John A Roberts
Well-known member
In terms of objective information and deceased equines . . .
We know from information published by Leica, that the particular models in the BA/ BN series and those in the Ultravid BR/ HD/ HD+ series,
do have the same number of lenses e.g the 10x42 BA verses the 10x42 HD
See posts #19 and 21 at: https://www.birdforum.net/threads/what’s-your-favorite-7x42-binoculars.379534/#post-3877716
However as I noted, this does not mean that the lenses have remained identical in terms of shape, composition and spacing,
in the 30 years since the introduction of the BA *
One would reasonably expect that the designs were refined over time, especially with the introduction of the new Ultravid body
In support of this, compare the eyepieces of the 8x42 BA and the 8x42 UV HD. The front and rear eyepiece groups have clearly been modified,
if only to allow for the different mounting of the lenses
It seems clear that optically the Ultravids are a refinement rather than a reimagining of the original BA/ BN line
* With many products it’s not unusual for engineers to repeatedly revise a design during production, for a variety of reasons
e.g. to address weak points, to use different sourced materials, to incorporate newer production technology
It’s just that typically consumers are not aware of such internal changes
- - - -
In relation to the newer Trinovids information is scarce . . .
Leica has stated that the 8x42 and 10x42 Trinovids (those from 2012 to 2016) each had 9 lenses per side, so again consistent with the above
And while there’s a drawn cutaway of the 8x42 version, it’s not all that informative in terms of detail
In contrast, I’ve not seen any similar detail for the current 2016 HD version of the Trinovid
However, in comparing the specifications for the 2012 and 2016 models note the differing eye relief, which would indicate a modified eyepiece
(and as can be seen, while the 2012 Trinovids had the same ER as their Ultravid counterparts, they had slightly less FOV)
John
We know from information published by Leica, that the particular models in the BA/ BN series and those in the Ultravid BR/ HD/ HD+ series,
do have the same number of lenses e.g the 10x42 BA verses the 10x42 HD
See posts #19 and 21 at: https://www.birdforum.net/threads/what’s-your-favorite-7x42-binoculars.379534/#post-3877716
However as I noted, this does not mean that the lenses have remained identical in terms of shape, composition and spacing,
in the 30 years since the introduction of the BA *
One would reasonably expect that the designs were refined over time, especially with the introduction of the new Ultravid body
In support of this, compare the eyepieces of the 8x42 BA and the 8x42 UV HD. The front and rear eyepiece groups have clearly been modified,
if only to allow for the different mounting of the lenses
It seems clear that optically the Ultravids are a refinement rather than a reimagining of the original BA/ BN line
* With many products it’s not unusual for engineers to repeatedly revise a design during production, for a variety of reasons
e.g. to address weak points, to use different sourced materials, to incorporate newer production technology
It’s just that typically consumers are not aware of such internal changes
- - - -
In relation to the newer Trinovids information is scarce . . .
Leica has stated that the 8x42 and 10x42 Trinovids (those from 2012 to 2016) each had 9 lenses per side, so again consistent with the above
And while there’s a drawn cutaway of the 8x42 version, it’s not all that informative in terms of detail
In contrast, I’ve not seen any similar detail for the current 2016 HD version of the Trinovid
However, in comparing the specifications for the 2012 and 2016 models note the differing eye relief, which would indicate a modified eyepiece
(and as can be seen, while the 2012 Trinovids had the same ER as their Ultravid counterparts, they had slightly less FOV)
John
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