Focus Ring - Irix 15 f/2.4 mm Mode D'emploi

2 — EN
[4] FILTER WINDOW
The filter window facilitates access to the rotatable
filter, providing a convenient way to rotate the filter
when the lens hood is in basic position.
To open the filter window, slide the cap upwards
while hiding it in the hood, until you hear a "click".
When the window is not being used, it is
recommended to close it by sliding the cap back
to its original position.
[5] FOCUS SCALE CALIBRATION
The focus calibration hole can be found under a
detachable cover and provides access to the rings
regulating the focus scale position.
Only experienced users and Irix customer
service staff should use this function.
Details regarding the focus scale calibration
procedure can be found in the Extended User
Manual.
[6] FOCUS LOCK RING
The focus lock ring lets you lock the focusing ring in
the chosen position.
To lock the focus ring, rotate the focus lock ring
left until there is noticeable resistance. To unlock
it, rotate the focus lock ring all the way to the
right.
Attempting to forcibly rotate the focus ring when
locked by the focus lock ring may result in
permanent damage to the lens.

[7] FOCUS RING

The lens is not equipped with a autofocus system.
To focus on a given object, observe the image in
the viewfinder or on the camera screen and adjust
it manually by rotating the focus ring. You can also
use the distance scale (in feet or meters) on the
lens body to estimate the distance to the chosen
object for the photograph.
When the ring is set in the "infinity" position, there