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Nikon Users

Members: 12
Latest Activity: Nov 14

Discussion Forum

Lens Rental in Lower Mainland? 1 Reply

Started by Doug Raines. Last reply by Sharon Wright May 19, 2011.

How You Chose Nikon 4 Replies

Started by Doug Raines. Last reply by Doug Raines May 31, 2009.

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Comment by Roger Lasell on February 10, 2012 at 4:52pm

Ok I am now an official Nikon user. Waited for the D800 but couldn't wait anymore D700 or at least until the D800 is available!

Comment by Jack MacDonald on October 16, 2008 at 8:19pm
Few hiccups? You are being very generous! ;-]
Comment by Jack MacDonald on October 12, 2008 at 11:04am
Did some experiments to follow-up the discussion about ISO and flash and image brightness. Using a D80 and SB600, shooting one scene at ISO 100, 200, 400, and 800 using iTTL. According to theory, all the images should have the same brightness because the iTTL system should reduce the amount of light emitted by the flash as the ISO increases. However, the images are "slightly but noticeably" brighter as ISO increases. They are NOT so bright (overexposed) as one would expect from doubling the ISO. I concluded that the iTTL system does indeed reduce the amount of light emitted from the flash, but does not do a perfect job of it. User input is required to calibrate for the different ISO.
IMHO, this is just one more reason to learn and use manual exposure as exemplified by the "strobist system".
 

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