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[stunsworth]

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Not to mention a Rolleiflex TLR, should that be a TL?

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[sdai]

You guys are hypercritial ... By the definition of single lens reflex camera, light comes through the lens onto a mirror, which then reflects it through a five-sided prism into the viewfinder.

 

I've said by strict definition, ok ... you guys can try to correct the Encyclopedia Britannica or Wikipedia (just for the sake of argument and 5 minute fame on the Internet ) .

 

Apparetnly Rollei realized the dilemma calling their camera a SLR so they add a prism and 90 degree viewfinder for the Hy6 ... right?

 

T is the 20th letter after S ... wrong? LOL

 

But my point is ... the concept in the darned format, is proven wrong.

 

[AlanG]

I hate to be so particular or to challenge the accuracy of the Encyclopedia Brittanica (I haven't read it.) or Wikipedia (which does address waist level finders), but people should know that single lens reflex cameras existed long before penta prisms.

 

Graflex RB Series D / Super D

[earleygallery]

Not being hypercritical just trying to be accurate - there is no correlation between the term 'single lens reflex' and having a pentaprism, which is the incorrect definition which you are applying here.

 

Reflex refers to the use of a mirror to deflect the image to a viewing screen. As Steve has pointed out a Rolleiflex is a Twin Lens Reflex because it uses a separate lens for the viewing screen, but has no pentaprism (ok you can add one if you wish to use it at eye level). My Bronica is a single lens reflex whether or not I use the pentaprism finder on it.

 

Hope that's cleared that one up!

[sdai]

Nobody is going to read an encyclopedia ... only a minute quick search from the CD-ROM but, that was how it defines SLR, I should be politically right if I call the Graflex the grandmother of SLR ... you could also say rocks have existed from day 1 and people threw them at each other long before the German launched their V2.

 

You may have your own understanding of the terminology ... that's fine with me. I only repeated what I found from some references where "reflex" as a complete process in this case is defined as light reflected by the mirror, through a penta prism, to a viewfinder (specifically), not a viewing screen.

[adan]

The only defining characteristic of a reflex camera is that the viewfinder uses a mirror to reflect the focusing image to a viewing screen.

 

A twin-lens reflex camera uses separate lenses for focusing and exposing. A SINGLE-LENS reflex camera uses one single lens for both purposes.

 

A Nikon F with the prism removed for low- or high-angle photography does not magically change into another form of camera - it is an SLR, with or without the prism attached.

 

The original, or UR-, or prototype 35mm reflex was the Exa of the 1930's - which did not have a prism, just a waist-level finder.

 

As SLRs came into more popular use in the 1960s, the top-of-the-line pro cameras always had interchangeable viewing mechanisms above the viewing screen (prisms, angle finders, magnifiers, sports finders). Only the low-end amateur cameras (Nikkormat, Canon FTb) had prisms permanently affixed. Both forms were SLRs.

 

Apparently the EB entry was written by one of those "experts" who also advises Hollywood directors to use a motor-drive sound when pictures are taken with thumb-wound cameras in period movies - d'oh!

 

There is no etymological link between "rock" and "rocket"* - although both can accurately be described as "missiles" when propelled with intent to do harm or damage.

 

*(Rocket comes from italian for "distaff' (rochetta), the stick that holds a bundle of wool or flax for spinning, no doubt because of the stick used as a launch support in simple rockets ("Up like a rocket, down like the stick") - Rock comes from vulgar latin "Rocca" via the French "Rocher")