>>If you are using flash, and have the ISO mode set to >"auto ISO" every single time you use flash, it will >set the ISO to 3200. > >Diane > >That is not entirely correct. The camera will only select >your highest ISO if the meter reading without the flash would >have called for that ISO. In other words, it only occurs in >low light situations. To demonstrate, set your top AUTO-ISO >to 3200 or 6400 and then go outside in bright daylight and >take a flash picture, basically a fill-flash picture. Notice >that the ISO for that shot is not 3200 or 6400, but rather >closer to your preferred setting of 100 or 200. > >I haven't verified this since I rarely use the built-in flash, >and if I do I turn off Auto-ISO, but I read an explanation >that I believe stated that the camera reduces flash output >rather than lowering the ISO. Personally, I don't like this >firmware decision, but turning off AUTO-ISO or limiting the >top setting is an easy workaround. > >jP
OK I've never tested this using the built-in flash outside, with moderately bright or bright light. You are quite likely right.
I assumed the OP was talking about using the flash indoors, with fairly low lighting.
working on it in Middle TN Nikon D3100
35 mm 1.8 Nikkor 18-55 mm Nikkor VR 55-200 mm Nikkor VR 55-300 mm Nikkor VR 150-500 mm Sigma OS MeFoto Road Trip w/Q1 ballhead Feisol CT3471 & Markins M20 ballhead