The P series were made by Cosina. Confirmed by several sites including this site by one of the greatest Pentax photographers.... Have a look through his works while your at it.....

http://bong.manayon.net/2010/11/cosina-ct1g.html

Gallery
http://www.manayon.net/bong/index.html

Also Pentax Photogallery
http://www.pentaxphotogallery.com/artists/bongmanayon

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There was one by Kenko, but most people just remove the glass from a TC or an old zoom lens.

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Don't include "stuck on camera" in your ebay search

Should show about 217 M42 extension tubes including a nice 4 piece Genuine Yashica set for £9.99

Nice set from Schacht one of my favourite West German lens makers for £26.65 posted
http://www.ebay.co.uk/itm/Schacht-M42-Auto-extension-tubes-german-made-/23213837...

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Samsung cards are a lot tougher......

http://www.samsung.com/uk/consumer/memory-storage/memory-cards/sd/MB-SD64D/EU


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Comparing JPEG output from different makes of cameras is as daft as pixel peeping them

Ricehigh's settings for the K-5

http://ricehigh.blogspot.com/2013/09/my-best-optimal-custom-image-colour.html

Sharpness should be set quite high +4 or +5

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I read somewhere that Adobe always write over maker data with their junk

Edit: Something about here (from 2010 to 2016)

https://forums.adobe.com/thread/743437
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Very easy to cheat on this one! ...... Just put a 2X TC on your lens and photograph a normal moon I call it a Beaver Moon

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My old Aunt Bessie used to swear by Kodak 126 Instamatics she used to say the pictures were brilliant.

Qualified technical reviews using scientific equipment to measure vibrations etc. are much more reliable.

I'm a bit pissed off that my £200+ Novoflex Magic Ball 50 isn't rated as highly as 3 ball heads costing below £100 I also have the Novoflex 5 which isn't included, but probably gets beaten as well.

The Tiltall BH-07 (90%) even beats mega expensive stuff like Arca Swiss No wonder they used to be marketed by Leica

http://www.traumflieger.de/desktop/ballhead/ballheads2.php

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Considering what you pay for cameras and lenses it's silly to use cheap ball heads when you can now buy top stuff from Tiltall, Feisol or Sirui for £60 to £110. You can even buy a tripod from Amazon for £90 that includes a £70 Sirui C-10X head

REVIEW SIRUI C-10X

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The Voigtlander Nokton 58mm 1.4 SL2 is a copy of the Topcor lens .

http://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/43939-voigtland...

TEST
https://www.ephotozine.com/article/voigtlander-nokton-58mm-f-1-4-sl-ii-lens-revi...

Your Bessaflex looks very interesting.

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