pinhole.lu 全景 针孔相机

http://www.tortuga.lu/anglais/1_description.htm

 

TORTUGA 5,   the unique pinhole camera ...

The TORTUGA 5 is the first panoramic pinhole camera (with 5 pinholes) in the world to be produced in small series. After years of development the prototype was ready for serial production which started in summer of 2004.

TORTUGA 5 allows you to take astonishing pictures and will help you to achieve unusual artistic creations in the realm of photography.

DESCRIPTION OF THE CAMERA

In the polygonal case are 5 pinhole openings that produce 5 slightly overlapping pictures on the film.

The pinholes are created using a special drilling system to avoid light diffusion on the margins of the exposed picture.

The camera uses standard rollfilms of size 120 that can be loaded and unloaded in daylight, without the need for a darkroom.

All 5 exposures can be taken simultaniously or in sequential order.

The picture is projected onto the central cylinder. The angle covered by the pictures is 242°. The aperture openings consist of 5 pinholes with a diameter of 0.25 mm each.

Unlatching the cable shutter-release will start the exposure.

Each pinhole may be opened or closed individually by a sliding guage. As a result all 5 exposures may be taken simultaniously or one after the other.

A mechanical frame counter is built into the lid.

The camera can be fitted on all tripod sockets, 1/4" thread.

SPECIALITIES

With pinhole cameras you may expect a long exposure time (with sunlight and a 400 ISO-film approximate 2 seconds)

The built-in exposure time calculator is one of the specialities of the camera and essential as no standard light-meter is available for f/stop 256. Normally for each exposure new calculations would be necessary for satisfactory results.

The TORTUGA 5 has a built-in exposure time calculator that converts the time determined by the light-meter for the f/stop 256 and also takes account of the reciprocity failure.

FINISH

The choice of materials and the exact finish make the TORTUGA 5 an extraordinary camera and a collector's item.

The case consists of solid european plum wood, the external metal parts are made of solid polished brass.

home

Concept and hand made by LUC EWEN, photo-artist, Luxembourg

Adress: 4 rue d'Ettelbruck
L-7462 MOESDORF / MERSCH
L U X E M B O U R G - O L D   E U R O P E
email: luc.ewen@tortuga.lu

© by Luc Ewen
(sauf indications contraires ou ommissions de droits d'auteur appartenant à de tierces personnes)

 

 

 

Pinholesolutions 英国网站

http://www.pinholesolutions.co.uk/

P&L Solutions PO Box 9327 Birmingham West Midlands B17 8NY tel 0121 434 3321 ask@pinholesolutions.co.uk

Welcome to the P&L Solutions website, with the largest selection of pinhole products in the UK. Can a Mr LR Stevens please let me have his address, he lives near Gatwick. Did you see Silent Witness on BBC1 on the 14 August and the extensive use of a Docter Aspherilux Midi 125 Torch.This is still the best hand torch at its price, the quality of light is second to none, so is great for all sorts of examinations. Forensic, antiques, forgeries and rifles. WWPD has been and gone, but its not too late to go and look at all the pinhole photographs on the website at www.pinholeday.org  we in the uk entered a lot of great photos, but I think the number and quality from Japan was amazing. For advice and information or just a chat about Pinhole Photography, please phone Tim Norgate on 0121 434 3321 any evening.  We have now updated our companion gallery with all our latest photographs, please go to  www.thepinholefactory.co.uk, where we are showing our own favourite pinhole images, taken on equipment available from Pinhole Solutions and using double etched pinhole lenses. January 2006 Just added to the Pinhole Gallery are some excellent example photos taken by Chris Gatcum, Technical Writer for the Amateur Photographer magazine. See what can be achieved with the Watkins 50 pinhole camera, available from Pinhole Solutions. This way to enter the gallery... For some real inspiration you might like to take a look at Justin Quinnell's web site www.pinholephotography.org. It does show what can be done with a pinhole camera and some imagination! To see two new 5x4 Cameras go to the Pinhole Factory page.  The Amateur Photographer magazine have carried out a mini test on these cameras in the 24June Issue.   In the run up to the World Wide Pinhole Day we are offering an economical way of turning your film or digital SLR camera into a pinhole camera by fitting an etched pinhole lens to your black body cap. As this is proving so popular, we have decided to continue to offer this service.   If you want to take advantage of this opportunity, just send your body cap to us and we will fit the appropriate size pinhole lens and supply a dial calculator for just £25 and return, completed, within a week. Please make your cheque payable to P & L Solutions and send to us at PO Box 9327, Birmingham, B17 8NY PINHOLE NEWS You can now take pinhole photographs like Justin Quinnell with a smileycam pinhole camera. Just go to ebay and type in smilycam into search, great fun to use, but go in very close to your subject and use flash indoors. At the Lord Mayors Show at Cannon Hill Park, Birmingham there will be the first outing of the P & L Solutions mobile Camera Obscura. 28-29 May. We shall also be running a stall where you can buy our pinhole products. Look forward to seeing you there!   Like a cracking good read about pinhole photography and home made cameras? Then get a copy of Adventures with Pinhole and Home -Made Cameras, By John Evans. RotoVision £19.99 To order any of our products, please phone or email - Visa, Mastercard and Switch are accepted with no surcharge. Except where stated, all prices include VAT, please ask for details on delivery abroad. All trademarks are acknowledged as belonging to their respective companies. Offers subject to availability. E&OE. Specifications subject to change. © P&L Solutions 2006

