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Setup of Ploum
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dolmadis



Joined: 07 Dec 2011
Posts: 627
Location: UK

PostPosted: Sun Jan 17, 2016 2:02 pm    Post subject: Reply with quote

Thanks.

I am not sure that I asked one of my questions properly. Let me try again. Thank you for your patience with me.

I think you have answered this but may be I do not understand the information you have given.

If I am using a 4x infinity objective where would you place the Raynox in your system please?

Regards


John
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ploum



Joined: 18 Oct 2014
Posts: 168

PostPosted: Sun Jan 17, 2016 2:10 pm    Post subject: Reply with quote

If it's a raynox 250 (125 mm of focal => 125 mm between retro lens tube and the sensor. In my system it's inside of 58 mm tube with 3 cm of 42 mm tube.



If it's a raynox 150 (205 mm) i use a tube 58 mm for a more long tube (4 cm) without 42 mm tube. And i adjust with manfrotto for 1 cm more.

125 mm + 3 + 4 + 1 = 205 mm.....


Normally 16 cm between end of tube 58 mm without additonnal tube 58 mm and sensor. 10 cm for tube 58 mm + 1 cm for air + 5 cm mecanical adaptation nex-M42 + depht of camera.

16 cm - 3 cm = 130 mm (125 mm fo drc 250)

16 cm + 4 cm + 1 cm = 210 mm (205 mm for dcr 150).
_________________
I work with a manfrotto 454 but uncommon system. No limitation, no motorisation, good precision.
Objective : rodagon 135 mm, BW APO 2x, Compon S 80 mm, nikon CFI 4x, APO componon 40 mm, componon 28 mm, APO plan 10x, Mitutoyo APO 10x, BW APO SLWD 20x. Nikon CF EPI 10x, APO SEIWA 20x, MACRO ZUIKO 35 mm, nikon MPLAN ELWD 0.5 40x, NIKON CFI PF 10x.
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dolmadis



Joined: 07 Dec 2011
Posts: 627
Location: UK

PostPosted: Sun Jan 17, 2016 2:15 pm    Post subject: Reply with quote

Thank you very much for answering all of my naive questions together with your patience.

I have some parts to acquire and then I will have some fun to experiment with your system.

Kind Regards

John
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