Zeiss Cinema Zoom 15-30 User manual

ZEISS Cinema Zoom Lenses
Mount Change Instructions

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Table of Contents
Introduction 3
Explanation of Symbols 3
Overview 4
Delivery Contents of a ZEISS CZ.2 4
Technical Data 5
Changing the Mount of a ZEISS CZ.2 6
Detaching a Mount 6
Attaching a Mount 10
Adjusting a ZEISS CZ.2 to Your Digital Camera 15
Testing the Sharpness 16
Correcting the Flange Focal Distance 19
Appendix 21
Color Code of the Shims 21
Shimming Table 21
Mount Change Accessories 23
Glossary 23

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Explanation of Symbols
The information symbol indicates additional information, which is useful for the context.
The skip symbol indicates that under certain circumstances you can skip certain steps.
The result symbol indicates information about the obtained result of a step.
The warning symbol indicates dangerous situations and actions, which might impair the functionality of
the product, damage the product or hurt the user.
Introduction
In this manual you learn how to change the mount of a ZEISS Cinema Zoom CZ.2 (abbreviation:
ZEISS CZ.2) and how to match it to a digital camera. In order to explain the procedure, this
manual uses a ZEISS CZ.2 28 – 80 which is scaled in feet with PL mount. Proceed in the same
sequences to switch from or to any other mount that is available for the ZEISS CZ.2
(Canon1EF, Nikon2F, Sony3E and MFT).
1Canon is a trademark or registered trademark of Canon Inc. and/or other members of the Canon Group.
2Nikon is a registered trademark of Nikon Corporation
3Sony and E-mount are registered trademarks of Sony Corporation

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1front lens
2focus ring
3focus index mark
4lens foot
5zoom index mark
6zoom ring
7aperture index mark
8aperture ring
9lens barrel
10 groove of the lens
11 small screw
12 rear lens
13 shims
14 mount including the black inner ring
15 T6 screws
Overview
Delivery Contents of a ZEISS CZ.2
21 3 5 6 7 8 9 114
12 13 14 1510
• 1x ZEISS CZ.2
• 1x Front cap
• 1x Rear cap
• 1x Focus lever
• 3x Lens support riser 3/8"

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Technical Data
Cinema Zoom
15 – 30 mm
Cinema Zoom
28 – 80 mm
Cinema Zoom
70 – 200 mm
Aperture range T 2.9 to T 22 T 2.9 to T 22 T 2.9 to T 22
Focal length 15 – 30 mm 28 – 80 mm 70 – 200 mm
Close focus distance10.55 m / 1'10" 0.83 m / 2'8" 1.51 m / 5'
Length2198 mm / 9.92" 196 mm / 7.72" 250 mm / 9.84"
Front diameter 114 mm / 4.49" 95 mm / 3.7" 95 mm / 3.7"
Weight 2.6 kg / 5.7 lbs 2.5 kg / 5.5 lbs 2.8 kg / 6.2 lbs
Horizontal Angle of View
Full-Frame3100 – 62° 66 – 25° 29 – 10°
APS-H490 – 54° 57 – 21° 24 – 9°
Super 35579 – 46° 48 – 18° 20 – 7°
Normal 35672 – 41° 43 – 16° 18 – 6°
APS-C773 – 42° 43 – 16° 18 – 6°
MFT859 – 33° 34 – 12° 14 – 5°
1Close focus distance is measured from the image plane
2 Front to PL mount ange
3Horizontal angle of view for a full-frame camera
(aspect ratio 1:1.5, dimensions 36 mm x 24 mm / 1.42" x 0.94")
4Horizontal angle of view for an APS-H camera
(aspect ratio 1:1.81, dimensions 30.2 mm x 16.7 mm / 1.19" x 0.66")
5Horizontal angle of view for an ANSI Super 35 Silent camera
(aspect ratio 1:1.33, dimensions 24.9 mm x 18.7 mm / 0.98" x 0.74")
6Horizontal angle of view for a Normal 35 Academy camera
(aspect ratio 1:1.37, dimensions 22 mm x 16 mm / 0.87" x 0.63")
7Horizontal angle of view for an APS-C camera
(aspect ratio 1:1.50, dimensions 22.3 mm x 14.9 mm / 0.88" x 0.59")
8Horizontal angle of view for a Micro 4/3 (MFT) camera
(aspect ratio 1:1.33, dimensions 17.3 mm x 13 mm / 0.68" x 0.51")

