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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Why a 50mm objective ?
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<blockquote data-quote="Brown Dog" data-source="post: 136030" data-attributes="member: 1622"><p>[ QUOTE ]</p><p>Could you elaborate on the others. </p><p></p><p>[/ QUOTE ] Thought I had?? /ubbthreads/images/graemlins/confused.gif</p><p></p><p> [ QUOTE ]</p><p> Comparing 40 to 50mm [ <em>edit: ie by comparing exit pupil diameter</em> ]is only relevant if you are comparing scopes of the same quality.....one of 'China's Finest' scopes in 50mm will not be as good as a quality 40mm. </p><p></p><p>(Once you are comparing scopes of similar quality) do some reading (web search) on 'twilight factor' and resolving power. </p><p> </p><p></p><p>[/ QUOTE ] </p><p>This is rather a good summary on twilight Factor (good summary on transmission too) /ubbthreads/images/graemlins/smile.gif : <a href="http://www.zeiss.com/de/bino/glossary_e.nsf/frameset.html?ReadForm&amp;Redirect=/C1256E2700349659/Index/?ReadForm&amp;84" target="_blank">http://www.zeiss.com/de/bino/glossary_e....ReadForm&amp;84</a></p></blockquote><p></p>
[QUOTE="Brown Dog, post: 136030, member: 1622"] [ QUOTE ] Could you elaborate on the others. [/ QUOTE ] Thought I had?? [img]/ubbthreads/images/graemlins/confused.gif[/img] [ QUOTE ] Comparing 40 to 50mm [ [i]edit: ie by comparing exit pupil diameter[/i] ]is only relevant if you are comparing scopes of the same quality.....one of 'China's Finest' scopes in 50mm will not be as good as a quality 40mm. (Once you are comparing scopes of similar quality) do some reading (web search) on 'twilight factor' and resolving power. [/ QUOTE ] This is rather a good summary on twilight Factor (good summary on transmission too) [img]/ubbthreads/images/graemlins/smile.gif[/img] : [url="http://www.zeiss.com/de/bino/glossary_e.nsf/frameset.html?ReadForm&Redirect=/C1256E2700349659/Index/?ReadForm&84"]http://www.zeiss.com/de/bino/glossary_e....ReadForm&84[/url] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Why a 50mm objective ?
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