Mamiya C330f Professional Reparaturanleitung PDF herunterladen (Seite 51)

Mamiya TLR Summary 51

15 Glossary

15.0 General medium format terms and acronyms

I will add to this list as I come across terms that may not be self-explanatory. It isn’t intended to be definitive.

Coating A layer applied to lens glass surfaces to alter their

refractive characteristics. Multi-coating uses more than one

coating to correct for different behaviour by different

wavelengths (colours) of light.

Parallax The different image content that results from slightly

different viewpoints. What you see isn’t exactly what you

get.

Pentaprism A five-sided prism (obviously!) that provides an eye-level,

right-way up, left to right correct view of the subject.

Taking lens In a twin lens reflex camera, the lower lens used to expose

the film.

Viewing lens In a twin lens reflex camera, the upper lens that is used for

composition and focusing..

WLF Waist-level finder. The basic ‘flip-up and look down’

finder type. Consists of a folding light shield around the

camera focussing screen. Image is right-way up, but left to

right reversed.

15.1 Mamiya TLR specific terms

Paramender Mamiya device to move the camera at right angles to the

lens axis and parallel to the lens board by 50mm (2”). This

moves the taking lens to the viewing lens position to

correct parallax at close distance.

Porrofinder A finder that uses mirrors to achieve a right-way up, left to

right correct eye level image. Similar in effect to a

pentaprism.

Rack and pinion A gearing mechanism that uses a toothed bar or track in

conjunction with a toothed roller at right angles to the bar.

16 Common Problems

16.0 Introduction

Most of the content of this section can be found spread throughout the rest of this document. This section is intended to be a

combination of quick reference and pointer to more details.

16.1 Shutter release problems

The shutter will not release unless the bellows is fully in (or out).

This may mean that the internal light baffle is raised (the camera control is in the ‘unlock’ position). This is a camera

interlock feature that is not normally by-passed.

The shutter will not release.

There are several possible causes. On some cameras the multi-exposure interlock trips before the shutter. So if you start

to press the release and change your mind the camera body can be fooled into thinking that you have released the shutter.

This behaviour varies between bodies. Use the Multi exposure setting to use the release, then reset to Single exposure

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