box. I'm not sure I want to sell it but make me an offer or do you have something to swap for it, (I'm looking for M series lenses, 28mm or 135mm etc ) Part exchange maybe.