Seemed okay for price. Bought at CleySpy, with second hand tripod, compared at time with Delta 70. Loads better looking at pigeons on church from there. Delta had lots of colour fringing ,this didn't! Weeks later stood side by side with Opticron 80mm 800 , yes that WAS better but not 650 for a total amateur. Have used since for digiscoping. Bought a T2-M42 adapter on ebay, screws straight on the zoom lens with rubber removed. 15-or 20mm ext tube from SLR days and fitted film 35mm camera. works a treat. Also machined up nylon adapter to fit inside the extention tube to fit lens on fuji A340 digital. This works well except checking focus on small screen is awkward and needed my 3x reading glasses. I took scissors to supplied carry case for focus wheel and tripod mount areas, sothat I could leave it on at all times. This just saves a knock or two in the car. Paid 149


