Chosun:
The transparency thing you are talking about is only a subjective thing,
and there is no standard.
I am not sure about your experience with the optics you are referring
to in your evaluations. Have you owned any of these, and for how long ?
Tell us which ones, I am calling you out on your experience.
Jerry
Jeez Jerry, this takes me waaaaaaaaaaaaaaay back !
The last time anyone
"called me out" was the School Principal back in Primary School. Ya see, the school bully, thought it would be a fantastic idea to pull my hair while we were lined up waiting to go into class -- so I turned around and kicked him right in the |8.||8.| .... Ouch !! :'D
The Principal called me into her office where I was expecting a whack with the unfriendly end of the feather duster -- but stuff me if she didn't offer me cookies and a glass of milk instead ! :eat: :t: o
Yes 'transparency' can be thought of as subjective, and the thresholds will certainly be the subject of discussion - but it is underpinned by some pretty comprehensive and non-negotiable optical design parameters. As I said to Vespo - I outlined these earlier, and I have never heard of them as disputed before .....
As I also said to Vespo, there are more commonalities within our dna than there are differences ---- so we're really not expecting a lot of stuff from left field here once all is said and done. Once all the parameters and relative performance is sifted through, there is going to be fairly broad based agreement on whether a bin is 'transparent' or not ........ :cat:
There are some fairly non-negotiable 'transparency' deal breakers ...... =>
** Lack of transmission, or brightness
** Lack of sharpness
** CA
** Non-neutral colour rendition
** Obvious distortions
** Glare
** etc, etc
I think it is almost impossible from what I have seen for an S-P roof prism bin to exhibit 'transparency' due to the losses in the dielectric reflective prism coatings (even though they are less than 1%). The Swaro 10x50 SV gets about as close to it, without actually making it to a 'transparent' view.
It would not surprise me at all if the SF view was Not 'transparent' either. The brightness (even at 92%) should fall short, and even 70 dielectric layers won't get it over the line. Though it should have other qualities, such as immersive, and hopefully 'ease of view', and handles glare and ghosting well ....... we shall have to see.
'Transparency' seems to be the premise of A-K designs, and Porro designs, if the other things I mentioned make the grade.
It seems folks don't go back and read earlier posts in a discussion (well dennis never - seems Howard is trying for an unwelcome return and happy to muddy the waters) - grrrrr
I have owned some 'transparent' bins (well the Swift Audubon was transparent a lot of the time - but not all ..... you can read all the comprehensive details that I posted to the relevant thread
Alphas? .... owned? .... none!
But by crikey, have I ever kicked some tyres !!! yes sireeee !!!!
And I'd wager that I've seen more 'individual' units than a lot here ...... :smoke:
And I'll bet I've been a lot more critical, and scrutinised the optics, back to front, upside down, and round and round, than quite a few here. No 'owners' complacency and sub-conscious adjustment to the view for this amigo !
How many here have scrutinised their bins distortion characteristics by looking through the objective end -- henry outlined a dandy little method for doing so which gives a very accurate interpretation .....
I'll grant that I probably only have 99% of the picture on where a bin ranks, as there are those extraordinarily rare times in the environment where only the bins you probably own and use all the time are likely to be with you -- such as the time I saw an actual 'red' rainbow, ..... or, a 'triple', ...... but by and large I've viewed all the bins I've seen in enough varying conditions and known what to look for, to get an accurate picture. I've spent from minutes, to hours, to days and weeks with all of them.
I've seen all current Swaro's dozens, and dozens, and dozens of individual times and units (except the x56mm A-K SLC's in 8x, and 10x which I only just recently got a look at for half a day) for periods ranging from a few minutes to a few days, some, notably 8.5x42, and 8X32 SV's for weeks .....
And yes, about half the focusers tried were 'rough' - apparently a design feature for those viewing in sub-zero temperatures when I'm sensibly tucked up inside next to a log fire with a nice cup of Earl Grey tea !
)
Nikons? Similarly Yep! I've seen a few -- EDGII (so luckily no diopter knobs bouncing off the bonce), SE's = yep! (though for the life of me don't ask me what year they were made, or where into Brock's xxx xxxx serial number and coatings scheme they fit -- all I know is that the view was warm, which is not to my liking
Leica's - yes - the Ultravid HD's and latest trinnies ....
The best of Steiner's ....
Zeiss FL's (all sizes) through to HT's (x42mm's only)
As well as a lot of 2nd tier and mid-range stuff, though nowhere near the bargain basement value-sniffing experience of a Frank D
)
And a whole host of Alpha glass when I was a young whippersnapper, from my parents, and grandparents generations, when I neither knew, nor at the time particularly cared what was what.
I've also owned, or own, the current 'door knockers' in the form of Zen-Ray Prime HD's, and ED3's (the current king of ergo's), as well as a whole host of other good, and not so good badge engineered, or obscure brands ........
So all in all, certainly more than enough to comment, and not be talking through my hat !!
FWIW, I'd rate the x42mm HT's current king of the 'transparency' crop .....
Chosun :gh: