DZOFILM GNOSIS Bedienungsanleitung
GNOSIS MACRO PRIME LENS
USER’S MANUAL
观系列微距定焦镜头使用说明书
www.dzofilm.com
电影镜头
CINE LENS
Introduction ...................................................................................1
Safety Notes..................................................................................1
Lens Parts ..................................................................................... 2
Lens Control.................................................................................. 3
Flange Back Adjustment............................................................ 5
1. Preparation........................................................................... 5
2. Flange Back Adjustment ................................................... 6
Specification................................................................................. 8
After-sales Service ...................................................................... 9
The Name and Content of Hazardous Substances............. 11
Contents
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Note
1
Introduction
Safety Notes
Magnification Ratio、Exposure Compensation Identification
Magnification Ratio:
the magnification ratio under ongoing focusing distance.
Exposure Compensation:
the difference between actual T value and the
directing T value on aperture ring. When the Exposure compensation
identification is 4.18, Actual T Value=T Value showing on the aperture ring+4.18.
4
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Magnification Ratio、
Exposure Compensation Identification
1:10
+0.1
1.Preparation
Every Gnosis lens will process flange back adjustment on standard.
But due to the tolerance of different cameras, to achieve the best
performance of this product and to match the cameras, please adjust
flange back of the product.
Take
Gnosis 32mm
as an example:
Step Two : Attach the lens to the camera and adjust the aperture to T4;
Step Three :
Make the pointer align with the 0.33m scale on focusing
ring, paste calibration tool on the ring with middle line of the tool
aligning
the 0.33m scale and the scale pointer (or choose 1’1 focusing scale).
Step One :
Ready your subject and calibration tool. You can use a "Star
Chart",
or other high-resolution black-and-white objects;download the "Back focus
Calibration Tool for Prime Lens"(short for “Calibration Tool”) on the
official website.
Note :
You can download and print the chart on DZOFILM website-Down-
load-Star Chart for Adjusting Back Flange（Click to jump to the website）
5
Flange Back Adjustment
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4
2.Flange Back Adjustment
Please adjust as the following steps:
Step Four :
Set the object 0.33m away from the camera sensor plane,
and adjust it to the center of the whole image.
Step One :
Rotate the focus ring until the image to its clearest. Take the
horizontal line in the middle of the calibration tool as the reference and
observe the position of the deviating scale pointer to get the number
of
horizontal lines.
Step Two :
According to the deviation value and the reference below,
add or subtract the corresponding shim to complete the flange back
adjustment.
Note: The direction of infinity indicates positive deviation value.
The direction of the closest focusing distance indicates negative
deviation value.
If there are more than three horizontal lines, add or subtract the
corresponding value.
Example:
If the scale pointer points to 3 spaces in the direction of the closest
focusing distance, the deviation value is -3.
If the scale pointer points to 4 spaces in the direction of infinity, the deviation
value is +4. At this situation, the shim value of "+3" needs to be added to the
shim value of "+1".
Set the object 0.33m away from the camera sensor
plane, and adjust it to the center of the whole image.
T4 Aperture
6
0.33m
Φ
Back to Contents
7
Note: Shim adjustment: "+" means adding shims, and "-" decreasing shims.
Gnosis Adjustment Reference
0
0
0
0
Data Interface Usage
new system without calibration.
Specification
Specification
Name
Colour
Focal Length
Mount
Aperture
Image Circle
Construction
of Optics
Flange Distance
Close Focus
（from sensor plane )
（metric/imperial）
Max.Mag. Ratio
Iris Control
Focus Control Manual（max 300°）
Length
（metric/imperial） 112mm
Iris Blade 16
Filter Size M105
Gear Pitch 0.8M
Material Aluminium alloy
Weight 1447.5g1460g 1280.5g
∮114mm
Manual
（max 55°）
Manual
（max 67°）
Manual
（Manual, max 68°）
1.33X1.0X 1.5X
44mm(LPL)/52mm(PL)/44mm(EF)
11 Elements in
8 Groups
11 Elements in
9 Groups
11 Elements in
9 Groups
0.237m/9.36in 0.258m/10.2in0.167m/6.6in
LPL/PL/EF
∮46.5mm(VV/FF）
65mm 90mm32mm
Black
T2.8-T22
Front Dia.
(metric/imperial)
Gnosis
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