I have been using a K-01 that I had converted (by Isaac Szabo) for IR use (at 720nm), and I've used it with the DA 15/4 Ltd with some success (and, in fact, my 15/4 lives on the IR K-01). However, I'd also like to try a relatively compact ultra-wide-angle-to-tele zoom on the IR-equipped K-01 (and I don't yet own such a zoom).
I see that the great-for-a-lot-of-other-uses DA 18-135 may invoke IR hotspots (according to the Kolari Vision web site, although there is no specific info there on guilty wavelengths or apertures or focal lengths, or even whether the report(s) of hotspots have been from using lens IR filters or body sensor IR filters). However, I haven't been able to find any reports (positive or negative) about just how the DA 16-85 (which certainly does otherwise seem like a very attractive lens for regular visible light shooting) would work for an IR lens.
So, does anyone have any info regarding using the DA 16-85 as an IR lens that they've gleaned (either personally or second-hand)? Thanks for listening.
DA 15/4 on K-01 --
Last edited by fwcetus; 10-15-2017 at 05:47 PM.