NL 32's vs 42's eyepiece lens & eyecup size (1 Viewer)

[Cocobolo]

Just came to my mind...simply out of curiosity. I wonder whether there's any difference in size of eyepiece lens and eyecup between NL 32's & 42's. Similarly, EL SV 32's, 42's and even 50's. Difference between CL pocket & NL 32 is evident, but wondering whether once 32's or larger do they remain just about the same or get proportionally larger as well???

 

[rodneyAB]

Just came to my mind...simply out of curiosity. I wonder whether there's any difference in size of eyepiece lens and eyecup between NL 32's & 42's. Similarly, EL SV 32's, 42's and even 50's. Difference between CL pocket & NL 32 is evident, but wondering whether once 32's or larger do they remain just about the same or get proportionally larger as well???

without measuring, yes there is a difference in eyecup diameter. the rainguards do not interchange.

 

[Cocobolo]

without measuring, yes there is a difference in eyecup diameter. the rainguards do not interchange.

Thanks for your input. Yes, I seem to recall they sell the spare parts in respect of their objective lens sizes. What about the size(diameter) of the eyepiece lens? Has anyone ever taken measurements by any chance? Or can tell the relative size difference by the look?

 

[laurencejackson]

AFAIK, the NL eyepiece lens diameter is 25mm, for both the x42 and x32s. I think I read somewhere that the EL 32 and 42s diameter is around 24mm. My SLC 8x56s are some of the largest at 29/30mm! Roger Vine's site is a good source for these figures as he tends to always measure the eyepiece, where as most other online sources never do, including the manufacturers.

 

[rodneyAB]

Thanks for your input. Yes, I seem to recall they sell the spare parts in respect of their objective lens sizes. What about the size(diameter) of the eyepiece lens? Has anyone ever taken measurements by any chance? Or can tell the relative size difference by the look?

I just now looked at the ocular lens, held my steel rule near to, and yes the difference in diameter is visually apparent. From holding the rule close it seems likely 3mm difference in diameter. I'm not one to place the rule on the lens, so i could be off by several mm. Am comparing a 12x42 to an 8x32, makes me wonder if between the 42's the ocular lens diameter is different. Ultimately this does not matter to me, There must be technical drawing that indicates those specs.

 

[grackle314]

The Swarovski VPA 2 variable phone adapter has sets of clamping rings inserts for different applications. Insert rings are numbered lightly on the inside of each ring with numbers from 1 through 5. The NL Pure 42 series uses the CA-B Clamp Adapter kit with the VPA 2. The VPA 2 User Manual indicates CA-B Clamp Adapter with no ring insert fits NL Pure 42, EL Range 42 TA, and SLC 56. The user manual also indicates the number "3" insert ring is used for NL Pure 32, EL 42/50, and EL Range 42. The BTX uses insert ring number "4", which also is used for EL Range 32 and EL 32.

Insert ring number "3" is 0.94mm, 0.037", thick in radial extent, which would change the diameter of the clamp by 1.88 mm. Looking with one's eyes may overlook 1.88 mm difference on a 45 mm diameter black rubber circle.

 

[MiddleRiver]

	ID	OD
Noctivid 8x42	26	42
Blaser Globetrotter: 25 mm	25
Swarovski NL Pure: 25 mm	25
Zeiss Conquest HD: 24 mm	24
Zeiss SFL 30: 23 mm	23	37
Zeiss SFL 40	23	38.5
Nikon Monarch HG 22.5 mm	22.5
Swarovski CL Companion: 22 mm	22
Zeiss Victory SF: 22 mm	22
Leica Trinovid HD: 21.5 mm	21.5
Meopta MeoStar: 21.5 mm	21.5
7x35 Retro	21	32
GPO Passion ED: 21 mm	21
Leica UV HD+: 18 mm	18

 

[Cocobolo]

	ID	OD
Noctivid 8x42	26	42
Blaser Globetrotter: 25 mm	25
Swarovski NL Pure: 25 mm	25
Zeiss Conquest HD: 24 mm	24
Zeiss SFL 30: 23 mm	23	37
Zeiss SFL 40	23	38.5
Nikon Monarch HG 22.5 mm	22.5
Swarovski CL Companion: 22 mm	22
Zeiss Victory SF: 22 mm	22
Leica Trinovid HD: 21.5 mm	21.5
Meopta MeoStar: 21.5 mm	21.5
7x35 Retro	21	32
GPO Passion ED: 21 mm	21
Leica UV HD+: 18 mm	18

Wow! That's pretty comprehensive. Much appreciate your input. It is my understanding that the more recent and higher-end models, the larger the ocular lenses in general as compared to the ones released earlier probably because of introduction of field flattener lenses I guess. I see there's a noticeable difference between my old EL Gen 1 10x42 (20mm) and NL 10x32 (25mm). Larger ocular lenses are more satisfying and visually pleasing as well...at least to me.

 

[MiddleRiver]

Wow! That's pretty comprehensive. Much appreciate your input. It is my understanding that the more recent and higher-end models, the larger the ocular lenses in general as compared to the ones released earlier probably because of introduction of field flattener lenses I guess. I see there's a noticeable difference between my old EL Gen 1 10x42 (20mm) and NL 10x32 (25mm). Larger ocular lenses are more satisfying and visually pleasing as well...at least to me.

It’s data taken from other’s posts to which I tried to add the ones I could confirm personally.