![]() back Infinity OptiphotsRelated discussionsOptiphot 100 / 150Infinity-focused Optiphot trinocular headsNikon Optiphot (CF) M Plan & EPI objectives have 210mm tube length."F" trinocular head objective rays focus directly at 210mm; "T" and "UW" heads convert rays to near infinity around prisms: ![]() Nikon's CF PL chimney has an M50x0.75 external thread and positive lens. ![]() scars from failed attempts to unscrew M40x0.75 thread Removing that chimney (or at least pos. lens) passes infinity rays... Alternatively, removing that negative lens would focus infinity objectives, but with a bit under a 0.5x magnification. 200mm zoom telephotoA camera with (250mm) telephoto lens focused at infinity,as discussed on photomacrography.net: ![]() Canon 90D+250mm ... captured these images: ![]() calibration slide same target as below ... however those strongly vignetted images are magnified about 3X relative to oculars: ![]() ocular scale   (image by iPhone) This scale issue is addressed by T / UW "direct" projection and arguably better using a Zeiss Triotar. Other Optiphot infinity configurations
- LV100D is a manual model of the Nikon LV100 series (2005). instructions - configuration guide ...then in 2012 by LV-N 100 / 150, which use CFI60-2 TU Plan EPI and BD objectives. There are also TU Plan ELWD EPI + BD, as well as T Plan EPI SLWD objectives. |
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