zen99c2

50,8mm-es zenittükör 99% reflexióval, dielektrikus védőréteggel, L/10 PtV



Márkanév: Castell
Csatlakozás: 50,8mm
Reflexió: 99%
Eltérítési szög: 90°
Szállítási súly: 1kg
EAN Code:
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139.90 EUR
(inkl. MWSt)

Perhaps the lowest price in Europe ...

... for a dielectric zenith mirror with 99% reflection?

99% reflection and long life

Thanks to dielectric (non-metallic) coating, the Castell zenith mirror not only has a high reflectance of 99%, but also a long service life. The long service life is achieved because the non-metallic dielectric surface reacts much less with the acids and bases in the air than an aluminum coating with a quartz protective layer.

Ring clamping instead of fixing screws

The 50.8mm socket of the diagonal itself, as well as the 31.7mm reduction have ring clamps with large knurled screws.


Test: checking the reflection

Test procedure: Take a test photos with a camera through the diagonal (ISO200, manual mode), then measure the brightness value in Photoshop using a histogram.
This test serves as an estimate of the zenith reflection. The following models were tested: