Yesterday, I picked up a second-hand Zeiss Distagon 4/18mm ZM for some landscape and general wide-angle photos. Since the Zeiss 18mm has a 58mm filter size, and my Lee filter kit contained a 58mm adapter, I wanted to see if that would work.
While browsing my filter set I found found my IR filter, and decided to give that a try. It turns out that the M10 sensor is able to record infrared, but you need relative long exposures (just like my Fuji X-T1), since it's not specially prepared/adapted for IR.
While doing some test shot (out of hand) outside in the full sun I noticed that the Zeiss Distagon has some internal reflection issues while shooting infrared. Can you spot those issues?
Answer: It's bokeh-balls where you don't expect them.
Off-topic: Did Zeiss stop producing the Distagon 4/18mm ZM? It's no longer listed on their website.
The Distagon 4/18mm is missing from their ZM lens line-up