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Changing the Mount of a ZEISS CZ.2
In this chapter you learn how to change the mount of a ZEISS CZ.2. The procedure consist of
2parts which are both mandatory to successfully change a mount. You learn how to detach the
currently attached mount and how to attach a dierent mount. To make sure the ZEISS CZ.2
works properly, additionally complete the subsequent procedure:
Adjusting a ZEISS CZ.2 to Your Digital Camera.
Detaching a Mount
You need
ZEISS CZ.2
ZEISS T6 torque wrench with a torque of 0.4 Nm
alternatively: regular T6 torque wrench with a torque of 0.4 Nm
ZEISS Interchangeable Mount Set for ZEISS CZ.2
The use of tools oered by ZEISS is highly recommended. You can purchase these tools directly from ZEISS
or your trusted ZEISS dealer. See Mount Change Accessories
Requirements
Ensure that your working space is at and leveled, in order to prevent the lens from tilting and falling over.
Ensure that the environment is clean and free from dust so that no dust particles enter the ZEISS CZ.2.
Ensure that the front lens cap sits on your ZEISS CZ.2, in order to avoid scratches.

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1. Place your ZEISS CZ.2 on a at surface with the mount facing up and the serial number facing away from you.
The serial number is located at the side of the lens foot.
The serial number varies.
2. Remove the rear lens cap.
You can now see the mount.
3. With a T6 torque wrench remove the torx screws of the mount.
The black inner ring is securely fastened to the mount at the ZEISS factory and does not need to be removed.
The mount is now loose.

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4. Carefully detach the mount from your ZEISS CZ.2.
If you are changing from a PL mount, you can directly see the shims.
If you are changing from any other mount than a PL mount, you can now see the black adapter ring.
If you are changing from a PL mount, skip Step 5 and 6, since the PL mount doesn´t have an adapter ring.
5. With a T6 torque wrench remove the torx screws of the black adapter ring.
The shape and height of the black adapter ring varies according to the dierent mounts.
The black adapter ring is now loose.

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6. Detach the black adapter ring from your ZEISS CZ.2.
1groove of the lens 2shims 3small screw in the groove of the lens
1
2
3
Now you see the shim(s) and a small screw in the groove of the lens barrel.
You successfully detached the mount
When detaching the mount for the rst time, do not remove the shims.
Never remove the small screw in the groove of the lens.

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Attaching a Mount
You need
ZEISS CZ.2
ZEISS T6 torque wrench with a torque of 0.4 Nm
ZEISS Interchangeable Mount Set for ZEISS CZ.2
The use of tools oered by ZEISS is highly recommended. You can purchase these tools directly from ZEISS
or your trusted ZEISS Dealer. See Mount Change Accessories
Requirements
Ensure that your working space is at and leveled, in order to prevent the lens from tilting and falling over.
Ensure that the environment is clean and free from dust so that no dust particles enter the ZEISS CZ.2.
Ensure that the front lens cap sits on your ZEISS CZ.2, in order to avoid scratches.
Make sure you successfully completed Part 1: Detaching a Mount

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If you are changing to a PL mount, skip Steps 1 and 2 in this chapter.
1. Carefully place the adapter ring, which came with your ZEISS Interchangeable Mount Set for the ZEISS CZ.2.
Make sure the small screw in the groove of the ZEISS CZ.2 sinks into groove of the adapter ring.
The shape and height of the black adapter ring varies according
to the dierent mounts.
2. With the T6 torque wrench tighten the torx screws using a torque of 0.4 N

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3. Place the mount on your ZEISS CZ.2:
3.I PL mount: Place the PL mount on the ZEISS CZ.2 in such a way that the groove of the PL mount lays on top of
the small screw on the lens barrel.
3.II EF mount: Place the silver EF mount on the adapter ring in such a way that the notch aligns with the aperture
index mark.

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3.III F mount: Place the F mount on the adapter ring in such a way that the notch aligns with the aperture index mark.
3.IV MFT mount: Place the MFT mount on the adapter ring in such a way that the notch aligns with the aperture
index mark.

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3.VE mount: Place the E mount on the adapter ring in such a way that the blue dot aligns with the aperture index mark.
4. With the T6 torque wrench tighten the torx screws using a torque of 0.4 N
You now successfully changed the mount of a ZEISS CZ.2.
In this chapter you learned how to detach the mount of your ZEISS CZ.2 and attach a new mount to your ZEISS
CZ.2. To make sure your ZEISS CZ.2 works properly, also complete the subsequent procedure: Adjusting a ZEISS CZ.2
to Your Digital Camera.

