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Recap of “PIN-PHONE workshop” at Worldwide pinhole photography day
24.04.2016

“Pin-phone Workshop” was our first activity of “Friends of Hong Kong International Photo Festival” in 2016, which coincided with Worldwide Pinhole Photography Day on the 24th of April. Veteran pinhole photographer Bobby Shum introduced the basic principles of pinhole photography and guided the participants to make their own pinhole photo device for smartphone.

Bobby briefly introduced the history of world pinhole photography when the section began. The detail can also be found here: http://pinholeday.org/

Next, Bobby simply introduced the principle of pinhole photography: the way of light path going through the pinhole and projecting an upside down image on the plane of an obscura. And the purpose of the activity was to demonstrate the method of capturing that pinhole image by smartphone.

The material for the device includes one box with lid, gaffers tape, a small piece of aluminum、exterior foam tape weather strip and rubber bands, etc.

Since the size of smartphones are various, the position of the smartphones should be pencil-marked on the lid first.

Two holes were made on the lid while one for the lens on smartphone and another one for sticking the pinhole.

The pinhole can be made from cutting out small pieces from soft drink can or aluminum baking tray and then using a pin to drill through them.

The position of the smartphones should be fixed by surrounding the exterior foam tape weather strip. And the rubber bands or gaffers tape might be used to strengthen the position to prevent the smartphones dropping off. The lens must be aligned to the hole with the screen turning outward.

If there is adequate of light during shooting, a projected image might be seen on the screen directly.

Focusing is usually required. Thus, a strong light source can be used to aim at the pinhole to project a light spot inside the box to aid focusing for producing better image quality.

It’s time for the participants to find the target.

It’s time for the participants to find the target.

Finding a place without obstacles first and holding the devices for 10 – 30 seconds (depending on the light intensity and ISO), some results will soon be seen.

Success! An inversed image was captured.

Here was another one. It seems not quite hard than expected.

If only indoor space is available, there is another method to shoot without sunlight. Using high power LED lighting for movie long exposure can be considered.

If only indoor space is available, there is another method to shoot without sunlight. Using high power LED lighting for movie long exposure can be considered.

This photo used pre-installed camera app for shooting. The setting was ISO 2700, 30 sec.

This photo used pre-installed camera app for shooting. The setting was ISO 2700, 30 sec.

Holding breath for 3-5 seconds can do pinhole selfie under strong sunlight!

Let’s see the results shared from the participants.
By Daisy Fung (iPhone 6)

Let’s see the results shared from the participants.
By Edwin Liu (Asus Zen 2)

Let’s see the results shared from the participants.
By Emilio Pang (iPhone 6)