ComparisonTable of GeoVISION™ Cameras    GeoVISION Home

GeoVISION Cameras

Jr and Standard with manual Tilting

 

 

Camera Specifications

JR

M6

JR

M6

Standard SSM1

Standard SSM1

nano

Duel micro

Old Micro

 

Jr Color Camera 

Jr B/W Camera 

Standard Color Camera 

Standard B/W Camera 

nano camera 

Duel micro 

micro camera 

Color or Black and White

Color

B/W

Color

B/W

Color

Color

Color

Housing material

Plastic

CPVC

Plastic

CPVC

Stainless

Steel

Stainless

Steel

Stainless

Steel

Stainless

Steel

Stainless

Steel

Lens window material

Glass

Glass

Sapphire

Sapphire

Sapphire

Sapphire

Sapphire

Maximum camera depth in feet/meters Maximum Cable length and Underwater limit

1000

/300

1000

/300

2000

/600

2000

/600

2000

/600

2000

/600

2000

/600

Weight in ounces and grams

5

141.7

5

141.7

12

340.2

12

340.2

12.8

362.87

 

24

680.29

Lux rating at F2.0

.2

.01

.2

.01

.2

.2

.2

Lens with glass element  (mm)

2.9

2.9

2.45

2.45

2.9

 

2.9

Optional lens available (mm)

3.6

3.6

3.6 or 2.9

3.6 or 2.9

3.6

 

3.6

Resolution Horizontal lines

550

420

550

420

550

550

550

Camera lights on/off circuitry

No

No

Yes

Yes

No

No

No

Camera Dimensions

JR

M6

JR

M6

Standard SSM1

Standard SSM1

nano

Dual micro

Old Micro

Diameter in inches and millimeters at the thickest point

1 ¾/

44.45

1 ¾ /

44.45

1 5/8

41.625

1 5/8

41.625

¾

19.05

1  1/8

1 3/8

34.925

Length in inches and millimeters

3 ½

88.9

3 ½

88.9

2 ¾

69.85

2 ¾

69.85

10

254

24

13

330.2

Minimum borehole diameter in inches for camera passage - This specification assumes some minor irregularities in the pipe or borehole

1 7/8

1 7/8

1 3/4

1 3/4

7/8

1 1/4

1 7/16

Viewing Specifications

JR

M6

JR

M6

Standard SSM1

Standard SSM1

nano

Dual micro

Old Micro

Minimum recommended borehole size in inches for good image

2

2

1 7/8

 1 7/8

1

1 1/4

1 1/2

Maximum borehole diameter in inches when viewing down under good conditions for good image

36 inches

60 inches

36 inches

60 inches

24 inches

36 inches

20/24 *

Maximum borehole diameter in feet when using GeoVISION™ supplemental Super Eight Light under good conditions for good image

15 feet

25 feet

15 feet

25 feet

10 feet

20 feet

15 feet *

Maximum borehole diameter in feet when viewing with motorized side looking mirror and GeoVISION™ the Super 8 Light under good conditions for good image

NA

NA

NA

NA

5 feet

5 feet

5 feet

Maximum viewing distance in feet from camera when using Pan and tilt under good conditions for good image.

6 feet

15 feet

6 feet

10 feet

with 2.45 mm lens

NA

NA

NA

Maximum viewing distance in feet from camera when using both the Pan and Tilt and the Adjustable Super 8 Light under good conditions for good image.

Using the 3.6 mm lens

20 feet

40 feet

20 feet

40 feet

NA

NA

NA

Focal Length

JR

M6

JR

M6

Standard SSM1

Standard SSM1

nano

Duel micro

Micro

 

Jr Color Camera 

Jr B/W Camera 

Standard Color Camera 

Standard B/W Camera 

nano camera 

Duel micro 

micro camera 

Minimum distance in inches to subject for excellent focus

2

2

1.5

1.5

2

2

2

Maximum distance in inches to subject for excellent focus

36

36

60

60

36

36

36

Minimum distance in inches to subject for usable focus

1.5

1.5

1

1

1.5

1.5

1.5

Maximum distance in inches to subject for usable focus

Infinity

Infinity

Infinity

Infinity

Infinity

Infinity

Infinity

Lighting

JR

M6

JR

M6

Standard SSM1

Standard SSM1

nano

Duel micro

Micro

Number of High Brightness LED’s in camera

8

8

8

8

NA

 

NA

Number of High Brightness wide field LED’s in camera

NA

NA

NA

NA

6

 

3 and 9*

Optional ring-light & out-front LED’s

No

No

No

No

No

No

Yes

System compatibility

JR

M6

JR

M6

Standard SSM1

Standard SSM1

nano

Duel micro

Micro

May be used with Deluxe winch

Yes

Yes

Yes

Yes

Yes

Yes

Yes

May be used with the Econo Heavy Duty winch

Yes

Yes

Yes

Yes

Yes

No

No

May Be used with the Econo Light Duty reel. NR = Not Recommended

Yes

Yes

Yes

NR

Yes

NR

Yes

NR

No

No

 

Notes

* The micro camera uses a ring light with nine high brightness LED’s, and either a regular or motorized mirror with three out-front, high-brightness LED’s. Some of these ratings will be affected by which combination of lights is used.

 

Wide angle lens advantages and disadvantages

2.45 mm wide angle lens is very good at close up images. Distant images, 3 feet and greater, appear very small.

2.9 mm wide angle lens is good at close up images. Distant images, 3 feet and greater, appear small.

3.6 mm lens is best at images from 5 inches to infinity. Distant images appear larger with this lens than they do with other lenses. This is a special order lens available with all GeoVISION cameras.

The 3.6 mm lens is recommended for mines, caves, and very large boreholes.

 

Special features of GeoVISION cameras

The GeoVISION Standard stainless steel cameras have camera lights on/off circuitry for use with supplemental lights for improved visibility in poor quality water.

All GeoVISION cameras are interchangeable when used with the GeoVISION™ Deluxe system

All GeoVISION cameras have over voltage and heat protection.

The GeoVISION stainless steel cameras have recessed attachment points allowing the camera to fit in smaller boreholes.

The GeoVISION black and white cameras have a lux rating of .01 at F2.  This ultra low light feature means that even in very low light these cameras will produce a good image where other borehole cameras under the same lighting conditions will not have a usable image

 

Recommendations for large boreholes, mines, caves, tunnels, tanks, pipes, and other voids

Any combination of these items listed below will help get a better image at greater distances

Black and white ultra low light camera

Motorized pan and tilt option for depths to 2000 feet or the manual pan and tilt that is standard with all JR and Standard cameras for use at depths less than 200 feet.  The 200 foot depth is a mater of personal choice. The manual system becomes more difficult to operate at greater depths.

Supplemental lighting

 

Factors that determine the quality of an image from a borehole camera

  1. Water clarity
  2. Distance to subject
  3. Amount of light and lux rating of camera.  The GeoVISION black and white cameras are all ultra low light and are the best borehole cameras for viewing distant objects.
  4. Location of light in relation to camera and subject. For example suspended particles may reflect light from on camera lights directly into the camera lens.  Supplemental lights off camera reduce this reflection and provide texture to the subject so that it can be comprehended better.
  5. Stability and location of camera in borehole. This is best achieved by the use of adjustable centralizers.
  6. Angle of view between camera and subject.  Tilting camera provide by far the most options by allowing the operator to view the subject at different angles
  7. Type of lens - A wide angle lens such as the 2.45 allows a better view of the borehole when viewing down and provides a better view of close subjects. The 3.6 lens provides a larger image of distant objects but is not as good when viewing close objects.

 

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