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Adjusting a ZEISS CZ.2 to Your Digital Camera
In the following chapter you learn how to adjust your ZEISS CZ.2 to a digital camera.
This is necessary to ensure that the ZEISS CZ.2 works properly and delivers the maximum
image quality. In order to perform this adjustment, ZEISS provides shims in dierent colors
which indicate their thickness.
You need:
Tripod
Digital camera with live view
ZEISS CZ.2 lens that needs to be adjusted
Siemens star test chart
Measuring tape or folding ruler
Flat-blade screwdriver
At least 5 m of free space
ZEISS Interchangeable Mount Set for ZEISS CZ.2
alternatively: ZEISS Shims set
The use of tools oered by ZEISS is highly recommended. You can purchase these tools
directly from ZEISS or your trusted ZEISS Dealer. See Mount Change Accessories
Requirements:
Make sure that the front and rear lens of the ZEISS CZ.2 are clean.
Ensure that the illumination is bright and uniform.
Set your camera to standard settings (cf. work settings)
Smudges and ngerprints on the lens surface can gently be removed with a soft
brush and then with a dry and clean cotton cloth. The ZEISS lens cleaning kit will give
superior results and is highly recommended for this purpose. For further information,
please watch our tutorial on how to clean your lens. https://youtu.be/syOzecbtuwg

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Testing the Sharpness
1. Fasten the siemens star test chart on a wall.
2. Mount the ZEISS CZ.2 on the camera.
3. Mount the camera on a tripod.
4. Position your camera at a testing distance according to the Shimming Table in the appendix.
The testing distance is measured from the siemens star test chart
to image plane on your camera.
5. Level the camera.

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6. Set the aperture of the ZEISS CZ.2 to T2.9 by rotating the aperture ring.
The aperture setting must not be changed during the adjustment process.
7. Activate the live view of your camera.
8. Select the maximum magnication of the live view.
9. Make sure that the center of the image aligns with the center of the siemens star test chart.
10. Set the focal distance of the ZEISS CZ.2 to longest focal length by rotating the zoom ring.
11. Set the focus ring according to the testing distance. See Shimming Table
12. Turn the focus ring to determine if the sharpness is located below or above the testing distance.
This will give you an idea if you need to reduce or enlarge the distance of the camera to the
siemens star test chart. You will need this information in a further step.
If you achieve the maximum sharpness at the testing distance according to the shimming tables,
you successfully tested your ZEISS CZ.2. No further steps are required.
13. Again, set the focus ring according to the testing distance. See Shimming Table

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14. Reduce or enlarge the distance between the test chart and the image plane of the camera by a maximum of
5cm or 2" to obtain maximum image sharpness on the live view. Keep the focus ring at the testing distance.
See Shimming Table
• If you measured the sharpness below the testing distance you need to reduce the distance between the test chart
and the image plane of the camera.
• If you measured the sharpness above the testing distance you need to enlarge the distance between the test chart
and the image plane of the camera.
15. Now remeasure the testing distance between the image plane mark on the camera body and the test chart
(=the actual distance)
• If the testing distance has changed, note the distance. The change indicates that the ange focal distance of the
ZEISS CZ.2 must be adjusted. Proceed with the steps in Correcting the Flange Focal Distance.
Do not take down the setup as you will need it again to recheck the sharpness later in the process.

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Correcting the Flange Focal Distance
1. Remove the ZEISS CZ.2 from the camera.
2. Follow the steps of chapter Detaching a Mount.
3. Determine the total thickness of the shims that already lay in the lens groove.
4. Increase or decrease the total shim thickness according to the tables in the appendix. See Shimming Table
Any combination of shims is possible to achieve the required thickness and therefore the desired ange
focal distance. Always use the closest possible combination of shims.
Example: Using a ZEISS CZ.2 28 – 80 with an PL mount, scaled in feet and a siemens star test chart at a
test distance of 7 ft, an actual distance of 7 ft 2' is measured. Due to the shimming tables, you add a
orange shim 0.102 mm to the total thickness of the shims.

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5. Use a at-bladed screwdriver or a pair of tweezers to remove or add shims.
Handle the shims carefully as they can easily kink or tear which makes them unusable.
Ensure that the colored shims lie on top of each other in the groove of the lens barrel and do not
cover the screw holes. The shims might otherwise be damaged, while screwing in the screws.
6. Follow the steps of chapter Attaching a Mount to attach a new mount.
7. echeck the sharpness of the lens by following the steps of chapter Testing the Sharpness once more.
Check the sharpness at the longest and the shortest focal length.
a. If the testing distance has changed, follow the steps of chapter Correcting the Flange Focal Distance once more.
b. If you achieve the maximum sharpness over the whole focal range, you successfully tested your ZEISS CZ.2.
In this chapter you learned how to adjust a ZEISS CZ.2.