![]() ![]() At the distance of 100 m, both the intermediate image and the reticle coincide. We could also have taken the second image plane, this is basically irrelevant for the parallax compensation. The reticle is mounted in the first image plane. Parallax compensation set to 100 meters, magnification 20x. From right: focus test with Schmidt & Bender PMII – The large target in the center is at 200 meters and The small disk on theĮxtreme left is in focus. Consequently, this means that if the parallax compensation is set so that the target image is sharp, then the riflescope is also set parallax-free at this distance.įrom left: Schmidt & Bender PMII – ParallaxĬompensation set to 100 meters, magnification 20x. Parallax compensation not only avoids parallax errors but also always presents a sharp image. The sporting shooter and the hunter who can't avoid the long distance and wants at least 15x magnification needs parallax compensation because with the higher magnification the target image is less sharp. At all other distances, near or far, the system is not parallax-free without parallax compensation, nor is it properly focused. This means that – even when looking through the scope at a slight angle – there is no deviation with respect to the aiming point. The riflescope is actually parallax-free at this distance (100 meters). The intermediate image falls exactly on the same plane, the first image plane. The diopter compensation is adjusted so that the reticle is in focus. We mounted the reticle in the first image plane (red dashed line). We have drawn it in our example – picture above – to explain the function of the parallax compensation. It is normally only used when the scope is equipped with a "side focus" (in older scopes it would be placed on the objective bell). The focusing lens, however, is not part of the standard scope. In the graphic, this situation is shown in the upper sketch. In principle, yes, but only at the distance to which the manufacturer has set the optics to be parallax-free – which is usually 100 meters. Zeiss HT 1.5-6x42, Leupold VX-3 European 3.5-10x50, Schmidt & Bender PMII Test scopes (from left): Meopta Meostar R1 1-4x22 RD, ![]()
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