Pentacon 50mm und Pentacon 500mm
48:23
Apparturesystem Repair: Lensrepair of the Pentacon 300mm f4
6:50
This is a Great Starter Lens - Pentacon 50mm f1.8
10:59
The CHEAPEST 500mm Lens for WILDLIFE - How Good Can it be?
1:25:24
Warum ich meine Vollformat abgeben werde.....
32:00
Canon MP-E 65mm f/2.8 1-5x Macro Photo REVIEW (RUSSIAN)
17:42
Meine Teleobjektive für die Tierfotografie
5:29
Pentacon 135mm: Orestor versus Electric - 15 blades versus 6 [Vintage lens comparison]
36:09