○ Format: Zoner type 4 groups 5 elements,  All-sided multi-coating   L50mm f1.37 lens　

○Size: π50×L37.5mm   Wt:123g (Set 143g)   Filter Hood: 49mm

〇Mount: Leica M Mount      Color: Black

〇 Ultra-light and compact

〇 5 zorner-type lenses in 4 groups

・Explanation

Sonnetar 1.5/50 surprised everyone with the sharpness of the opening by the seventh aberration, which is outstandingly bright and good with the goodness of wetness.  It is by far  bright and good at f1.5 without coating with a large-aperture lens invented in 1932 by the genius Mr. Bertel who moved to Zeiss, and seven in three groups. In the postwar2 when developing SLR, the short back focus and the invention of coating made it mainstream in the Gaussian type, and the zonar lens disappeared from the 50mm lens series. As an I attach importance to originality, I was particular about the zonar type and developed a high-performance lens that exceeds gauss, and this time we have decided to release Sonnetar 1.3/50.

It was commercialized as a lightweight SLIMTIYP of 125 g. A beautiful color reproduction with good pullout without flare by frame correction by floating of all 8-sided multicoat and rear lens further polished high performance with sharpness by high resolution by 7th correction of ball aberration. F2 to Madeha sharpness improves to reach the highest level at f4 to .6. Astigmatic   aberration S and M approach and the image shape is beautiful. Distortion is also ±0.35, which is minimum. The blur is also beautiful by 14 pieces of iris.