Camera Lens News
Issue No. 19
Six reasons why the Carl Zeiss Sharp Max™ is superior to other collimators
1. The Carl Zeiss Sharp Max™ uses a 72-sectored Siemens star as internal test target. This multi-sectored version provides a quick and accurate visual detection of the sharpness maximum.
Other collimators use an inexpensive 18-sectored Siemens star, compromising sharpness detection severely.

2. The Carl Zeiss Sharp Max™ is designed and built athermal, using very expensive exotic materials like INVARSTAHLŽ. This means that the sharpness readout is reliable and independent of ambient temperatures.
Other collimators completely ignore the problems associated with changing temperatures, compromising reliability severely.

3. The Carl Zeiss Sharp Max™ optics are of high quality and are corrected for spherical aberration, meaning that the sharpness readout reliably stays the same regardless of the aperture setting on the camera lens.
Other collimators use undercorrected optics of insufficient quality which produce different back focus readouts at diffenrent aperture settings on the same camera lens, making the back focus calibration unreliable and thus worthless.

4. The optical system of the Carl Zeiss Sharp Max™ provides sufficient accuracy of the collimation process for all focal lengths in the DigiPrimeŽ lens range.
Other collimators incorporate inadequate optics which cannot provide sufficiently accurate results with lenses of 40 mm and more.

5. The brightness of the Carl Zeiss Sharp Max™ test target can be user-adjusted.
Other collimators use a simple consumer grade flashlight for illumination with no means of brightness adjustment.
Rechargeable batteries can be used and can be re-charged by the Carl Zeiss Sharp Max™´s internal circuitry, once external power is connected.
Other collimators are unable to re-charge their batteries.
The Carl Zeiss Sharp Max™ can be powered externally by the camera and other power sources.
Other collimators fail to utilize external power from the camera and other power sources.

6. The Carl Zeiss Sharp Max™ can be clamped to the lens under test, so the operator´s hands are free for other work.
Other collimators need to be constantly held by hand during the complete calibration procedure.

Conclusion
In an industry in which the consistency of the final result is so critically important to the overall success of the enterprise, and where the cost of re-shooting or other post-production manipulation can be extremely high, the value of the Carl Zeiss Sharp Max™ becomes immediately apparent. Anything less would be false economy. We invite you to investigate this for yourselves.

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