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Message: <blockquote data-quote="seaspirit" data-source="post: 1503041" data-attributes="member: 65889">The beam splitter is the fatal part.  Beam splitters are not optional, they are on all the time and split the beam (i.e. light) in a fixed ratio.  Not taking light loss due to reflection and refraction on optical surfaces and media into account your eye will always only see a % of the available light and the camera the other %.  No end will get to see full light intensity.Beamsplitters are great for specific purposes (if you want to split light in different spectra of wavelenghts) or if you have lots of it.  In telescopy and photography light is most of the time a limiting factor, and there is good reason why SLR cameras still use a mirror mechanism rather than a beamsplitter. The sensor size/type/MP is of secondary concern, because every sensor can only utilize the light the the beamsplitter reflects its way.Ulli</blockquote>