The ZEISS Siemens Star Test Chart is a professional lens chart that has been used for decades to set the back focus on lenses used on individual cameras. It is especially useful when adjusting a ZEISS CP.2 cine lens for use on a DSLR camera after the lens mount has been converted from PL to another type (such as EF), or vice versa.
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Key Features
- For Adjusting Lens Back Focus
- Aligns CP.2 Lenses for DSLRs
The ZEISS Siemens Star Test Chart is a professional lens chart that has been used for decades to set the back focus on lenses used on individual cameras. It is especially useful when adjusting a ZEISS CP.2 cine lens for use on a DSLR camera after the lens mount has been converted from PL to another type (such as EF), or vice versa.
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ZEISS 1849-755 Overview
ZEISS 1849-755 Reviews
Not suitably sharp for macro photography calibration. This chart is printed on an inkjet printer.
By Logg
Rated 2 out of 5
Date: 2026-01-29
The price is actually cheaper than a lot of other "professional" Siemens star test charts, however it is more expensive than my local options for high quality inkjet prints. I can tell that it is printed on an inkjet printer because there is a grid of yellow dots across the entire image. This is a common artifact on inkjet printers, and I read a long time ago that it is supposedly for security, so that printed documents are able to be fingerprinted back to the specific printer that printed them. As a result of being printed with an inkjet printer, the lines on this chart are not very sharp at the edges; the edge wobbles. The wobbly lines occur for at least a couple reasons: 1. Ink from the inkjet printer bleeds through the paper a very short distance before it dries 2. Inkjet printers typically can only support up to 600 dpi input files, even when they claim to support 1200 dpi or 2400 dpi printing. There are a couple places where the line apparently shifts 1 pixel (0.001667 inches) as a result. See the attached photos from my Sony A7RV taken at 61 MP (recompressed to HEIC format for filesize on B&H Photo Reviews). The second photo is just a center-crop of the first, for easier viewing. The Sony GM 100mm Macro lens (released Sept 2025) was used for this photo, at its natural closest focusing distance, which on mine is about 9cm from the target. Ironically, the cheap printing on the 2 dollar keychain tape measure I've included in the picture for scale might be more suitable for my purposes, due to the unintentional fine cross-hatch pattern produced during manufacturing. If you do not intend to use this chart for macro photography, but instead place it very far away (or use it for lower resolution work), this is completely suitable. However, in that circumstance, any Siemens chart printed at home is also completely suitable.
Just works. Reasonably priced.
By M E
Rated 5 out of 5
Date: 2022-05-10
I actually have 5 of these. One for each corner of frame + middle. I only do landscapes now. But getting the absolutely sharpest print up to 48 or 19' with pano stitching requires me to know my lenses very very well. I use only Zeiss manual focus lenses, so I can tweak depth of field and sharpest image. When I used 23 megapixel cameras, I could take 1 manually focused shot and get a very sharp image with great depth of field. From 30 megapixels and higher, you can tell a bigger difference in the sharpness at different distances. These charts are very helpful to understand my lenses to maximize those megapixels and high quality lenses. Use as first check on new lenses for decentering and tilt. Mount them on plywood and use in the field to help understand my focus points for focus stacking on my wide angles. As well as evaluating sharpest F stop without field curvature. Your mileage may vary.
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Is this chart suitable for general lens testing ?
Is this chart suitable for general lens testing ?
The ZEISS Siemens Star Test Chart is designed specifically for back focus testing on lenses. The Vocas Back Focus Chart & White Balance Card (A2), BH #VO04000007, would be a good option for general testing.
Date published: 2025-04-02
How to use it? Any Youtube video?
How to use it? Any Youtube video?
The ZEISS Siemens Start Test Chart is used when adjusting the back focus of the ZEISS cinema lenses with the Interchangeable Lens Mount system. An overview of this process can be viewed at: https://www.youtube.com/watch?v=NJTewQ-V3rM
Date published: 2019-07-22
How large is this chart? How long and how wide in ...
How large is this chart? How long and how wide in inches?
The overall dimension of the ZEISS Siemens Star Chart is 11 3/4 X 16 5/8 in and the target area is 9 3/4 X 9 5/8 in.
Date published: 2022-08-02