DIY for Photography
Als Beispiel dient das Bild einer springenden Ratte wie im Titelbild dargestellt. Die Entstehung des Fotos wird im Folgenden aus technischer Sicht ausführlich erläutert. Warum gerade eine Ratte? Ratten sind sehr neugierig und haben erstaunliche motorische Fähigkeiten. Sie lassen sich relativ einfach zu einem Sprung in Richtung ihres Lieblingsfutters überzeugen. Ist der Weg einmal gelernt, ...
Das kleinere Gewinde wird in Kameras bis zu der Größe einer DSLR verwendet. Das größere ist an Mittelformatkameras oder schweren Stativen zu finden. Auch Mikrofon- und Bühnenstative verwenden diese Größe.
The Yongnuo RF603 ii radio remote release became quite popular under photographers recently. It offers all the amateur needs at a reasonable price. It has various connection options like the flash hot shoe, a 2.5mm jack connector and the PC sync plug. It uses standard AAA batteries in it's mk2 version. Something really great is the possibility to trigger Yongnuo's YN560-iii flash unit directly. None of the big camera manufacturers came up with this simple idea. They prefer to use their master-slave pre-flesh communication and hide this feature in less expensive camera models.
SmaTrig and the delay circuit the olny missing element in the drop photography chain was a circuit converting the low current trigger signals into a high current power signal driving the magnetic valve. This component is usually referred to as a servo, just like in a car. Such a switch comes in handy whenever heavy lights, solenoids, valves, motors, heaters or big relays have to be controlled by photographic circuitry, a microcontroller or other logic level circuitry.
In the following I've put together some useful commands for image processing that I used again and again in the last few years. They might be interesting for the technically oriented, ambitioned DSLR user working under Linux.
As simplicity and budget components were important design goals, there is no text display or any sophisticated analog input stage. The circuit allows three delay ranges which are indicated by LEDs.
The sensitivity of the trigger is limited, but high enough to detect popping champagne bottles, bursting balloons or eggs hitting the floor. It can trigger cameras as well as flashes, as both are activated by the same mechanism of short-circuiting two wires.
There are several ways to determine the shutter lag of a camera such as photographing falling objects, rotating discs or an electronic counter. I chose the digital method, due to a simple implementation and good readability of the results...
here. The RC-1 lets you trigger the camera instantly or with a delay of 2 seconds from a distance of up to 5 meters (~16 ft). It comes in very handy when taking long exposure pictures or for HDR photography. The presented circuit can be used as part of DIY interval triggers for smaller Canon cameras without the external trigger connector. In bracketing mode the RC-1 lets the camera shoot a whole series of images at once...