Exakta RTL 1000 User Manual

of 5.6 and smaller. the image in the microprism
field will appear relatively sharp, even with the
lens incorrectly focused. This. of course. will l ead "
to
unsatisfactory results. For extreme close~ups of
magnifications greater than 1: 1 and for photo-
micrography. the microprism cannot be used. The
rest of the image in the viewfinder !Fresnel field)
does not serve for focusing the lens.
Reading off the depth of field: When the depth of
field is great. objects at widely varying distances
from the camera will form a sharp image. After
focusing the precise extent of this sharp zone will
be indicated by the depth-of-field scale (18) on the
lens: on either side of the orange~coloured setting
mark (triangle) you can read off from the distance
scale where the depth~of-field zone begins and
ends for any specific aperture setting. If the
relevant aperture number on one side of the
central distance~setting mark is in lin e with the
infinity symbol (0Cl) or - beginning from the
centre - even beyond it, then the depth of field
wi ll extend right up to infinity.
On the right above one example :
Distance setting 3 metres, aperture f 8 = depth
of field extends from something more than 2 metres
to 5 metres.
5
1, 5
16
7 10 15 30 ft
2 3 5 10 00 m
16 11 8 5,6 42 ,8 2
L
1 ,8

Exakta RTL 1000 Specifications

General

Brand	Exakta
Model	RTL 1000
Category	Digital Camera
Language	English