Went for the A650 after All

Started Sep 8, 2007 | Discussions thread
AdamT
OP AdamT Forum Pro • Posts: 61,124
Re: Adam, a question regarding manual exposure.

I have a Ricoh GX100, a fine P&S, with a 24mm lens. However, in
manual mode if you shoot with the lens wide open (2.5) in full
sunlight, it will not automatically use a fast enough shutter speed
obtain proper exposure.

Manual mode is where YOU Choose the shutter speed, the camera chooses nothing, it goes up to 1250th sec at F2.8 .... the reason why these lenses are limited in shutter speed at F2.8 is because the lens Iris is also the shutter and the wider open it is, the further it has to travel limiting the shutter speed - the max shutter speed of the A650 is 2000th sec , it does that from F4 onwards..

In Aperture Priority mode, the cam will select anything it needs up to 1250th sec at F2.8 and F3.5 and 2000th sec at F4 or smaller

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