In terms of ventilation was fouled quickly, certainly it is a well-ventilated scanner but never went into protection even APRS 2 days non-stop.
For the shutter blade no problem with that veil of heat or noise abroad.
The beam and the optical head is admirable, a lot like the Clay Paky (Compar on Tiger Mini Scan and Scan HPE).
The carcass is also well done, trs is "old school" compared what is now found in tt with plastic corners, is the pure mtal from top to bottom and strong will.
I bought 8 and I will keep much longer.
In rsum fully satisfied!