Thursday, December 31, 2015

Pinhole Cameras construction

Pinhole Cameras construction


8 Banners vs. Zero image

Camera Obscura

Camera Builders




8 Banners vs. Zero image


The Pinhole Camera Makers


Making the Traditional Wet Plate Camera









The ONDU Sliding Box Pinhole camera

ONDU 135 pocket pinhole camera - Gadgetsin




About Pinhole Cameras — Jeff McConnell photography

One of the distinguishing characteristics of many pinhole photographs is that they are brighter in the center, and darker at the corners – this “fall-off” can be very pronounced if the camera has a short “focal length” (distance from pinhole to film) relative to the negative size. One way to counteract this uneven exposure is to have the film follow a curved path – the closer the path gets to a circle with the pinhole at the center, the more even the exposure should be. But: the resulting images can be quite distorted. When I started designing my camera I wanted to minimize distortion, but I also wanted to minimize fall-off. I settled on a curved film plane, with the pinhole set one third of the way into the central radius of the arc, like this...





Mamiya C330

Mamiyaflex C2




Au premier plan - Reality SoSubtle 4×5







au premier plan.fr   blog  

RealitySoSubtle




Zero 612 Basic

Zero image


Zero 2000 is a super-wide angle camera with a focal length of 25mm and it accepts 120


















camerapedia wikia  Zero 2000


Material: Teak Wood
Weight: 250 gm
Pinhole Size: 0.18mm
Zone Plate (Optional): 25mm with 9 zones
Focal Length: 1" (25mm)
Tripod socket: 1/4" Thread
Angle of View: 130 deg. diagonally
Dimension: 5 1/4" (L) x 1 3/4" (D) x 3 1/4"(H) including all knobs
Film Stop: F/138 for pinhole, F/47.6 for zone plate
Film Format: 120 Roll film in 6 x 6 format






Pinhole Photography: 10 Paper Cameras For Photograph Purists


Pinhole Camera by Corbis Readymech - woohome.com


This Book Has a Functioning Pinhole Camera Inside




Diploid Pinhole Camera DIY





Pinhole Diffraction - Department of Physics



A laser beam passes though a pinhole in aluminum foil, producing a circular diffraction pattern.
(Disc 23-7, 16 sec.)

greatians.com - particles-20wave





Skink laser drilled pinhole aperture 0.4mm very thin stainless steel substrate  
skinkphoto  US $22.95



0.3 mm Laser drilled pinhole for Skink Pinhole Pancake (Canon, Nikon, Pentax, Olympus)






















Precision Pinholes
























RealitySosubtle 4x5 Pinhole Camera from James Guerin on Vimeo.





History of the pinhole camera:
Gambattista della Porta    In 1593, Gambattista della Porta (1535-1615) described a process for faithfully reproducing engravings in his book Natural Magic. The apparatus used is a pinhole camera or camera obscura, which in Latin means "dark room."


Camera; PINHOLE CAMERAS CAN GIVE SURPRISING RESULTS 
by Bruce Habegger

Country Scientist: Digital Pinhole Photography




"Sutton Panoramic" camera with globular lens, c. 1857, including a Silvy roll-holder back
"Sutton Panoramic" camera with globular lens, c. 1857,
including a Silvy roll-holder back and an water filled integral spirit level.


ML camera


The Mona Lisa Pinhole-Zoneplate Field Camera, designed and built by the Renners at pinholeresource.com, shown here as it appears both opened and closed. This came out in 2003, and disappeared from their offerings in 2004 - I can find no one else who has this camera, makes me feel very lonely. :)

You can extend it to 4 different focal lengths (150mm, 120mm, 75mm and 40mm), and there is a corresponding pinhole and a zone plate for each, accessed along a sliding piece of wood on the front (no zoneplate for the 40mm setting). Takes 4x5 film holders on the back. While I have picked up some 4x5 film holders, I'm no where near ready to process sheet film or photo paper cut to fit, so I also have a Graflok back which I hope someday to attach to the camera so I can use a number of different film adapters with it (including Polaroid packfilm and 120 film). Only problem is to do that I have to work up the nerve to hack off the wooden bits glued to the back in order to lay the Graflok flush against the back of the camera - I haven't gotten up the courage yet to cut into the thing, I'm worried I'll screw it up...




A Slovenian designer 
has created a range of hand crafted pinhole cameras carved out of chestnut and maple wood and held together using just magnets.
Elvis Halilovic saws a piece of wood for making a wooden pinhole camera at the Ondu design and fabrication studio in Lopatnik village near Velenje.