Last updated 11.4.2006

自制针孔相机－Oatmeal Box Pinhole Camera燕麦片盒
Oatmeal Box Pinhole Camera
low-tech wide angle deep focus photographs
 
Pictures taken with pinhole cameras made from cardboard oatmeal boxes:
 
Kyle's pictures
photos © Kyle Hernandez
 
1、spikes  2、sound garden, negative 3、sound garden,positive
My pictures
photos © Wendy Mukluk
 
1、faux historical shot 2、at the terrace  3、out the window
(the vignetting, mostly at the tops of these images, is due to the cut out hole in the box being too small; so the images include cardboard box sides around the cutout. Don't be shy--cut a generous hole in the box!)

How to Make an Oatmeal Box Pinhole Camera
Somewhat illegible diagram to go with written instructions. (47k jpeg)
Materials:
· empty oatmeal box
· black spray paint
· scrap cardboard, or heavy black plastic (like liners from film and photographic paper packages)
· tape - masking, duct, or electricians
· glue (optional)
· scissors or matte knife
· tin foil
· needle
· darkroom or dark closet
· photographic paper or film; chemicals and equipment to process it (trays, film tank, ...)
Procedure:
Use a cylindrical cardboard box, such as an oatmeal or cornmeal container. Spray the insides of the box and lid with black paint. Hold the box and the lid up to strong light to check for holes. Patch up any holes, and reinforce any flimsy or loose seams with black tape, cardboard, etc.
If the top and bottom are thin cardboard or translucent plastic, they need to be covered with black plastic or cardboard, as well as painted. Cut a circle of plastic or cardboard an inch or two larger than the lid, then cover the lid and fold down sides of the circle so they extend down and overlap the sides of the box more than the lid did before. Fasten circle to lid with glue or tape.
Cut a hole about 4 inches square in the side of the box about halfway between top and bottom. A rectangular hole will do, because you are going to cover it with tinfoil or black plastic.
Take a piece of tinfoil about 6 inches square (enough to cover the cut out hole and have some overlap to prevent light leaking in) and poke a tiny hole in the center of it. Hold it up to light to make sure hole goes all the way through. This is your "lens". Put the tinfoil over the hole on the box and tape around the edges.
Cut a piece of bendable cardboard or heavy black plastic about 4 inches square and place over pinhole. This is the shutter and will be removed for exposure and replaced during transport and storage. Tape it to the box at the top so it can be flapped up or down, or devise something more sophisticated, such as moving the shutter up and down on cardboard runners.
In darkroom under safelight, place a piece of photographic paper in the box, making sure the emulsion (shiny, or stickier) side is facing the pinhole. Use 5"x7" paper in a 4" diameter, 6" tall box. Make sure the lid is on tight and the shutter is closed before turning on lights. You might want to secure the lid with a piece of masking tape, just in case.
Take a picture by setting the camera in a fairly stable position (a rock or beanbag on top might help). Point the pinhole in direction of subject. Lift shutter and leave open to expose paper. Exposure varies from about 30 seconds in bright sunlight to 10 minutes to an hour in heavy overcast, for most resin coated variable contrast papers. Other types of film and paper can vary widely, so try some test shots first. When exposure time is up, replace shutter and take the camera to the darkroom.
