Re: LCD for SLR
rafe b wrote:
> On Wed, 1 Feb 2006 01:19:41 -0000, "Alan Morris"
> <news4x4alan@xxxxxxxxxxxxx> wrote:
>
>
> >So I visited the local camera shop and looked at the Canon DSLRs, but none
> >had the rotating LCD of my G2.
>
> Yep, I love that feature. Specially being
> a wee bit height-challenged, it comes in
> handy when I'm in a crowd.
Even tall people need to be to hold the camera over a crowd to get a
clear shot sometimes :-)
> >Do away with the mirror and have a large LCD.
> >
> >Or am I missing something?
>
>
> Let me take a stab at it. You need a
> shutter over the LCD to prevent the huge
> shutter lag of most point & shoot digicams.
>
> Not sure how Oly gets around this problem,
> or what the Oly's spec is for shutter lag.
Olympus have "side-stepped" around this problem for the full-time live
(mode 1) preview by using a secondary CCD sensor inside the viewfinder
(not the main sensor, which is behind the reflex mirror and shutter
during "mode 1" preview).
> In the G2 (as I only recently discovered)
> this is what happens:
>
> 1. you push the shutter button
> 2. a leaf shutter in the camera closes
> 3. the CCD is electronically discharged.
> 4. the leaf shutter opens
> 5. the CCD is exposed, read out,
> processed, and stored to memory.
That is basicaly how Oly implemented "macro mode" (mode 2) live preview
in their E-330, except the reflex mirror and focal plane shutter reset
(not a leaf shutter like a P&S).
According to the hands-on preview at dpreview.com, it takes a whole
second from button press to shutter firing in "mode 2" live preview.
.
