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Understanding Camera Flash

New article posted: Understanding Camera Flash
55-250mm standard lenses. Dual tube macro flash and external speedlit...
Posted: 06/27/2013, 17:48:21 PM
Useful, thanks for sharing
A DSLR and a mirrorless camera, a bunch of lenses, a flash.
Posted: 06/28/2013, 00:59:34 AM
6. I used bounce flash and my image is underexposed.
The camera calculates exposure based on what it sees through the lens. The camera assumes the flash light would fall directly on the subject. But the actual light that falls is lower in intensity because of scattering and absorption by the bouncing surface. So just increase flash power by making flash EV +1 or +2/3, whatever gets you a proper exposure.

That calculation works when you tilt the flash speed light head direct at the subject or scene. When you tilt the head at an angle e.g 45 degrees or 90 degrees the flash will automatically increase the flash intensity internally. Still at times the scene will not be properly exposed - not because of insufficient flash compensation but rather the nature of the location - whether it has low or high ceilings, color of the walls, or a dimly lit open space with the skies and heaven to bounce your flash back to earth.
Entry level digital SLR cameras and lenses.
Posted: 06/28/2013, 03:55:05 AM
While most flashes calculate exposure for bounce flash correctly, some third party flashes aren't able to. Especially when used off camera with complex lighting setups
55-250mm standard lenses. Dual tube macro flash and external speedlit...
Posted: 06/28/2013, 04:58:04 AM
Good stuff. Thanks for writing!
Nikon, Adobe and Macintosh
Posted: 06/28/2013, 08:40:27 AM
Very useful, thanks for posting!
Nikon Equipment, Nikon Lenses, Professional Photo Software
Posted: 06/28/2013, 10:03:36 AM
Thanks for sharing, congratulations great blog!!!
900 --- Photoshop---Illustrator --- Panasonic LX5 --- Cinema 4d --- ...
Posted: 06/28/2013, 15:06:03 PM
Great primer on using onboard pop-up flashes. Lots of great information.

P.S. I especially like your coining of the acronym "FWP" (Frequently Wondered Points)! FAQs just don't cut it anymore :).
G IF ED VR; Nikkor ED 18-200mm f/3.5-5.6G IF DX VR; Nikkor 50mm f1.4;...
Posted: 06/28/2013, 20:07:58 PM
Very useful, thanks for sharing
430EX II + Canon Speedlite 90EX + Apple MacBook Pro 15" i7 + Lig...
Posted: 06/29/2013, 00:03:50 AM
Yes,thanks for sharing,Robin!
Posted: 06/29/2013, 02:00:31 AM
Point #1: I will probably use a pop up flash behind a pop up flash diffuser at minus minimum EV setting to trigger a remote speed light flash unit since I do not have a wireless trigger : )
Entry level digital SLR cameras and lenses.
Posted: 06/30/2013, 02:41:15 AM
Unteroffizer, That would still have the effects of fill-in flash plus the additional flash because the external flash operates off the pre-flash.
So you could just enable pre-flash and disable the rest to use it as remote control. That would make sure there is very very little effect of on-camera flash on your photo. :)
Using a diffuser on pop-up flash is already troublesome because you're losing intensity. Wouldn't work in daytime. And if you increase flash power, on-camera flash would make images flat. Double trouble. So just keep flash power highest and enable only the pre-flash. Solves the double trouble without a single trouble.
55-250mm standard lenses. Dual tube macro flash and external speedlit...
Posted: 06/30/2013, 07:15:58 AM
Very useful info!
Cameras, lenses, phone, eyes, feet and a car.
Posted: 06/30/2013, 11:03:17 AM
Amazing blog, thanks for sharing.
and equipment: - Nikkor 70-300 mm - Nikkor 18-105 mm...
Posted: 07/02/2013, 10:35:24 AM
Useful. Thanks ;)
II, AF-S Nikkor 35mm f1.8, Nikkor AF D Micro 60mm f2.8, Flash SB-700,...
Posted: 07/04/2013, 02:19:05 AM