IR Focal
Length
Minimum
Aperture
Lens Filter Weight Notes Images Credit
35mm ƒ/2 Voigtländer 35 mm / 1:2.0 APO-Lanthar aspherical Z
KEH Adorama B&H
⌀49mm 352 g A truly impressive performer. No meaningful hotspots at any aperture and the visible red / IR color phasing is tighter than my other lenses, making 550nm/590nm-filtered false color much more usable when there are high contrast elements at the frame edges.   Michael Piantedosi