Peter,
The latest fad in DSLRs is live preview. This involves raising the mirror
and turning the rear LCD into a live image from the sensor.
Advantages are: No mirror shake, no need to look through the viewfinder.
Disadvantages are: Much greater battery consumption, inability to compose
the picture through the viewfinder.
I guess the manufacturers feel that this gives users the best of both worlds
- use of the camera as a true SLR or use of the camera like a "compact"
digital.
Paul Dodd
Docklands, Melbourne
-----Original Message-----
From:
On Behalf Of Peter Shute
Sent: Tuesday, 22 July 2008 1:53 PM
To: Tony Ashton;
Subject: Re: Seeing things
Others have explained this effect adequately. I think all the large
zoom non-SLRs have an electronic viewfinder, as the optics of an optical
viewfinder might make them too expensive. Your email has raised a few
questions for me:
- What exactly is live preview? Is this something new for DSLRs that is
standard on non-SLRs, or is there something more to it?
- You say the focal length was 700mm, but the max for an FZ30 is 420mm.
Did you have a doubler on it? If so, what sort, and what sort of
results are you getting from it?
- How do you find the noise at the higher ISO settings on that camera?
Just wondering how it compares to my Canon S3IS, on which 200 isn't
great and higher is only for when one has no alternative. I'm starting
to find it a little restrictive, but I'd rather put up with it than lug
around a heavy SLR.
Peter Shute
> -----Original Message-----
> From:
> On Behalf Of Tony Ashton
> Sent: Tuesday, 22 July 2008 11:02 AM
> To:
> Subject: [Birding-Aus] Re: Seeing things
>
>
> Gidday all,
>
> Puzzle for people found with binoculars or cameras glued to
> their eyes. Tyto Wetlands is next door to Ingham airstrip.
> Medium-big helicopter took off as I was watching Black Kites.
> Casually looked through 10x32 Gerbers (as you do) as chopper
> sped across sky. Main rotor blades stood out sharply, in
> rotation. Focussed digital Panasonic FZ30 camera (not DSLR,
> no live preview; lens set at 700mm=) on chopper, and the
> blades came almost to halt. Back to binos: blades turning.
> Back to camera: blades near halt. Seems sighting through
> camera viewfinder accentuated stroboscopic effect. Perhaps
> mono v stereo vision? Would this apply if viewing through a
> scope? If what you see isn't what you get, it might explain
> why seeming pin-sharp images seen during autofocussing hold
> no magic on review. Imagine a hummingbird photographer seeing
> stable images and getting blurred results. On the other hand,
> imagine stalling wing movement to assist identification of,
> say, flying waders. Comment?
>
> FYI: Immature Red-Capped Robin gone after seven weeks here,
> northeast of range, but immature Rufous Songlark, also
> outside range, still about. Plus rare showings here and
> further north of 100+ Sulphur-crested Cockatoo flocks.
>
> Cheers, Tony Ashton
> ==========www.birding-aus.org
> birding-aus.blogspot.com
>
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