Chart of Pocket Optics


Pocket Binoculars Chart
From an Article
by Michael and Diane Porter
Bird Watcher's Digest,
March, 2002

The following two tables (Roof Prism and Porro Prism) show the pocket binoculars tested for the Pocket Optics article.

Both tables show the models with highest magnification at the top. Within one magnification, the higher resolution scores lead the list.

Key to the Chart.

Roof Prism Pocket Binoculars

Maker Model Power

Prism Design

Wt. (oz.) Eye Relief (mm.) Close Focus (ft.)
Nitrogen filled

Eyecups

Length (in.) Width (in.) Depth (in.)
Strap Design
Strap Width Dangle Factor

MSRP

10x
8x
7x
Leica Trinovid BCA 10x25 Roof 8.6 13.7 16.4
10
Resist
285
No
FMC
Yes
snap
4.3 2.5 1.5
cord
1/8 straight $429.00
Zeiss ClassiC 10x25 Roof 7.1 14 18
10
Yes
285
No
MC
Yes
fold
4.4 2.4 2.0
cord
1/16 straight $429.95
Minox Minox BD 10x25 Roof 10.2 17 9.5
9
No
261
Yes
MC
Yes
twist
4.3 2.5 1.8
cord
3/32 head-in $159.00
Pentax DCF MC 10x25 Roof 10.4 17 6.6
9
No
261
No
FMC
Yes
twist
4.4 3.8 2.5
strap
1/4 straight $229.00
Swarovski Pocket 10x25 Roof 8.1 13 16
9
Yes
285
Yes
FMC
Yes
snap
4.3 2.4 1.8
strap
3/16 toe-in $576.00
Weaver Compact 10x28 Roof 8.8 10 19
9
Yes
254
Yes
FMC
No
fold
4.3 3.0 2.0
strap
1/4 toe-in $218.99
Brunton Compact Eterna 10x25 Roof 12 17 13
8
Yes
260
Yes
FMC
Yes
snap
4.6 2.8 2.0
padded
1 1/4 head-in $229.00
Tasco EXP Waterproof 10x25 Roof 12.6 8 16
8
Yes
345
Yes
FMC
No
fold
4.3 4.0 2.4
strap
1/4 toe-in $169.99
Tasco Amphibian 10x25 Roof 12.9 13 13.5
7
Yes
315
Yes
FC
No
fold
3.8 3.3 2.0
cord
1/16 head-in $49.99
Canon Compact 10x25 Roof 10.6 11 9.8
5
No
275
No
MC
No
fold
4.1 2.6 2.0
cord
3/32 head-in $140.00
Weaver Compact 8x24 Roof 7.9 10 17
8
Yes
315
Yes
FMC
No
fold
3.9 2.8 2.0
strap
1/4 toe-in $204.99
Deutsche Optik B/Ga Compact 8x22 Roof 11 14 13
8
Resist
360
Yes
FMC
Yes
fold
4.0 2.8 2.0
cord
3/16 straight $199.00
Pentax DCF MC 8x22 Roof 10.4 17 9.8
8
No
330
No
FMC
Yes
twist
4.4 3.8 2.5
strap
1/4 straight $209.00
Swarovski Compact 8x20 Roof 7.6 13 13
8
Yes
345
Yes
FMC
Yes
snap
3.8 2.4 1.8
strap
3/16 toe-in $521.00
Zeiss ClassiC 8x20 Roof 6.3 14 10.8
8
Yes
345
No
MC
Yes
fold
3.8 2.3 2.0
cord
1/16 straight $399.95
Leica Trinovid BCA 8x20 Roof 7.9 13.9 9.8
8
Resist
345
No
FMC
Yes
snap
3.6 2.5 1.5
cord
1/8 straight $399.00
Minox Minox BD 8x24 Roof 10.4 18 9.5
7
No
273
No
MC
No
twist
4.3 2.5 1.8
cord
3/32 head-in $149.00
Brunton Lite-Tech Compact 8x25 Roof 12 12.5 28
6
Yes
429
Yes
FC
No
fold
4.3 4.4 2.3
strap
3/8 toe-in $99.00
Brunton Compact Eterna 8x25 Roof 12 18.5 9.1
6
Yes
270
Yes
FMC
Yes
snap
4.6 2.8 2.0
padded
1 1/4 head-in $229.00
Opticron Aspheric LE 8x25 Roof 10.3 22 6.6
6
No
298
No
FMC
Yes
twist
4.4 2.8 2.5
cord
3/32 head-in $115.00
Eagle Optics Explorer 8x22 Roof 7.76 10 6.6
6
No
370
No
MC
No
fold
3.8 2.8 2.6
cord
1/8 head-in $59.00
Nikon Titanium 7x15 Roof 6.5 12 5
8
No
345
No
FMC
Yes
fold
3.1 3.6 2.0
cord
1/8 straight $774.95

