Becoming a professional photographer – especially working for National Geographic – is not an easy path. It’s very interesting to hear how different photographers got started, and how they “made it.”
For your second try using your pinhole camera, you will need to use the “Calculated F-Stop” column in the chart below. Take that number that we have calculated and type it into the “Pinhole Camera’s F-Stop” field on the Mr. Pinhole website (click here). The website will give you a chart of exposure times. When you go to photograph, take your DSLR with you, and a printout of the chart you got from Mr. Pinhole. (Or use your cellphone and get the chart when you are out shooting.)
Okay – you’ve made your pinhole camera and now it’s time to photograph with it. A lot of this depends on your camera and how well you built it. The biggest factor is the size of the pinhole. If your pinhole was bigger (about 0.75mm), then the aperture size is around f/55. If the pinhole was really small (about 0.30mm), then the aperture size is about f/160. If it was in the middle somewhere (about 0.50mm), then it’s about f/128.
Below is a chart for the exposure times. The methodology can be this: Take your camera with you and set the ISO to 100. Then read the shutter speed needed by your camera. Follow the chart to the right, chose the size that you think is closest to the measurement of your pinhole, and then figure out the exposure.(more…)
It was a short week, but I can’t wait to see the images that you all are going to produce during your first assignment! Below are links to the course outline and the camera loan letter, just in case you need them.