Binocular Configuration Chart

 

8x21

8x25

10x25

10x26

7x28

9x28

10x28

8x30

10x30

8x32

9x32

10x32

8x42

10x42

8.5x45

7x50

10x50

12x50

15x56

Magnification:

 8x 8x 10x 10x 7x 9x 10x 8x 10x 8x 9x 10x 8x 10x 8.5x 7x 10x 12x 15x

Objective Lens Diameter:

 21mm 25mm 25mm 26mm 28mm 28mm 28mm 30mm 30mm 32mm 32mm 32mm 42mm 42mm 45mm 50mm 50mm 50mm 56mm

Exit Pupil (mm):

 2.6 3.1 2.5 2.6 4 3.1 2.8 3.75 3 4 3.6 3.2 5.25 4.2 5.3 7.1 5 4.2 3.7

Twilight Factor

 13 14.1 16 16.1 14 15.9 16.7 15.5 17.3 16 17 18 18.3 20.5 19.6 18.7 22.4 24.5 28.98

 

  

Perceived Low Light Brightness:

 Bad OK Bad Bad Good OK Not Great Pretty Good OK Good Pretty Good OK Very Good Good Very Good Excellent Very Good Good Pretty Good

Low Light Detail:

 Very Bad Bad OK OK Bad Not Great OK Not Great Pretty Good OK Pretty Good Good Good Very Good Very Good Good Extremely Good Excellent Excellent

Size:

 Small Compact Compact Compact Compact Large Compact Large Compact Large Compact Small Mid-Size Small Mid-Size Average Mid-Size Average Mid-Size Average Mid-Size Average Full Size Average Full Size Large Very Large Very Large Very Large Very Large

Weight:

 Super Light Extremely Light Extremely Light Extremely Light Very Light Very Light Very Light Light Light Just Below Average Just Below Averagel Just Below Average Average Weight Average Weight Fairly Heavy Heavy Heavy Heavy Heavy
   

General Use Binoculars:

 Not Great OK OK OK OK Pretty Good Pretty Good Good Good Good Good Good Very Good Very Good Very Good Good Good Good OK

General Bird Watching:

 Not Great OK Not Great OK OK Pretty Good Pretty Good Very Good Good Very Good Very Good Good Excellent Very Good Extremely Good Extremely Good Good OK OK

Wildlife & Hunting:

 Not Great OK OK OK OK Pretty Good Pretty Good Good Good Good Good Good Very Good Very Good Very Good Good Good Good Very Good

Travel & Safaris:

 OK OK Pretty Good Pretty Good Pretty Good Good Good Excellent Very Good Very Good Very Good Very Good Good Good OK Not Great Not Great Not Great Not Great

Hiking & Walking Safaris:

 Good Very Good Very Good Excellent Very Good Very Good Very Good Good Good Good Good Good OK OK Not Great Not Great Not Great Not Great Not Great

Astronomy:

 Very Bad Very Bad Very Bad Very Bad Bad Bad Bad Not Great Not Great OK OK OK Good Good Good Extremely Good Extremely Good Excellent Very Good

 

  

Example Binocular:
Pentax UCF R 8x21 Kowa 8x25 BD Minox BV BRW 10x25 Steiner Safari Pro 10x26 Minox BD 7x28 Pentax DCF LV 9x28 Opticron BGA T PC Oasis 10x28 Swarovski CL Companion 8x30 Canon IS Image Stabilized 10x30 Swarovski EL Traveler 8x32 Pentax DCF BC 9x32 Swarovski EL 10x32 Vortex Razor HD 8x42 Vanguard Endeavor ED 10x42 Vanguard 8.5x45 Endeavor ED Meopta MeoStar B1 7x50 Meopta MeoStar B1 10x50 Meopta MeoStar B1 12x50 Steiner HX 15x56

Weight (g):

 209g 320g 259g 275g 340g 366g 261g 499g 601g 610g 499g 610g 686g 731g 771g 987g 1020g 1020g 1250g

Length (cm):

 8.4cm 11.2cm 10.9cm 10.9cm 11.2cm 11.7cm 10.7cm 11.9cm 15cm 13.7cm 12.7cm 13.7cm 15cm 15.2cm 16cm 18cm 18cm 18cm 18cm

Width (cm):

 10.9cm 10.7cm 9.8cm 12.7cm 10.7cm 11.4cm 10.4cm 11.4cm 12.7cm 11.4cm 13.7cm 11.4cm 13cm 13cm 13cm 13.8cm 13.8cm 13.8cm 14.2cm

FOV (deg):

 6.2° 6.3° 5.5° 5.9° 7.3° 5.6° 4.9° 7.1° 6.0° 8.0° 6.7° 6.9° 7.4° 6.5° 6.4° 7.21° 6.3° 5.25°  

FOV (@ 1,000 yards):

 324ft 331ft 290ft 309ft 384ft 294ft 258ft 372ft 314ft 420ft 351ft 360ft 388ft 342ft 340ft 378ft 330ft 276ft 241ft

Eye Relief:

 13mm 15.8mm 15.5mm 11mm 15mm 18mm 15mm 15mm 14.5mm 15mm 16mm 13mm 17.5mm 16.5mm 20mm 22.5mm 17,4mm 15mm 15.4mm