Handevision IBELUX 40mm f/0.85 manual focus lens

see also:

• a catalogue of Micro Four Thirds lenses
• Cosina Voigtlander Nokton 42.5mm f/0.95

• introduced in 2014
• a high quality manual focus lens designed for cropped sensor cameras utilising telecentric optical design and is the widest aperture lens in terms of f ratio designed for mirrorless cameras
• interesting optical design includes a concave front element
• available in Sony NEX, Fuji X, Canon EOS M and Micro 4/3 digital mirrorless camera mounts
• see manufacturer's web page: http://kipon.com/en/articledetail.asp?id=60

• manual focus
• aluminium body
• 40mm f/0.85
  • ⇒ full frame DOF and FOV equivalents:
    • 60mm f/1.3 on DX;
    • 64mm f/1.4 on APS-C;
    • 80mm f/1.7 on MFT
• image circle 28.4mm
• 10 elements in 8 groups
• 10 circular blades
• 67mm filter
• built-in lens hood
• optimised for focus at 2.5m giving 1.6 x 1.1m subject size using a APS-C camera
• close focus to 0.75m giving a subject size of 60cm (1:20 macro) using a APS-C camera
• significant vignetting wide open
• lateral CA 6micron
• relatively soft wide open, sharpest at f/5.6
• 74mm diam x 128mm long
• 1150g
• MSRP is $2,080 USD