Hi, Rudi...
First thoughts... perhaps Aufkl.Gr.(F)121. They were known to have some of their machines camouflaged with large disruptive patches. LG1, KG54 and KG77 might also be contenders. Also, given that the last letter is 'W' and therefore possibly 12.Staffel within IV.Gruppe, it could possibly have been a unit using its IV.Gruppe as a training element, and therefore perhaps not as likely to have been a reconnaissance unit. Nice photo, though...
Regards,
Paul