Besides being Nikon waterproof binoculars and having long eye relief (which bring quite comfortable experience for eyeglasses people), these are key things to compare: That said, the Prostaff 7s has one extra feature that makes it superior to 3s model. The prisms on the 7s are reinforced with phase correction coatings that further enhance resolution. At long distances, this is usually not as much of a factor, but at closer ranges, it can often mean that you don’t see the whole picture and thus can miss some important details. Prostaff 7 series consists of 8×30, 10×30, 8×42, 10×42 models, so the basic purpose was that in addition to standard-sized 42mm-dia models, 30mm-dia models that are easy to carry for everyone are available, providing high optical performance in a compact body.

Nikon is the older brand than Vortex. Hence, you can expect that this vendor features more prestige and experiences in terms of optics. The quality and warranty of Japanese brands are a no-brainer.

During our tests on Nikon Prostaff 3S, we found it hard to adjust the lens and rotate the wheel to get a sharper vision. Even worse, the eyecups might retract prematurely upon twisting and against your eyes whilst. Eye cups

Construction: Nikon Prostaff 3 is relatively lighter of all. However, in terms of size, Nikon Prostaff 5 10×42 is the most ergonomic one (although Nikon Prostaff 5 only shows a tiny bit of difference in size with Nikon prostaff 7 binoculars). They are all very durable. Field of view: Once again Nikon Prostaff 3s 10×42 is the best in terms of both far and near viewing ability. However, the close focus distance of Nikon Monarch 3 is also very impressive. Particularly, if you are infatuated with astronomy you can choose 10X magnification of the Prostaff 7s series. Speaking of the FOV, that of the Prostaff 7s stands at 119 m at 1000 m while the 10×42 offers 108 m at 1000 m. By comparison, Prostaff 3s 8×42 has a field of view of 126 m at 1000m and 122 m at 1000m for the 10×42 model. The roof prisms are silver mirror coated and they have multi-coated lenses. The body is fully o-ring sealed and are said by the company to be waterproof and tested to a depth of 1m for 10 minutes. The shell is filled with nitrogen gas to ensure that internal lenses do not fog up.This Agreement is governed by and shall be construed in accordance with the laws of Japan without regard to its conflicts of laws principles. In the event a dispute arises under or in connection with this Agreement, you hereby consent to personal jurisdiction of Japan and waive any objection that such forum is inconvenient. You further consent to service of process in any action arising from this Agreement by regular mail or other commercially reasonable means of receipted delivery. If any provision of the Agreement shall be determined invalid for any reason, the remaining provisions shall not be invalidated and shall remain in full force and effect. This Agreement sets forth the entire agreement and understanding between you and Nikon, and supersedes and replaces any other agreements relating to the subject matter of this Agreement. The failure of any party to insist upon strict performance of any of the terms or provisions of this Agreement, or the exercise of any option, right or remedy contained herein, shall not be construed as a waiver of any future application of such term, provision, option, right or remedy, and such term, provision, option, right or remedy shall continue and remain in full force and effect. The headings of the sections of this Agreement are inserted for convenience only and shall not constitute a part hereof or affect in any way the meaning or interpretation of this Agreement. Except as otherwise expressly provided herein, the provisions of section 3 and section 4 together with any provisions that by their express terms apply to periods after termination of this Agreement, shall survive termination of this Agreement for any reason. After testing so many binoculars, we realized a certain amount of better performance for low-light category. After all, this Nikon binoculars still perform decently, but it’s not up to our higher expectation criteria.