Toronto Photography Meetup Group

I am practicing my lighting. I read on book that the aperture control the flash on the subject and the shutter speed controls the ambient light. However, during my test, it's not the same. I fixed the flash out put with manual and the aperture and adjust the shutter speed only, by ambient light in the photo does not change from 1/250 to 1/30. How does that happen?
Thanks!

In studio shutter speed has no effect (keep it under your cameras sync speed) Usually 250th

Only time shutter comes into play is when your mixing ambient and strobe .. Ie .. Shooting in a house with people or at a venue in order to get the ambient aswell as the flash to balance youll probably need a longer exposure to burn in the ambient light ...

To answer your question .. There must be no ambient light your flash must be lighting the room by itself no ambient

Thank you and congratulation on your first publish:)

Turn off your flash and then note the camera setting that are needed to get a correct exposure that is your ambient now to reduce ambient you can either increase the f stop or increase the shutter speed or increase both. Now add flash adjusting fstop (aperture) will change both ambient and flash by an equal ratio while changing shutter speed because of the short flash duration will only change the ambient (this as long as you stay within the flash maximum sync speed).

The trick is to get the right balance between flash and ambient.

Thank you! I read this skill on Strobist and I might need more practice. [/url]

if your ambient is not changing despite faster shutter speed, you might want to check to see if your Auto ISO is on, which would compensate for that automatically.

Check out http://www.adorama.com/alc/category/AdoramaTV. They have pretty good step by step video tutorials on basic lighting for the studio and outdoors.

thank you Pam!