Develop film or paper according to paper manufacturer's instructions. The result, when using photographic paper, is a paper negative, which can then be contact printed to make a positive. Paper negatives can be blown up in a photocopier onto transparencies (clear plastic), or even scanned and the resulting computer file printed onto clear plastic, to make larger contact negatives.
NOTES:
Pinhole cameras can be made out of any light tight containers, such as shoe boxes, film cans, specially made containers, even hats and houses.
For many exposures, or for excursions far from the darkroom, make several pinhole cameras and carry them in a black trash bag or large cardboard box.
Black and white and color films and papers may be used.
A slower ISO/ASA speed is easier to work with, so this is a good use for outdated materials.
Color or neutral density filters, wavy glass, screens, etc, can be attached over the pinhole with tape to slow fast films and for special effects. Most of these will cut down on the light so you will need to try longer exposures.
Make multiple pinholes on one piece of tinfoil, on one camera, for overlapping images or for several images on one piece of film.
Try having the subject stand still for part of the exposure, then quickly move to another spot for another part of the exposure, to end up with several shadowy images of the same person or thing in one picture, all in one exposure. Or, have the subject move slowly for a blur effect.
Try photographing moving subjects during long exposures, or with off-camera flash.
Troubleshooting:
1. If your film or paper comes out black (all exposed), you might have a light leak. Check the box for holes and patch, tape and paint any suspicious places. Make sure the lid fits well and overlaps the sides of the box at least an inch or so. If you are using fairly fast film or paper, it might need much shorter exposures. Try cutting the exposure time in half, or less, or try using a neutral density filter taped over the pinhole. Or, if you are using outdated film or paper, it might just be all fogged. Try using it for photograms instead, or recycle the silver.
Note: If you are using directfilm or paper (such as copy film or color slide film), then all black means it was not exposed; see 2, below.
2. If your film or paper comes out blank (clear or white), the exposure probably wasn't long enough. Try longer exposures. It might turn out you need twice as long or ten times as long, or more. Also, check to make sure light can go through the pinhole and that nothing is blocking the pinhole when you make exposures. Make sure you put the paper or film in the pinhole camera with the emulsion facing the pinhole. If you put paper in backwards, with the emulsion facing the back of the box instead of facing the pinhole, it would need a much longer exposure.
Note: If you are using directfilm or paper (such as copy film or color slide film), then all clear means it was completely exposed; see 1, above.
For more information:
Instructions on making an oatmeal box camera:
Oct and Nov 1975 issues of "Popular Photography", p. 85 in Oct and p.125 in Nov issue.
Some of the many possibilities:
"Art in America", March 1994, p. 84, photography by Steven Pippin
Detailed instructions on pinhole cameras, and references:
Robert Hirsch, Exploring Color Photography, Wm C Brown Publishers, Dubuque Iowa, 1989 p. 222.
Some Links to Alt. Photo sites on Oatmeal Box Cameras and Alternative Photography main page.
 
