Meyer-Optik Helioplan and Carl Zeiss Jena Tessar: 40/4.5 both

The Meyer-Optik Helioplan and the Carl Zeiss Jena Tessar lenses.

Both are 40mm. They are both f/4.5 fast. They both have non-retrofocus optical designs (with the M42x1 mount).

I didn't test them side by side. The Tessar most likely has a higher resolution. However, I personally prefer the Helioplan.

See also related notes:

• Carl Zeiss Jena Tessar 40/4.5 (M42x1): Non-retrofocus lens (2025-06-21)
• Meyer-Optik Helioplan 40/4.5 (M42x1/45.5): Simple dialyte lens (2024-05-09)

Image albums:

• Carl Zeiss Jena Tessar 40/4.5
• Meyer-Optik Helioplan 40/4.5