Pure fluorite crystal objective lens- Virtually no chromatic aberration (color blur)- Lightweight, rugged magnesium alloy body- Dual fast/fine focus- Choice of compatible accessories to expand the system- A statement of style and sophistication with convincing. This special combination, together with further improved optical coatings, virtually eliminates chromatic aberration even at high magnifications. DUAL FOCUS - control with fingertip sensitivity. The dual focus mechanism offers the best possible conditions for precise focusing. The mechanism has been refined in order to be able to adjust the focus perfectly. The quick focus enables fast adjustment to bring your subject into focus with just a few gentle turns, while the fine focus enables pinpoint control with your fingertips and offers the ultimate in focusing accuracy. In addition to its superior optical capabilities, this also makes it more portable than many other models. A fully waterproof and nitrogen-filled spotting scope housing, as well as the Kowa KR coating on the front lens, make the spotting scope reassuringly robust and resistant to the elements. PERFECT FOR DIGISCOPE The TSN-99 PROMINAR is 100% compatible with our KOWA SYSTEM accessory range and gives you access to interchangeable eyepieces, a range of digiscoping adapters for DSLR and system cameras as well as for smartphones.