I've had the Cobra 700af flash for quite a few months now, but I've never got round to using it properly. When I bought it from the car-boot sale, I popped some batteries in and gave it a quick go, but it didn't seem much more powerful than the pop-up flash on my 350d, and didn't do very well when I tried to bounce it off ceilings or walls. I guess I've got a lot to learn...
The Cobra 700af, with my 350d, on its bracket:
I got some extra rechargeable batteries recently, so I popped four in the flash head and four in the handle. I was determined to see if I could get some half-decent macro shots, as a strobe can really improve the colours when working macro, plus it means I don't have to use the long exposures required when using smaller apertures with natural light.
I used my Soligor 90-230mm zoom, some extension tubes, the M42-EF adapter to make the old lens fit my 350d, two tripods (one for the flash), my remote-control shutter release, mirror lock-up, and, of course, the Cobra flash.
I think I'm going to enjoying playing around with the Cobra, and here's the best of the photographs I took in the garden:
Flower From Side (In Garden)
Yellow Flower (With Flash)
Stamens Detail, Red Flower (In Garden
Check out the detail in the original size.
I'm using the camera in Manual mode, where what happens is the flash fires whenever the shutter trips. To control the exposure, apparently the way it works is that the shutter speed controls the ambient (background) light, and the aperture controls the amount of flash on your subject (I think!). However, the 350d has a maximum flash sync speed of 200th of a second, so that's one of the limiting factors.
Right, I'm off to the Strobist to learn a bit more about this flash business!