Recent content by G0LOJ

OK. Thanks. I'll certainly watch the YouTube. I think one aspect of my question is whether by 'power' we mean instantaneous brightness or total light delivered. From a physicist's point of view, I reckon 'power' ought to mean instantaneous brightness. Assuming that it does, you could have two...

The main reason for asking about LED ring flashes in particular is that I'll be giving a talk on macro at my local camera club and I'd like to be able to say something informed about the relative pros and cons of flash-tube and LED ring flashes. I have the impression from what I've read that an...

Hi folks, I'm new here. Can anyone please give me some basic tips on ring flashes for macro - especially about the key differences between LED ring flashes and the more conventional 'flash tube' ring flashes'? In particular, many of the web sites describing particular ring flashes don't seem to...