hi computar 270mm in copal 3 shutter...glass a solid 9....shutter just CLA'ed....snappy at all speeds.....i've only seen this lens for sale 4 times in 7 years...a few years ago i sold one for 1800.00.....this year i sold one for 1300.......this one is a bargain...only 970.00 conus included....the minus is no flange[ 40.00] from lens and repro...and the rear retaining ring is damaged...not harm to the imagemaking....or to any of the glass...but saves you 300.00 on the price.... this is lois conners favorite lens on 7x17.....don't miss this......thanks G