Dennis, the Maven B2 9x45 is one thing - it ticks a lot of boxes, except focus direction (for me) , and weight, CA would be a question mark for me too. So, I can understand that one, particularly if you are in the minority and your eyes have a lot of barrel distortion and you are prone to rolling ball phenomena, and you appreciate a smoother focuser (b*mmer about that direction though!
I have only ever used the Swaro focusers comfortably above freezing point (Celsius at that) , and none of them felt as good as Zeiss or high end Nikon focusers at those temps - at best they don't exactly wow, and at worst they feel coarse or even gritty. I have checked with the global powers that be though, and it is a very deliberate decision so that they perform consistently in lower temperatures. The only fair test is to compare the feeling of the Swaros vs whatever at those freezing temps if you are crackers enough to want to be out birding then.
However, the Tract, is basically some form (lesser?) of Razor HD, or Conquest HD. It ain't no Alpha - it can't be. That Fov is 2nd rate in the 8x.
You said,
"It may be a similar design but there must a LOT of tweaking between the different manufacturers of Kamakura produced binoculars. I see considerable differences between the Tract Toric, ..... and the Zeiss Conquest HD in optical performance".
A LOT? really? how on earth so? That's not logically possible, and it's even less possible that the cards would fall in favour of Tract. Zeiss would sell a hell of a lot more 8x Conquest HD's worldwide than the 8x Tract Toric. Therefore Zeiss would be on much bigger volume discounts, and would strong arm more stringent quality level agreements.
When the prism assemblies are made, lenses ground, and coatings applied, you can bet that all the 'A' grade stuff, the highest number of layers, and most flawless coatings, the lowest inclusion glass, etc probably gets funnelled into Zeiss production batches. I wonder how much of the Tract is actually made in Japan, and how much is outsourced to their Chinese Subsidiary .....
At your behest, I have taken the 8x43 ED3, and reduced the wide 426ft Fov way down to the 377ft of the Tract. :eek!: Holy Smokes !! :smoke: You are Right !!! I now have a bin that not only has some of the best CA handling and Brightness around, but it is now sharp to the edge with way more 3D effect than the Swaros. It is totally Alpha class. Better even. All for $400 !
Pity about that straw-like Fov though :scribe:
Just call the 8x Tract for what it is, decent mid tier type performance for $650. It may suit some people sufficiently that they can overlook the narrow Fov, and not feel the need to travel further down the Alpha route. Replacement it ain't though. :cat:
I just checked on ebay - no Tracts for sale ........ Yet .....
Those $1500 8x42 SF 444ft Fov Zeiss have got to be looking mighty tempting to you by now ........ :brains:
Chosun :gh: