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real iris and/or nd filter

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Offline jpgr

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real iris and/or nd filter
« on: 14 / December / 2008, 07:49:00 »
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how can you find out if a camera has a real aperture (iris) and/ or an nd filter?
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Offline hotvedt

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Re: real iris and/or nd filter
« Reply #1 on: 14 / December / 2008, 08:19:27 »
I think that in most cameras, you can probably just look in to the lens, and you can see the iris if any.
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Offline dzsemx

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Re: real iris and/or nd filter
« Reply #2 on: 14 / December / 2008, 10:03:40 »
yes, the iris can be seen, just point the camera during record/preview mode (use auto mode) to a ligth source and you'll see closing.
with ND filter probaly you can hear only a click when kicking in/out, not sure how it's acting.
As i know all powershots got iris, G series have both, only ixuses got ND filter because of the very compact lens.
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Offline fe50

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Re: real iris and/or nd filter
« Reply #3 on: 14 / December / 2008, 14:35:55 »
Quote from: dzsemx on 14 / December / 2008, 10:03:40
yes, the iris can be seen, just point the camera during record/preview mode (use auto mode) to a ligth source and you'll see closing.
with ND filter probaly you can hear only a click when kicking in/out, not sure how it's acting.
As i know all powershots got iris, G series have both, only ixuses got ND filter because of the very compact lens.

Yes, you can also see the ND filter swinging in & out when you hold the camera against a strong light, you can also hear it clicking.

Another sign for the presence of a ND filter: only 2 F-stops (without the zoom), e.g. F/2.8 (ND filter out, not active) and F/8.0 (ND filter is active).

Not all Powershots has a real aperture (iris diaphragm), some of the cheaper ones has a ND filter instead: A450, A460, A530, A550, A560 & TX1.
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Offline dzsemx

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Re: real iris and/or nd filter
« Reply #4 on: 14 / December / 2008, 15:12:28 »
i didn't know that the cheap series got ND filter, too, but for sure, it's cheaper a piece of plastic than a complicated iris mechanism
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Offline jpgr

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Re: real iris and/or nd filter
« Reply #5 on: 17 / December / 2008, 12:45:40 »
thanks for the replies
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