Thursday, February 7, 2008

The never-ending quest for better flash photographs

When the topic of flash photography comes up online someone will eventually link to the information at The Strobist. This guy has forgotten more than I will ever know about flash photography. He has a ton of useful information and it will probably require several readings to absorb much of it, especially if you are new to flash photography. One of the setups he uses a LOT is a single umbrella on a stand with a Speedlight flash (or other brand) controlled by wireless triggers. I love the results he has been able to achieve with this so I invested in a similar set up.

Now, I cheaped out on the wireless flash triggers. The industry standard for wireless flash triggers is a product called Pocket Wizard. Each one of these beauties costs about $175 and you need two at a minimum (one for the camera and one for the flash). GadgetInfinity sells a competing product that sells for about $36 and includes both a transmitter and receiver. Needless to say, I went with this cheaper option. However, I did encounter some shortcomings right away. With my shutter speed set to 1/125th I had several initial exposures that were either completely dark or half dark.

This is caused by sync problems between when the flash ignites and when the shutter opens. 1/125th is well within the product specs which should sync up to 1/200th. This may be due to some interference in my house. The trigger can use four different channels. By switching to a different channel I may see better results. More likely, however is that the battery that came with the unit was weak. After using it on a shoot for my church, the trigger stopped working completely. After replacing the battery the triggers began working perfectly. I knew this product was not 100% reliable when I purchased it. If you want 100% reliability you spend the money for the Pocket Wizards. For the cost savings I am going to try to live with intermittent sync problem.

When the sync did work, I was really excited about the results. The lighting was very soft and diffuse and I now have the ability to light my subjects from different directions to achieve different effects.

This new equipment opens the door for me to experiment with some new techniques such as side-lighting for a Rembrandt effect. Moving the flash off-shoe and off to the side does a lot to minimize flash shadows (which I have come to hate.) Also, notice no reflection in the glasses. The softer light from the umbrella reflection is more pleasing and uniform and creates a more natural looking photograph. Buying new equipment does not ensure better photographs, however. Now it is time to start learning how to use this new gear and see if the results I can achieve are better than what I have done in the past.


Monday, February 4, 2008

Sometimes, you get what you pay for.

I posted an entry not long ago about a homemade backdrop stand, and how sometimes you don’t have to spend the big bucks to get the job done. I still believe that is true, but I did run into some problems with my backdrop stand. It filled my immediate need for a shoot with a client, but when I purchased some larger backdrops, the stand just was not strong enough. I will also say that even though the homemade stand can be taken apart, some of the pieces are still six feet long (or more) which makes it difficult to transport. I shoot on location most of the time so having items that are easy to transport is a huge issue for me.
All of that is to say, I broke down and bought a real backdrop stand. Even so, it was not that expensive. I found one at a local photography store for about $160.00. The kit includes two tripod supports which fold down to be very nice and compact. The crossbar that supports the backdrop comes in four sections allowing widths from 3 feet to about 12 feet. It also came with a black cordura case that holds everything in a surprisingly small and easy to carry package. The tripod ends are rock solid and they adjust to more than 8 feet tall. The great thing is I can set up the supports (which start around 4 feet high), and then put the cross bar in place. Then I easily raise the supports to the desired height with no ladder required. The homemade stand required that I put the end supports up, and then set the crossbar on top, which was quite tricky.

I purchased two pieces of muslin from a local fabric store. One is naturally a light tan color which I left. The second I purchased in white and died it black, but it came out dark grey which I am satisfied with for now. Both are 7.5 feet wide and over 12 feet long. I did my first shoot with a client using this muslin and the new backdrop stand and it was great. I was able to move the client about 5 feet in front of the backdrop. I used a cable to move the flash off-shoe and hand-held it about 3 feet to my left. I also used the Gary Fong Lightsphere on the flash. The end result was a nice uniform backdrop, soft lighting and no distracting shadows.I really did try to find a cheaper solution, but they key to the whole backdrop stand is the two supports with tripod feet. I was not able to find any other solution that even came close to the $160.00 for the kit that was designed for this purpose. Does everything related to photography