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.
