All Forum Comments
Comment by d-dixon posted on Rationalising my kit, so FS the following at 11/04/2019 - 18:30
A manic disassembly & drying session followed - the battery needed recharging but after a few days all worked as it should. I eventually sold on the K7, but am still using the 18-55 - after removing the water-marks from each lens group.
David
Comment by d-dixon posted on Ever had the chance to test out just how good the WR is ? at 22/01/2016 - 18:07
Komura converter now £10 inc. UK postage.
Comment by d-dixon posted on Two 2 x teleconverters (Telemore 7-element PK; Teleplus 4-element PKA) at 01/08/2015 - 17:27
1. Komura Telemore95 II 7.K.M.C. (for PK). This has an excellent reputation. Fair cosmetic condition (a previous owner has for some reason made some marks on the rear mount) and good optical condition (there is a small fine scratch on the rear element). PK mount so no aperture info available. £10 +postage.
2. Teleplus MC4 2x KAX. Excellent cosmetic and optical condition. PKA mount, so full aperture reporting and control with KA and later lenses. £15 + postage.
Both come with front and rear caps.
Testing each paired with a 100 mm macro lens gave similar image quality to my eye (see below). Some CA apparent, but that's also present with just the lens, so not due to the TCs! High contrast at f/8; a little less wide open at f/2.8 with this tricky subject.
Teleplus MC4:


Teleplus MC4 with 100 mm, f/8:

Teleplus MC4 with 100 mm, f/2.8:

Telemore95:


Telemore95 with 100 mm, f/8:

Telemore95 with 100 mm, f/2.8:

Comment by d-dixon posted on Two 2 x teleconverters (Telemore 7-element PK; Teleplus 4-element PKA) at 21/07/2015 - 20:32
David, you're the first so you've got the 35-80. I'll message you when I've checked how much the postage will be.
David
Comment by d-dixon posted on More free stuff at 05/12/2014 - 18:02
I'd be very grateful for the 35-80, if still available?
Cheers,
David
Comment by d-dixon posted on More free stuff at 28/11/2014 - 16:22
Comment by d-dixon posted on FS: Tamron SP 90mm macro, 1:1 adapter, P/KA adaptall2. Case, caps, boxed. at 21/09/2014 - 19:18
Would you sell without the KA adaptor???
ellepi - PM replied,
David
Comment by d-dixon posted on FS: Tamron SP 90mm macro, 1:1 adapter, P/KA adaptall2. Case, caps, boxed. at 17/09/2014 - 22:03
David
Comment by d-dixon posted on FS: Tamron SP 90mm macro, 1:1 adapter, P/KA adaptall2. Case, caps, boxed. at 17/09/2014 - 19:40

2.5 s exposure, K-5, uncropped.
Here's the setup:


From the bottom up:
- A C. Baker 10 x achromat microscope objective (= 16 mm focal length), working distance ~ 2-3 mm. No aperture, so wide open. Came as part of a £50 microscope, so say £5?
- A Pentax Adapter K for microscope lens (can't remember where that came from).
- A Female K-mount, bodged from a donor teleconverter and used to replace the original M42 mount on:
- Pentax Auto Bellows, M42 mount. £18 (had been horribly abused in a past life).
- T2 adapter to PK, attached to what's left of the original bellows M42 mount.
Light source is a stereo microscope lamp (free, recovered from skip), with light softened by bouncing off 1 sheet toilet paper.
Shutter triggered with a Pentax IR remote in mirror-up mode.
Camera operator perched carefully on a chair to minimise changes in foot pressure giving rise to tripod movement via carpet.
My next attempt will be as above, but with a 40 x microscope objective (4 mm focal length) - working distance will be < 1 mm so lighting is going to be an issue ...
David
Comment by d-dixon posted on Penny macro contest - revisited at 15/09/2014 - 21:45


10-20 on the way to David
David