last update December 30, 2000

什么是Pinhole
针孔相机--这个词可与让女人"闻之色变"的针孔摄像头无关。在摄影的世界里，针孔相机与LOMO一样，带来了人类所能记录的新视角的另一场革命。而这场革命，更带有童话般的传奇韵味。
"针孔相机"的使用可以追溯到1851年。万花筒的发明者，也是首位针孔相片的拍摄者大卫·布同达爵士当年可没有想到，"针孔相机"能在今天得到如此出神入化的应用。
其中有一些是关于荷兰摄影师贝塔尼（Bethany）的，如果想玩儿针孔相机，她的大名却是不可不知的。在针孔摄影的研究领域里，这位女摄影师带领爱好者或好奇者走进了一个"想象中的世界"，因为在贝塔尼看来，"一架普通的照相机离本质的图像太远，我的目标是建立一个'想象中的世界'。"
翻看贝塔尼的作品，那是一个充满梦幻味道的世界，与LOMO相较，它更随意，更柔软，不知与贝塔尼的女性身份是否有关，似乎底片上展现出来的，是针孔中童话般的映相。
玩儿针孔相机比LOMO更省钱，但是需要自己动手，你行吗？
怎么样，咱们也"贝塔尼"一回？去找一找"针孔"里属于自己的那一出童话。
链接：
针孔相机原理
针孔相机是一种古老的成像工具，它不需要镜头、反光镜或其他光学部件，而是让光线穿过一个小孔，在暗箱形成外部景物的倒像。它最早起源于19世纪达－芬奇和其他画家用来绘画的"暗箱"，也是现代照相机的前身。然而，近些年来，随着摄影界返璞归真的发展趋势和愈演愈烈的复古倾向形成，针孔相机又赢得了许多人的青睐。
针孔相机的制作
找一个空火柴盒，在宽的一面上开一个小窗口，糊上一张半透明的纸。在它的对面用针扎一个小孔。天黑以后，在针孔的近旁放一支点燃的蜡烛。你在小窗口上就会看到一个蜡烛的倒影。
还可以用一个旧的罐头筒（或一个方纸盒）来做这个实验。在罐头筒开口的一端蒙上一块半透明的塑料布，用橡皮筋把它固定好。在罐头筒的底部用小铁钉开一个小孔（直径一毫米到三毫米）。把罐头筒上的小孔对着明亮的房间或街道。在你的头与罐头筒之间，罩上一块毛毯或一件厚衣服。你在塑料布上就会看到一幅彩色电影一样的图景，只可惜是倒立的。
利用这样的装置，安上底片，就是一个针孔照相机。针孔相当于照相机的镜头。由于针孔进光量很少，拍照的时候曝光时间要长一些，所以不能用它来拍运动着的物体。但是它也有自己的优点：因为没有镜头，拍照的时候用不着对焦距，远近的景物都能照清楚，视角也比一般照相机大。在拍大型建筑物的时候，效果比有的照相机还好哩！
 关于贝塔尼的一段访问
记：在我的想法中，针孔摄影只是作为一个新奇的事物。顶多只是一个箱子和一个小的孔洞，可以这样理解吗？
贝：当然，你可以这么理解。只是一个密闭的箱子，一个极小的孔径 （针尖大小的洞），没有一片透镜；而且针孔相机很容易制造，几乎可以由任何东西制成：麦片罐头、饮料瓶和箱子等等。
记：画面中的云彩和树木枝叶给人飘渺的感觉，异常美妙。其中，是不是长时间曝光的因素？
贝：是的。针孔摄影比普通摄影的曝光时间长很多。在工作室里面拍摄模型时，一张图片曝光平均花费10 分钟；在外面明亮的日光下，曝光时间要短些，但仍然需要几秒或几十秒钟。这样，云彩显得缥缈起来，树木的枝叶也随风起舞了。当然，画面效果还要从视角、构图等方面进行控制。
记：在画面景深的控制上，针孔相机的孔径能不能代替镜头和光圈呢？
贝：曝光首先和小孔的直径大小有关。制作完美的孔径能使图片显得锐利。如果直径太大，图像会显得模糊一些。孔径的大小要依据拍摄经验和拍摄目的来确定，还要对天气和拍摄环境有所把握，没有准确的规则。
记：那么说制作孔径要非常仔细。您是怎么操作的？
贝：制作小孔的材料也很多，例如铝、箔、黄铜等。做的时候通常要在显微镜下仔细检查并且要清除粗糙的部分。控制小孔的形状和大小，可能造成惊人的结果。在不断的实验过程中，能够体会到无限可能性。
摘自《迪派影像》 杜秀波