7artisans M35mm F1.4 follows the design concept of the rangefinder M head to ensure that the 35/1.4 has a detailed picture quality when the 1.4 aperture is fully opened, the color is oily and transparent, and the viewing angle is excessively soft. Combining the design features of Sonnar and Biogon, optimize the design scheme. 10 Aperture blades can photograph round diffuse light spotNarrow the aperture to make a beautiful starlight. 4 Pieces of high folded glass effectively improve the edge dispersion phenomenon, improve the edge image quality. 10 elements in 9 groups Optical structure all adopt multi-layer coating process to effectively increase light transmittance and improve the appearance of glare ghosts.