General
The Leica Hektor 135mm f/4.5 is probably the least expensive Leica M lens available today – it sells for $50-$300 on eBay or the used departments of B&H, Adorama and KEH. Leica manufactured this lens between 1933-1960. The serial number of mine revealed that it is produced back in 1958. The Hektor model was replaced in 1960 by the Leica Elmar 135mm f/4. Lenses with serial numbers from 1,124,000 – 1,416,000 have a 36mm filter thread; serial numbers from 1,416,000 – 1,827,000 have a 39mm filter thread. All versions produced after the WWII were coated. The aperture has 15 blades and a range of f/4.5 – f/32. The 135mm Hektor has 4 lens elements in 3 lens groups. The angle of view is 18° and the minimum focusing distance is 1.5m/5 feet.
