Good point, Steve, and one that makes perfect sense in terms of what Chris has found to work well for him

Interesting and helpful, Chris

Once set in this way, have you found that critical focussing using the OVF is possible irrespective of the lens attached and regardless of whether AF adjust has been dialed in on the camera for each specific lens?

As will be apparent from my portfolio, much of my photography is devoted to close-focus/macro in the field and I often find myself resorting to manual focus when critical sharpness/creative DOF is critical. With every Pentax (Samsung) DSLR I have owned (GX-10, K20D, K5, and K3), all that has been necessary to ensure a high proportion of keepers when using this approach has been to correctly set the dioptre adjustment for the camera's focussing screen guide lines combined with the use of a magnifying eyepiece. With my recently acquired, and still 'testing/familiarising' K-3iii, however, this approach just does not work. Images shot with the subject 'pin-sharp' on the focussing screen prove not to have been, even when viewed at low magnification. By contrast, when using the camera's focus confirmation signal as a guide the vast majority of the resulting images have acceptable sharpness when viewed, despite them not appearing so on the OVF at the time the shutter button was depressed

Conscious that my experience might simply be one of life's strange coincidences, and not attributable to the characteristics/design of the K-3iii, I have compared the results obtained using the same lenses, subjects, distances, ISO/aperture settings and lighting and the differences are consistent, with accurate focussing using the OVF being possible on the K3 but not on its direct descendant.

Clearly, there are 'workarounds' such as learning to rely exclusively on the K-3iii's focus confirmation signals or adapting my technique and placing greater reliance on the use of live-view, but I am surprised that this should be necessary in order to enjoy the many advantages the camera offers over its predecessors.

My questions, then, are how common is my experience, should I be concerned that I might have purchased a sub-par example of the camera and, where others have found the same, what are the possible resolutions? In a thread discussing a similar problem on Pentax Forums, one suggested resolution was to 'calibrate' each lens (each day!) by using live-view to obtain critical focus and then switch to the OVF and obtain a similarly sharp virtual image on screen using the dioptre adjustment

Many thanks in anticipation of your considered thought/suggestions.

Jon

£1181 with 12 month warranty and free shipping.

'Item Condition : 9+
Lens is mint and free of marks with the exception of a very light mark to the base of the tripod foot. There is very light dust throughout the optics, this will not affect images in any way.'

link

Teetering on the edge of the abyss myself with this one 🤔

Not sure how I ended up (from new) with this filter, but it is certainly surplus to my requirements!

Collective opinion on-line derived from various sites/sources is that these filters are similar, if not identical, to their Hoya PRO-1 equivalents. I have a several filters from both Hoya and Kenko and in use have found them to be constructed to a similar high quality and to perform identically.

For those interested, in a review of 29 CPL filters conducted and published on LensTip.com the Kenko ranked 4th (link

Bar a little dust, the filter is in 'as new' condition and boxed.

Asking £15.00, excluding p&p. Will be shipped well packed and in accordance with the buyers wishes.

If found to be defective in any way the buyer will, of course, receive a full refund less the original cost of p&p.

Offers welcome, but, depending on the amount, not always given serious consideration.

Thanks for looking

Jon

Both items, taking into account their vintage, are in good/very good condition and, as far as I can ascertain, fully functional. Pricing (excluding p&p; items will be shipped in accordance with the buyer's wishes and at cost):

Body and lens (my preferred option and hence offered at a discount) - £65.00

Body only - £50.00

Lens only - £25.00

With regard to the ME Super, my description of 'fully functional' is based on inspection and testing of the camera's metering, shutter and wind-on actions. Should the buyer find the camera to be defective in actual use (i.e., when used with film), they will, on provision of the supportive evidence, have the option to negotiate a partial refund or, if preferred, receive a full refund excluding the original cost of p&p.

Please note that the lens cap, whilst remaining secure when attached, is missing one of the spring-loaded retaining clips, as is apparent from the uploaded images.

Note that offers for the camera and lens will take precedent over those for the individual items, irrespective of the order in which they are received.

I have checked prices (dealerships and 'fleabay') on line and pitched mine accordingly (comparatively low, in fact), but remain willing to negotiate within reason.

Thanks for looking

Jon

Highly thought of lens from, based on personal experience, a reputable dealership for a very reasonable, IMO, £149.00
link

More info and user reviews: link

Thanks to you both, Paul and Kris, but neither of the parties mentioned are willing to take on the challenge

Since last posting I have removed the visible fungus from the outer surface of the rear element and irradiated the lens interior with short-wave UV light in order to inhibit/prevent further growth. It does appear, however, that one or more of the internal elements have been affected, albeit lightly at this time.

Whilst remaining open to further suggestions regarding professional cleaning, if anyone fancies taking on the lens (which is otherwise in fine condition) as a project with a view to keeping it when cleaned, please don't hesitate to drop me a line.

Checking lens today prior to packing for a trip to the Norfolk coast when I observed definite signs of a fungal infection (5-6 germinated spores on internal elements; can't tell precisely which). Would appreciate members thoughts on the following possible courses of action bearing in mind that I'm disinclined to attempt disassembly and cleaning myself.

1, Have the lens professionally cleaned and serviced in the UK (recommendations and contact details appreciated)

2, Entrust to a willing forum member with the confidence/equipment/experience needed to perform the task as a service and at an agreed price.

3, Accept that unlikely to be economical to have cleaned (whether professionally or by a willing forum member) and advertise for sale (auction) making clear that the lens has fungus.

Many thanks in anticipation.

Jon

You're most welcome