LarryG
Western Thunderer
Regarding the nighttime shot at Berwyn.
It was next to impossible to work out a truly accurate time exposure with my hand-held light meter, so I didn't bother. With no tripod to hand, I firmly rested the camera (Mamiya 645) on the bridge parapet and propped it up at the required angle with a couple of small stones. The lens cap was gently held over the lens and the shutter manually opened and left open. As soon as the DMU stopped, I removed the lends cap to expose for 15 or more seconds with the aperture set at around f11. I also popped off the hand held flashgun a few time to add some light to the bridge and then the cap was held in front of the lens again until the driver opened the throttle. The lens cap was removed again to capture the exhaust. It was important to close the shutter as soon as the DMU started to move.
I knew where I was with a simple medium-format light-tight box such as I regularly used in 'film' days, but I cannot offer any advice on how to do it with a DSLR. Can a lens be kept open on a DSLR? Keeping one open could risk damaging the digital chip I expect.
It was next to impossible to work out a truly accurate time exposure with my hand-held light meter, so I didn't bother. With no tripod to hand, I firmly rested the camera (Mamiya 645) on the bridge parapet and propped it up at the required angle with a couple of small stones. The lens cap was gently held over the lens and the shutter manually opened and left open. As soon as the DMU stopped, I removed the lends cap to expose for 15 or more seconds with the aperture set at around f11. I also popped off the hand held flashgun a few time to add some light to the bridge and then the cap was held in front of the lens again until the driver opened the throttle. The lens cap was removed again to capture the exhaust. It was important to close the shutter as soon as the DMU started to move.
I knew where I was with a simple medium-format light-tight box such as I regularly used in 'film' days, but I cannot offer any advice on how to do it with a DSLR. Can a lens be kept open on a DSLR? Keeping one open could risk damaging the digital chip I expect.