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Pinhole Cameras
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BKSPicture



Level 2

Joined: 22 Aug 2012
Posts: 271
Location: Sverige
PostPosted: Wed Aug 22, 2012 1:48 pm    Post subject: Reply with quote
vilva wrote:
Just to show what kind of image quality can be obtained with a 6x6 pinhole camera, good film (Fuji Neopan 100 Acros) and some post-processing, I increased the image size of my old Tallinn pinhole photos at http://galactinus.net/vilva/pinhole/tallinn_ph.html from 730 pixel wide to 960 pixel wide. The negatives were scanned at 2400 dpi with an Epson 4990 to yield about 28 Mpixel originals, which I down-sampled and sharpened. I also prepared 1200 pixel wide versions of three photos to show the potential even more clearly:

http://galactinus.net/vilva/pinhole/tallinn_ph_files/tallinn04_1200.jpg
http://galactinus.net/vilva/pinhole/tallinn_ph_files/tallinn07_1200.jpg
http://galactinus.net/vilva/pinhole/tallinn_ph_files/tallinn09_1200.jpg

These are rather wide angle shots, the nominal "focal length" is 25 mm, the real one is probably nearer to 28mm, i.e. about half of the frame width and height (56 mm x 56 mm). The FOV corresponds roughly to a photo taken with a 11-12mm lens on a full-frame 35 mm body and cropped to a square. The perspective is correct if the photos are viewed from a distance of half the image width.

Veijo


Awesome shots!
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Homepage: http://www.bkspicture.com/
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Blog: http://www.blog.bkspicture.com/
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BKSPicture



Level 2

Joined: 22 Aug 2012
Posts: 271
Location: Sverige
PostPosted: Wed Aug 22, 2012 2:03 pm    Post subject: Reply with quote
I rebuild a old 6x6 medium format to a super wide pinhole camera.



Hers one of my best images from this camera

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Homepage: http://www.bkspicture.com/
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Blog: http://www.blog.bkspicture.com/
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Eugen Mezei



Level 1

Joined: 17 May 2008
Posts: 176
PostPosted: Sun Sep 09, 2012 1:56 pm    Post subject: Reply with quote
What I never managed with piholes was to avoid reflexion from the material the hole was drilled in. It is always a metal foil, so it will reflect light.
Anyone has an idea how to get the material I drill the hole in black?
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berraneck



Level 3

Joined: 24 May 2009
Posts: 924
Location: prague, czech republic
PostPosted: Sun Sep 09, 2012 3:31 pm    Post subject: Reply with quote
galvanize it:)
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looking for Olympus XA-4! drop me a message if you know about one Wink thanks!

equipment doesn´t count, good photographs do
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hemmo



Level 2

Joined: 30 Mar 2010
Posts: 266
Location: Helsinki, Finland
Supporting Member
Expire: 2013-12-20
PostPosted: Thu Mar 14, 2013 10:11 am    Post subject: Reply with quote
My new Beauty, Vermeer 66 (de luxe version)Very Happy



This is the de luxe version from his Vermeer 66 pinhole camera model, because he made from my wishes this model also zone plate camera with his replaceable adapter system. So with this I can swap from pinhole to zone plate, or vice versa at any time without unwanted exposure.

This Vermeer 66 uses 120-film and makes 6x6 pics.
Came with two adapters:
Pinhole (F/170) and Zone Plate (15 clear zones) F/50.
Have to say that this beauty is really exellent example of handicraft and one unique piece of art for the pinhole cameras. Very Happy

I've taken just few exposure time test pics with it and this zone plate test pic has been maybe the best as far.

'Kissing Couple'
Zone Plate. Fomapan 100. Rodinal 8,5'.
41sec. exposure time. PP: straightened, cropped and some curves.


Vermeer pinhole site: http://www.cbruno.hostfast.eu//strona_eng/index.html
_________________
Large: Pony Premo Model No:4,
Medium: Yashica Mat 124, Agfa Isolette lll, Voigtlander Perkeo 1, Kodak Folding Pocket Brownie 2B, Vermeer 66, Holga 120N, Halina-Prefect,
35mm: Yashica FR, Mamiya/Sekor 1000 DTL.
Digital: Canon EOS 7D.
Lenses: CZ Jena Flektogon 2.4/35, CZ Planar 1.4/50, Pentacon 3.5/30, Meyer Görlitz Trioplan 2.9/50, Meyer Gorlitz Primoplan 1.5/58, Meyer-Optik Trioplan 2.8/100, Industar 50-2 3.5/50, black and 'silver' Helios 44-2 2/58, Cyclop 1.5/85, Jupiter-9 2/85,
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