MartinH Posted August 4, 2013 Share Posted August 4, 2013 Heisann Eg er ute etter ein ny kikkert til cz17hmr, har kahles 1,5-6x42 per dags dato, men er ute etter ein med vesentlig høgare forstørrelse. Har lest litt i div. trådar at det er delte meiningar om ein kikkert bør ha noko som heiter parallaksejustering. Kan nokon fortelle meg kva det er? Og fordelar/ulemper med å ha det? Våpenet blir brukt til småvilt og predatorjakt. Mvh Martin Quote Link to comment Share on other sites More sharing options...
Aannerud Posted August 5, 2013 Share Posted August 5, 2013 Parallakse justeringa er enkelt forklart en justering som sentrer tråkorset ditt på de forskjellige holdene, har du parallakse kan det gjøre att du får endring i treffpunktet..kikkerter uten denne justeringa er somregel prallakse frie på 100m.. Med 17HMR strekker du sikkert ikke holdene så langt att dette er nødvendig? Sikkert mange her som kan gi en grundig og bedre forklaring enn meg! Mvh Aannerud Quote Link to comment Share on other sites More sharing options...
Wolverine67 Posted August 5, 2013 Share Posted August 5, 2013 Fra Wiki: "Parallax in optical sights Further information: Telescopic sight#Parallax compensation In optical sights parallax refers to the apparent movement of the reticle in relationship to the target when the user moves his/her head laterally behind the sight (up/down or left/right), [26] i.e. it is an error where the reticle does not stay aligned with the sight's own optical axis. In optical instruments such as telescopes , microscopes, or in telescopic sights used on small arms and theodolites , the error occurs when the optics are not precisely focused: the reticle will appear to move with respect to the object focused on if one moves one's head sideways in front of the eyepiece. Some firearm telescopic sights are equipped with a parallax compensation mechanism which basically consists of a movable optical element that enables the optical system to project the picture of objects at varying distances and the reticle crosshairs pictures together in exactly the same optical plane. Telescopic sights may have no parallax compensation because they can perform very acceptably without refinement for parallax with the sight being permanently adjusted for the distance that best suits their intended usage. Typical standard factory parallax adjustment distances for hunting telescopic sights are 100 yd or 100 m to make them suited for hunting shots that rarely exceed 300 yd/m. Some target and military style telescopic sights without parallax compensation may be adjusted to be parallax free at ranges up to 300 yd/m to make them better suited for aiming at longer ranges. [ citation needed ] Scopes for rimfires, shotguns, and muzzleloaders will have shorter parallax settings, commonly 50 yd/ m[ citation needed ] for rimfire scopes and 100 yd/m [citation needed] for shotguns and muzzleloaders. Scopes for airguns are very often found with adjustable parallax, usually in the form of an adjustable objective, or AO. These may adjust down as far as 3 yards (2.74 m). [citation needed] Non-magnifying reflector or "reflex" sights have the ability to be theoretically "parallax free". But since these sights use parallel collimated light this is only true when the target is at infinity. At finite distances eye movement perpendicular to the device will cause parallax movement in the reticle image in exact relationship to eye position in the cylindrical column of light created by the collimating optics. [27][28] Firearm sights, such as some red dot sights, try to correct for this via not focusing the reticle at infinity, but instead at some finite distance, a designed target range where the reticle will show very little movement due to parallax. [27] Some manufactures market reflector sight models they call "parallax free", [29] but this refers to an optical system that compensates for off axis spherical aberration, an optical error induced by the spherical mirror used in the sight that can cause the reticle position to diverge off the sight's optical axis with change in eye position. [30][31]" Legg merke til at du får en feil på svært korte hold også. Quote Link to comment Share on other sites More sharing options...
Erlend Meyer Posted August 5, 2013 Share Posted August 5, 2013 Hold tomlene foran deg, ene lenger unna enn den andre. Legg tomlene "over" hver andre og flytt på hodet. Nå ser du at det bare stemmer med hodet i én posisjon. Dette er parallakse. For optikk vil trådkorset bare være helt parallaksefri ved én avstand, gjerne 100m for optikk uten justering. På denne avstanden kan du bevege øyet så mye du vil i forhold til siktet uten at siktepunktet endrer seg, for andre avstander vil avvik fra senter fungere akkurat som i eksperimentet med tomlene. Slik jeg forstår det er effekten størst ved store forstørrelser og ved avstander under parallaksefri, dette er en av grunnene til at en ofte skyter nesten like gode samlinger på 100m som på 50. Quote Link to comment Share on other sites More sharing options...
MartinH Posted August 5, 2013 Author Share Posted August 5, 2013 Oki. Kor stort utslag trur du ein kan få på feks på ein Vortex Viper HS 4-16X50? http://www.jaktfall.no/produkt/vortex-o ... te-4-16x50 Quote Link to comment Share on other sites More sharing options...
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