This is not a comprehensive list of all binoculars but it gives a big clue as to what to expect
from many of the different models on the market, both new and pre-owned.
These figures have been taken from details on actual binoculars.

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Magnification
and front lens size
Comments
Degrees
FOV in feet
at 1000 yards
FOV in metres
at 1000 m approx
6x24
11.5
604
201
7x35
wide angle
10.5
551
184
7x20
9.5
508
170
7x35
wide angle
9.25
490
163
8x30
extra wide
9
472
157
8x40
extra wide
9
472
157
8x-15x50
wide angle zoom @ 8x
8.75
460
153
8x30
extra wide
8.75
460
153
8x40
wide angle
8.5
445
148
8x30
wide angle
8.5
445
148
7x24
8.25
430
143
8x32
wide angle
8.25
430
143
8x30
wide angle
8.25
430
143
8x20
7.75
405
135
6x18 / 7x18 / 8x20
7.5
395
132
8x30 / 8x32
7.5
392
132
7x50
7.5
392
132
8x42
  
7.4
390
131
7x50
7
372
124
10x40
7
367
122
10x50
wide angle
7
367
122
8x25
  
6.8
357
119
8x56 / 10x52
 
6.6
348
116
7x50
6.6
348
116
6x-12x21
zoom @ 6x
6.5
336
112
8x32 / 10x26
6.5
354
118
8x40 / 10x56 / 10x42
6.5
341
114
7x-15x35
zoom @ 7x
6.5
325
108
10x40 / 8x42
6.5
325
108
6x-18x35
zoom @ 6x
6.25
314
105
8x21 / 8x26 / 8x28
6
304
101
7x-15x35
zoom @ 7x
6
300
100
10x25 / 7x50 / 8x42
 
6
300
100
12x40
  
6
300
100
7x-21x40
zoom @ 7x
5.5
288
96
10x25
5.5
288
96
10x20
5.5
290
97
10x50
5.5
288
96
10x60
  
5.3
280
93
7x-21x40
zoom @ 7x
5.5
288
96
8x-15x50
zoom @ 8x
5.25
280
93
8x-16x40
zoom @ 8x
5.25
280
93
10x50 / 12x32 / 10x28
5.25
272
91
12x50 / 10x50 / 10x42
5
262
87
8x-20x50
zoom @ 8x
4.7
240
80
12x50 / 15x70
 
4.5
218
73
16x50 / 15x70
 
4
198
66
15x70
3.5
173
58
20x60
3.5
183
61
20x80
  
3.25
169
56
20x50 / 20x60 / 20x80
3
157
52
25x100
  
3
157
52
25x100
  
2.5
144
48
35x50
1.5
73
24

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