Road Train !!!!!!!!!!

by Russell McMahon

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3
votes
2answers
284 views

How do I manually focus my macro in poor lighting conditions?

I'm using my Canon 100mm f/2.8L macro handheld all the time together with a flash rig and it works wonders. Most of the time I have an Eg-S focusing screen installed as well which makes it even easier ...
3
votes
1answer
358 views

How can a teleconverter allow manual focus lenses to autofocus?

I've found that some discontinued teleconverters, such as the Pentax F 1.7x AF Adapter and Nikon TC16A, enable autofocus with manual focus lenses. How is this possible? Does this system have any ...