Was doing some comparisons last night trying to make a final decision as to what to keep and what to sell.
Decided that I found it easier to converge the images with the 9mm Vixen over the 8.5mm Pentax.
Bought these off Matt (Kunama) late Aug last year, they're still in excellent condition with original boxes.
2x Pentax SMC XF 8.5mm $300 Posted
Also compared Vixen 20mm against TV 20mm Plossl. FOV is larger in the Vixen but the Plossls felt a lot nicer to use for myself personally. Smaller size? Different eye relief? No idea, easier on my eyes.
Bought these off Tinderboxsky early Aug last year with original boxes ect.
2x Vixen NLV 20mm $220 posted.