Controlling the Iris

Note:

If the T-stop scale of the lens being used is linear,

 

it is sufficient to enter just two T-stops, which must

 

be at least four T-stops apart, in order to define

 

the iris table. If the T-stop scale is not linear, all

 

the T-stops must be assigned individually.

 

After programming the iris table, all individual

 

T-stops on the lens must be checked by adjusting

 

with the handwheel in order to avoid incorrect

 

exposures!

Note:

If the lens has a CLOSE position, this must also

 

be defined, as the iris table only applies up to

 

the last value before the CLOSE position! When

 

assigning, the CLOSE position is programmed

 

after the highest possible T-stop setting.

Note:

For compensating the exposure, only the range

 

between full T-stops may be used! Example: the

 

iris scale of the lens reaches from T2.2 to 22.

 

The values for T4 and T16 are assigned. The

 

resulting usable range reaches from T2.8 to

 

T22, as T2.2 is not a T-stop from the standard

 

T-stop range (T2.0).

Note:

If a T-stop value has been assigned which

 

cannot be correct, a warning is displayed; e.g.

 

T-stop 11 cannot lie between 5.6 and 8. The

 

incorrectly positioned value must be deleted.

If the iris table should remain available after using another lens, it must be stored as described below. This also applies when an iris table has been re-edited.

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