Archive for the ‘Learn’ Category

4×5 Pinhole Plan

September 7, 2010

As alluded to in my last post I’ve been making and shooting pinhole cameras lately. The latest is the Petite Boite Noire (little black box… I give my cameras funny French names for some reason… hopefully I’m not cursing inadvertently or something).

525pinhole17The aperture is about 158, the base focal length is 1.5″ and it has a 1″ extension (approximately equivalent to the field of view of 11mm and 17mm lenses on a 35mm camera). It’s a 4×5 but I’m not using a film back. I planned to use paper as the light sensitive medium (paper is no longer strictly negative and calling it film is confusing so “light sensitive medium” is my term and I’m sticking to it)  so I just made the back the right size for taping a 4×5 chunk of paper to it.

525pinhole15Using paper as the light sensitive media has presented some new challenges. It seems to have a very limited range of exposure and it’s very contrasty. I’m having fun figuring it out though. More samples as I shoot them on my pic site here.

Here is pdf version of the plan.

I built the plans in Sketchup, Google’s free 3d software, so if you’d like that version, or have any other questions just post in the comments and I’ll get back to you.


Free Photography Classes

December 26, 2009

A friend who recently bought a camera asked me for advice on the best way for an armature to improve their skills. Of course my answer was practice practice practice. Thinking back on it later I realized that some practice could be done without even having a camera in your hand or having to drive to some place pretty. There are a handful of social networking type web communities that are centered around photography. Flickr is one example I’m involved in to I’ll speak to it. Flickr is a free convenient place where millions of photographers post millions of pictures. They also hangout, group up, talk about those pictures, talk about gear, technique and everything related to photography. So… if you start watching pictures on a regular basis… maybe join a group or two… you’ll be gaining photography experience from the comfort of your own home (or cubical). You’ll start recognizing what you like and don’t like and you can take that awareness with you next time you go shooting. Pick out a few favorite photographers and try to learn how they do what you like. Maybe even talk to them for a lesson. It’s great fun, you’ll see a lot of great photography and get lots of great practice.