Samyang 135mm F2.0 Camera Lens for Canon EF full frame and APS-C with field test by Teleskop-Service

Samyang MF 135 mm f/2.0 - Manual Telephoto Lens for Canon EF

The fast telephoto lens with manual focusing is more than an insider tip for astrophotography. The good performance of this lens is now well known. It is also ideal for landscape and animal photography, wherever the focus is on very high optical performance. The elaborate optical and mechanical construction guarantees durability and reliable function even under extreme conditions, such as when used on cold, clear winter nights.

Astrophotographic results achieved with this camera lens on Astrobin
Here you will find astrophotographs taken with this lens: Link to Astrobin

In this way, Teleskop-Service guarantees consistent quality and saves unnecessary returns:
Each MF 135mm comes with a field test from Teleskop-Service, which was carried out under laboratory conditions with a full-frame camera. The serial number, which is also on the lens itself, is printed on the field test. This makes it impossible to confuse the lens. Of course, the test was carried out with the full aperture, i.e. at f/2.0. A slight stopping down improves the sharpness performance in the field considerably.

Application tip from Teleskop-Service - precise focusing on the star:
Although the 135 mm lens has a sensitive focus, precise focusing, especially with high-resolution sensors, on a small mount or astro tracker is a test of patience. The TeleFokus system from Teleskop-Service offers good assistance. With just a few simple steps, the micro-focusing is adapted to the lens and you can now adjust the focus to an accuracy of 1/100 mm and the focus position remains fixed. This ensures perfect stars - right from the start.