Not so fast here. I'd never heard of a Corfield but just looked up the
Periflex. It's clearly an SLR... it's just that the reflex mirror is
contained within a periscope. It has to be raised and lowered as any
other reflex mirror.
And I will reiterate that the mirror is a defining characteristic of the
SLR class of camera. The reason is that the mirror places a constraint
on the usability of the camera. It must be lowered to view through the
lens. While there it blocks the shutter and film or sensor. In digital
cameras it prevents direct exposure measurement by the sensor. When the
photo is taken it must be raised out of the way and the viewfinder is
blacked out until it returns. The mirror also produces artificially
long lens register distances and forces wide angle lens design into
complex retrofocus designs.
Eliminating the mirror produces a very different sort of camera. Sorry,
reflex it ain't. :-)
Chuck Norcutt
On 3/15/2012 6:16 PM, Andrew Fildes wrote:
> Worked hard on getting EVIl recognised here but the editor said no -
> wimp. If the mirror is the defining characteristic, there are some
> old cameras that would strain your definitions. Have you seen a
> Corfield? :-) The fact that some digitals are doing the reflexion
> digitally blurs the definition but doesn't necessarily disqualify
> them. I got caned recently for describing the Fuji X-pro as a
> 'rangefinder' but, to be honest, how else can you describe it?
>
> I'm attempting to write a book on the evolutionary history of the SLR
> - wait for it and then you'll really have something to beat me up
> about. Andrew Fildes afildes@xxxxxxxxxxxxx www.soultheft.com
>
>
>
> On 16/03/2012, at 9:05 AM, Chuck Norcutt wrote:
>
>> No, the R means reflex. No reflex going on here without the
>> mirror. It's an EVIL camera (electronic viewfinder interchangeable
>> lens) :-)
>
--
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