Schneider Best Form DCV Negative Lens Ø 19.5mm FL -41.1mm/-42.3
These authentic and original optical parts come directly from a surplus (close-down business in Germany). Great for DIY and research projects.
- Purpose: Carl Zeiss manufacturing process (several sources involved, including Schneider Kreuznach).
- Diameter: 19.5mm
- Focal Length: -41.1mm (-42.3mm when reversed).
- Thickness: 4.93mm
- Coating: yes (both sides unless said otherwise).
- Optical standard: unknown (most probably BK-7 substrat).
- Brand: Schneider.
- Class A: Overall excellent with no discernable flaws. Please, see pics.
- Note: this is not pure DCV (Dual Convex), but Best Form lens. BF lens means radius are not the same and they render better figures compared to DCV.