ONDU Unveils Its Mark II Line of Handcrafted Pinhole Cameras with Improvements


The remarkable pinhole cameras hand carved from a maple tree and held together with magnets

ONDU - HANDCRAFTED PINHOLE CAMERAS

FAUX ondu



1000 ideas pinhole cameras



Step 5: Pinhole Camera Design, Part III






OUGD401 From Theory Into Practice - Research




BUILD A 35MM PANORAMIC PINHOLE CAMERA

35mm Panoramic Pinhole Camera - www.diyphotography.net

pinhole_sketch--35mm---www.diyphotography.net

THE BATTLEFIELD PINHOLE CAMERA - 3x35mm


P612v5.0 – Curved film plane 6×12 pinhole camera





Pinhole    Pinhole Photography - History, Images, Cameras, Formulas

According to Renner (1995: 117) most formulas used today are of the following general form:
r = sqrt (l * c * f)
r = pinhole radius
l = wavelength of light
c = a constant, usually a decimal fraction between 0.5 and 1
f = focal length
Platt (1989:73) provides the following optimal pinhole formula:
d x d = f/k, where k is a constant of approx. 1300
Dobson (1991) provides this formula:
d = sqrt (f)/25
Lord Rayleigh's formula and those published by Platt and Dobson all give somewhat different results. Andrew Davidhazy of the Rochester Institute of Technology lists several other formulas in a posting on the net.
Four, slightly different, charts of optimal pinhole diameters are reproduced below. Some of the charts have been simplified by leaving out references to needle numbers. Holter's chart, published in Norwegian, has been translated by me. Platt's chart differs from the others by consistently giving smaller apertures.

Bogre (1988)

Focal lengthBest aperture diameterEquivalent f-stopExposure factor for f/22
50 mm0.29 mmf/17463 x
75 mm0.35 mmf/21394 x
100 mm0.41 mmf/246125 x
125 mm0.45 mmf/275157 x
150 mm0.50 mmf/203188 x
200 mm0.57 mmf/348250 x
250 mm0.64 mmf/389313 x
300 mm0.70 mmf/426376 x

Platt (1989)

Focal length (mm)Pinhole diameter (mm)f-stop
1300.33380
2100.40500
2600.46550
3200.50650
4200.58690
5500.66800
6500.74930
7500.79960
10000.911120

Holter (1990)

Focal length (mm)Pinhole diameter (mm)f-stopExposure factor for f/16
100.147020
200.2010040
300.2412560
400.2814080
500.31160100
600.34180125
700.37190140
800.40200160
900.42214180
1000.45220190
1500.54280300
2000.63318400
2500.70360500
3000.78380560
3500.84418700
4000.89450800

Fuller (1992)



It should be borne in mind that for most purposes the diameter is not really critical, as the different values in the charts above may demonstrate.








Tips for the Construction of a Camera Obscura - René Smets

American walnut pinhole camera 



René Smets 
American walnut pinhole camera 
2003 
  
Colour image 
Provided by the artist - René Smets 

LL/45977 
  
Negative size 6x17 cm
focus = 75 mm
F = 250
Made from American walnut
Film detection with LED
With timer and two viewers


Homemade Pinhole - flickr









Medium format bamboo pinhole camera with 3 frame format: 6x6, 6x9, 6x12

120 film
frame: 60x60, 60x90, 60x120 mm.
aperture: f/123
focal lenght: 37 mm.
pinhole size: ⌀0.3 mm.
standard tripod mount.

dimensions: 205x100x65 mm.




Chamaeleon Panorama 618 with exchangable lens boards - skinkpinhole - Juergen Kollmorgen



initially I designed this pinhole / lens hybrid panoramic camera for myself. It has exchangeable lens boards and produces panoramic photographs in 6x18 cm format. The curved film-plane helps to minimize vignetting (light fall-off). It's adjustable film-chamber allows the use of different pancake-style wide-angle lenses, like Schneider Angulon 90mm or Symmar 100mm. Some limited edition collectors' cameras will be available in ebay soon...                

http://skinkpinhole.com




Swing lens panoramic camera

HOW TO BUILD A PANORAMIC CAMERA

Giorgio Carboni, November 2002
Translation edited by Charles and Mary Perry


In this type of camera, the vertical field is small in relation to the horizontal one. This is justified because subjects for panoramic shots, especially if they are distant, are usually arranged along the horizon. But what if your shot is a cityscape with tall buildings where a greater vertical field would be useful? To face this problem, this camera's objective has been mounted with an upward "shift", allowing the camera to shoot a wider field in this direction (figure 10).
This shift is also advantageous when shooting a subject from a high position, because by turning the camera upside-down, you will be able to take a wider angle downward.
The shift of the objective is 11 mm and allows the camera to obtain an angle of 28 degrees above the line of the horizon and 13 degrees 30 minutes below the horizon for a total of 41 degrees 30 minutes. You must be sure that the objective you want to use has enough area of coverage to avoid vignetting. If the objective won't shift that much without vignetting then you must reduce or do away with shift, or obtain another objective. If you do not understand this business of "shifting" the lens and "vignetting" then I recommend you do some research on those subjects in relation to view cameras.






Camera opened to show the film. The feeding direction is from left to right. The two little central columns do not have any role in the arrangement of the film and serve only to join the upper and the lower plates and to keep them at distance.



SOME PANORAMIC PICTURES



source

La mia prima fotocamera stenopeica autocostruita, usa pellicola 120 nel formato 6x6cm, ha una "focale" di 30mm con un foro diametro 0,2mm su lamina da 0,02mm, l'otturatore ha una lama a molla a 2 posizioni.
My first homemade pinhole camera, it use a 120 film in 6x6cm size, 30mm "focal" with 0,2mm hole in 0,02mm sheet, 2 position spring shutter.






DÍRKOVÁ KOMORA  -  Jakub Feranec




I Adore, the 6x17 camera



























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