I am owning this bino since 1 month...and i am more than disapointed.
To be clear my background in bino world is almost non existent, but i almost prefer the optic of an cheap 90 euros porro that i have than the kowa.
Maybe i have a bad sample, but i am really surprised about the hightly enthusiastic review en allbinos!?
First my goal was to buy a cheap compact bino for trekking in the mountain, i bought an opticron oregon 4 and a bushnell trophy 8X32; there were absolutely crapy instrument (headache and nausea after using them more tha 3 minutes).
So i did chase bino in the 200-400 euros range, and bought the kowa.
In this bino i found the apparent exterior quality really really nice.
Optically the field of view is huge comparing to my cheap 7X50 paralux porro, the color rendering is natural and better than the yellow tint of the paralux....that are the only two better point !!
Brightness is a little bit more on the porro, but the huge difference is sharpness across the field of view. On the kowa it is nothing close to 91% writted on allbinos website.
The center is crystal clear, but only at 30% of this center zone the image already soften and is not quite as sharp as in the center.
Worst : the right field on both tube is far worst than the left one.
On the right tube there is a zone amost in the center (like a little cloud) that is blurrier than the outer periphery.
Strange thing is that on the crappy bushnell and opticron instruments i could put on focus the blurry periphery (with the center out of focus), which is impossible to do with the kowa.!?
So i understand that in optic you pay for what you have and it is absolutely my fault.
I have never use an alpha bino, but i think i am goint to look at it.
My visual accuity is good and it s annoying me to not have a very good image throughout my binocular.
The only thing that i don't understand is the ranking on allbino website...so i don't know if i have a bad sample...?