Saturday, July 31, 2010
Thursday, July 22, 2010
Vivitar 283 PowerControl
Adding a Power Control on your Vivitar 283 flash. This guy connected a potentiometer to the vivitar's plug. Seems very easy and a lot less work than other mods where you have open the flash to get to the thyristor and solder to the PC board.
Wednesday, July 21, 2010
2 Flash with 1 Ebay Triggers
I have often wondered if it were possible to run two flashes from one trigger. Here is the answer.
Using Cactus V4 radio triggers as remote shutter releases.
I had thought about doing this a while back but wasn't quite sure it could be done but lookig through flickr I found that someone had already done it.
Tuesday, July 20, 2010
ANOTHER SLA FLASH BATTERY MOD
This one shows you how to install a fuse in the circuit.
http://www.johnhagar.com/lfmm/sla/sla_diy.html
This one shows you how to wire a circuit to run two flashes from one battery.
http://ambrotosphotography.com/blog/2010/05/diy-sla-battery-pack-for-speedlites
How to wire a circuit in Parallel.
In a parallel circuit, each component has its own direct path to both the negative (-) and positive (+) sides of the circuit. A simple schematic of a parallel circuit is shown below. In actually wiring the LED lights from Berkeley Point, as long as the red leads from the lights are connected to a wire that goes directly to the positive (+) side of the power supply and the black leads are connected to a wire that goes directly to the negative (-) side, you have wired the lights in parallel. If you follow the wire path back from a light to the power supply, it can "T" to other lights but should not go through any other lights. If your feed wire is similar to the Belden wires provided by Berkeley Point in so far as they consist of a red and black wire. In a parallel circuit, you will never have a black wire connected to a red wire (contrasted with example of series circuit shown above). Further, as long as you can follow a path from the red wire of a light back to the positive (+) side of the power supply through red wires and the same through black to the negative (-) side, you have wired in parallel. A group of many lights may have all their red leads connected together with one red (+) feed wire and all their black leads connected together with one black (-) feed wire.
http://www.johnhagar.com/lfmm/sla/sla_diy.html
This one shows you how to wire a circuit to run two flashes from one battery.
http://ambrotosphotography.com/blog/2010/05/diy-sla-battery-pack-for-speedlites
How to wire a circuit in Parallel.
In a parallel circuit, each component has its own direct path to both the negative (-) and positive (+) sides of the circuit. A simple schematic of a parallel circuit is shown below. In actually wiring the LED lights from Berkeley Point, as long as the red leads from the lights are connected to a wire that goes directly to the positive (+) side of the power supply and the black leads are connected to a wire that goes directly to the negative (-) side, you have wired the lights in parallel. If you follow the wire path back from a light to the power supply, it can "T" to other lights but should not go through any other lights. If your feed wire is similar to the Belden wires provided by Berkeley Point in so far as they consist of a red and black wire. In a parallel circuit, you will never have a black wire connected to a red wire (contrasted with example of series circuit shown above). Further, as long as you can follow a path from the red wire of a light back to the positive (+) side of the power supply through red wires and the same through black to the negative (-) side, you have wired in parallel. A group of many lights may have all their red leads connected together with one red (+) feed wire and all their black leads connected together with one black (-) feed wire.
Thursday, July 8, 2010
Macrophotography Setup
Originally uploaded by Thomas Shahan
This is a very inexpensive macro setup that produces some amzing results. Please check out Thomas Shahan's pictures on flickr they are awesome.
Subscribe to:
Posts (Atom)