Porro Prism Pocket Binoculars

Maker Model Power

Prism Design

Wt. (oz.) Eye Relief (mm.) Close Focus (ft.)
Nitrogen filled

Eyecups

Length (in.) Width (in.) Depth (in.)
Strap Design
Strap Width Dangle Factor

MSRP

10x
8x
7x
Eagle Optics Voyager 10x25 Porro 9.5 18 8.2
9
No
262
No
MC
NA
twist
3.8 4.3 2.0
strap
1/4 toe-in $78.00
Swift Micron CF (A) 10x22 Porro 5.25 8 22
9
Yes
258
Yes
FMC
NA
fold
3.4 4.1 2.0
strap
1/4 toe-in $110.00
Bausche & Lomb Legacy Compact 2001 10x24 Porro 9.3 16 10
8
Yes
272
Yes
FMC
NA
twist
4.0 4.1 2.0
strap
3/4 toe-in $89.99
Olympus PC I 8x25 Porro 9.9 16.5 8.2
9
No
315
No
MC
NA
twist
3.9 4.5 2.0
lace
1/4 toe-in $129.00
Swift Trekker ZWCF (A) 8x26 Porro 12 14 10
8
No
341
No
FMC
NA
fold
3.5 4.5 2.1
strap
1 1/4 toe-in $360.00
Eagle Optics Voyager 8x25 Porro 9.9 18 8.2
8
No
330
No
MC
NA
twist
3.8 4.3 2.0
strap
1/4 toe-in $68.00
Nikon Inc. Travelite V 8x25 Porro 9 14 9.8
8
No
294
No
FMC
NA
fold
4.4 5.0 1.3
strap
5/8 toe-in $156.95
Pentax UCF X 8x25 Porro 11.1 15 6.2
8
No
324
No
MC
NA
snap
4.5 4.9 2.3
strap
1/4 toe-in $109.00
Pentax UCF WR 8x24 Porro 12.8 13 13.1
8
Resist
393
Yes
MC
NA
snap
4.3 5.0 2.5
strap
3/4 toe-in $139.00
Swift Micron CF (A) 8x25 Porro 11 8 8
7
No
331
No
FMC
NA
fold
3.5 4.3 2.0
strap
1/4 toe-in $99.95
Meade Travel View 8x25 Porro 10.5 12 20
6
No
426
No
FC
NA
fold
3.9 5.0 2.3
strap
3/8 toe-in $39.99
Opticron Taiga 8x25 Porro 9.9 18 8.2
6
No
361
No
FMC
NA
twist
4.0 4.5 2.0
strap
1/4 toe-in $99.00
Olympus DPC I 8x21 Porro 6 11 7.2
6
No
336
No
C
NA
fold
3.0 4.1 1.8
strap
1/4 toe-in $59.00
Canon Canon 8x23 Porro 8.8 11 9.8
4
No
338
No
MC
NA
fold
4.0 3.6 2.5
strap
1/4 toe-in $110.00
Bausche & Lomb Custom 7x26 Porro 12 16 8
8
No
363
No
FMC
NA
fold
3.8 4.2 2.0
strap
1 1/2 toe-in $420.00
Nikon Inc. Sprint 7x21 Porro 8.5 12.5 9.8
5
No
351
No
FMC
NA
fold
3.5 4.6 2.3
strap
1/4 toe-in $112.95

Key to the Chart

 

RESOLUTION SCORE: We stabilized each binocular on a tripod and compared how many lines it resolved on an optical resolution chart. For the binoculars resolving the finest lines we assigned a score of 10. Resolving the next finest lines yielded a score of 9, and so on. Note that each magnification class is in its own column so that the reader can easily compare binoculars with others of the same power.

FIELD OF VIEW: Width measured in feet at 1,000 yards.

COATINGS: Ultra-thin coatings are applied to lens surfaces to reduce reflections from the many glass surfaces inside the binoculars and maximize the light coming through to the eye.

C=coated optics: one or more surfaces coated.
FC = fully coated: all air-to-glass surfaces are coated.
MC = multi-coated: one or more surfaces are multi-layer coated.
FMC = fully multi-coated: all air-to-glass surfaces are multi-layer coated.

PHASE CORRECTED: Manufacturers of high quality roof prism optics apply anti-phase shifting coatings to the roof prism to prevent interference problems inherent in roof prism optics. The result is better contrast. Phase corrected coatings are not applicable to Porro prism binoculars (marked "NA").

 

 

WATERPROOF?
Yes=Submersible
Resist=Water resistant; sprinkle but do not submerge
No=Don't get it wet.

EYECUPS:
Fold: Rubber eyecups that bend into the desired position.
Snap: Eyecups that pull out and push in, for faster tradeoffs.
Twist: Eyecups that turn as they extend and retract.

LENGTH: Minimum, measured with eyecups in retracted or folded position.

WIDTH and DEPTH:
For Porro prisms, measured iwht the barrels spread as flat as possible;
For roof prisms, measured with the barrels folded into the most compact position.

DANGLE FACTOR
Head-in: hangs with the eyepieces tilted toward the chest.
Toe-in: hangs with the objective (farther) lenses tilted toward the chest.
Straight: hangs vertically.

MSRP: Manufacturer's Suggested Retail Price. Prices vary widely, and are often substantially lower than those listed here.

 

 

 

 

 

 

 

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