2.5x TTL Loupes
Model | Magnification | Working distance | Depth of Field | Field of view | Weight |
---|---|---|---|---|---|
250S/TTL | 2.5X | 340mm | 80mm | 90mm | 60g |
250Rs/TTL | 2.5X | 420mm | 90mm | 100mm | 58.5g |
250L/TTL | 2.5X | 500mm | 110mm | 110mm | 60g |
250XL/TTL | 2.5X | 550cm | 120mm | 120mm | 60g |
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.