For about a year I owned the first iteration (pre-2002) of the Fujinon 10x70 FMT-SX. I did exhaustive side by side tripod mounted comparisons with the Fujinon 10x50 FMT-SX in an effort to decide which to keep.
In the 10x70, the star colors were vibrant and had that "sparkle" that Erik mentioned, as compared to the 10x50 FMT-SX. Red stars were rich and jumped out to my eyes. Also the 10x70 offered a very relaxed ease of viewing due to the higher eye relief and classic 50-degree afov. The two things most unexpected were: 10x70 by day rendered tree bark and the red seed pods of Dogwoods quite dramatically richer and brighter than the 10x50. I mean really much better than the 10x50 to my eyes. The daytime first quarter Moon appeared to have a warm yellow hue by comparison to the clinical chalky white of the 10x50. Huh? I couldn't believe it. The old leaded glass and optical coatings VS the new glass and coatings? And I was able to discern, by day or night, fine pin point craters easier in the 10x70. The winner was the 10x50 FMT-SX due to immersive afov and light weight compact size. Plus the important fact that in no way could I glimpse, under my skies, any improvement in, especially, the detection of threshold galaxies.
But I want a better 10x70 anyway for when I get to dark skies. Nikon 10x70 most likely. The newer post 2002 Fujinon appears to have a handful of slight advantages over the Nikon however, according to SMark in his comparisons, who sold the Nikon 10x70 and kept the new style Fuji 10x70.
I like the Nikon build quality (have the 18x70) and dislike the post 2002 Fujinon revision with the rubber prism coverings etc.,(had the post 2002 Fuji 16x70 for 10 years) plus the smell of the adhesive Fujinon uses to bond the rubber is irritating and really distracts.
Picture this: The observer is immersed in a star field vista with parallelogram mounted Fuji 10x70/16x70/10x50, nostrils crushed into the absurd oversized eye pieces, when all of a sudden... this stink of glue and rubber just seeps in and wrecks the experience. Yeah. Big reason I sold the 16x70 was that right there
Edited by EverlastingSky, 04 May 2021 - 07:43 PM.