L50/3.5xTTL Through The Lense loupes

3.5x TTL Loupes


Model Magnification Working distance Depth of Field Field of view Weight
350S/TTL 3.5X 340mm 50mm 55mm 73g
350R/TTL 3.5X 420mm 55mm 60mm 73g
350L/TTL 3.5X 500mm 60mm 65mm 73g
350XL/TTL 3.5X 550cm 65mm 70mm 73g

Interpupillary Distance:59-61mm; 61-63mm;63-65mm

color:black loupes, black frame, black fasten belt, black clean fabric, black eyeglass case.


Through The Lense loupes (TTL) do not have the flip-up mechanism. Consequently they are lighter than the Flip-Up system.Since every TTL system needs to be custom made based on the user's Pupil Distance (PD), the cost is higher than a Flip-Up. However, some loupe users prefer the lighter weight TTL system over the convenience of the Flip-Up system.