besides being slightly brighter, what does 50mm do over 42? better resolution? (1 Viewer)

3

308CAL

Well-known member

• Nov 25, 2007

• #1

50mm bino's have less FOV than their 42mm counterparts. besides brightness, what do the 50mm offer as an advantage. does the larger objective offer better resolution/detail or a larger sweet spot?

 

B

black lark

Registered User

• Nov 25, 2007

• #2

308CAL said:

50mm bino's have less FOV than their 42mm counterparts. besides brightness, what do the 50mm offer as an advantage. does the larger objective offer better resolution/detail or a larger sweet spot?

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brightness is the most important one, also when you want a 12x binoculair its better to take 50mm because 'again' for the brightness. i have a 10x42mm and a 12x50mm in use .

 

3

308CAL

Well-known member

• Nov 25, 2007

• #3

i am saying comparing an 8x42 ultravid vs an 8x50 ultravid.... anything besdies brightness? the focal length must be longer in the 50 as its a longer bino

 

B

black lark

Registered User

• Nov 25, 2007

• #4

308CAL said:

i am saying comparing an 8x42 ultravid vs an 8x50 ultravid.... anything besdies brightness? the focal length must be longer in the 50 as its a longer bino

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focal lenght is not a point here, the 50mm is brighther,but has less field of view, is heavier ,and smallest focussing distance is further away than the 42mm, so i would take a 8x42mm , and when i want a 12x i would take a 50mm, but i will give you 1 advice , when it is for birding and you have only 1 binoculair take a 10x42, 8x is sometimes not enough.

 

N

NWBirder

Just Need One More Pair

• Nov 26, 2007

• #5

50mm will hae longer minimal focus distance than 42mm binoculars. Other than brightness, there is not much benefit for using 50mm over 42mm.

 

E

edz

Well-known member

• Nov 27, 2007

• #6

Well, not specific to the two models mentioned above but in general, much of what was stated above is not "always" true.

Examples
Nikon 8x32 vs Nikon 10x42. 10x42 has shorter close focus.
Fujinon 10x50 has a wider fov than 8 different 8x40, 8x42 and 10x42.
another 3 10x50s equal or exceed the fov of two other 42s
one particular 8x42 exceeds the brightness of 2 different 7x50s (as measured by faintest light delivered).

edz

 

Last edited: Nov 27, 2007