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Clamps adapters

Clamp adapters hold a lens or other cylindrical part by gripping its outer surface.

Browse by clamping diameter

Choose the outside diameter of the part to be held. Check the individual product for its clamping range and the connection on the other side.

10-19mm clamps

20-29mm clamps

30-39mm clamps

40-49mm clamps

50-59mm clamps

60-69mm clamps

70-79mm clamps

80-89mm clamps

90-99mm clamps

100-199mm clamps

Astronomy Clamps

For LOMO Square Fronts

Browse size ranges

Use the Front Side and Rear Side filters in the product listing to narrow down both connections.

View as Grid List

Items 1-12 of 407

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Connection reference and compatibility

Browse the reference — 104 entries

14mm clamp

Clamp for a nominal 14mm cylindrical mating diameter.

16mm clamp

Clamp for a nominal 16mm cylindrical mating diameter.

18mm clamp

Clamp for a nominal 18mm cylindrical mating diameter.

21mm clamp

Clamp for a nominal 21mm cylindrical mating diameter.

21.8mm clamp

Clamp for a nominal 21.8mm cylindrical mating diameter.

23.2mm clamp

Clamp for a nominal 23.2mm cylindrical mating diameter.

24mm clamp

Clamp for a nominal 24mm cylindrical mating diameter.

24.6mm clamp

Clamp for a nominal 24.6mm cylindrical mating diameter.

25mm clamp

Clamp for a nominal 25mm cylindrical mating diameter.

25.5mm clamp

Clamp for a nominal 25.5mm cylindrical mating diameter.

28mm clamp

Clamp for a nominal 28mm cylindrical mating diameter.

30mm clamp

Clamp for a nominal 30mm cylindrical mating diameter.

30.5mm clamp

Clamp for a nominal 30.5mm cylindrical mating diameter.

31mm clamp

Clamp for a nominal 31mm cylindrical mating diameter.

33mm clamp

Clamp for a nominal 33mm cylindrical mating diameter.

34mm clamp

Clamp for a nominal 34mm cylindrical mating diameter.

35mm clamp

Clamp for a nominal 35mm cylindrical mating diameter.

35.5mm clamp

Clamp for a nominal 35.5mm cylindrical mating diameter.

36mm clamp

Clamp for a nominal 36mm cylindrical mating diameter.

37mm clamp

Clamp for a nominal 37mm cylindrical mating diameter.

38mm clamp

Clamp for a nominal 38mm cylindrical mating diameter.

39mm clamp

Clamp for a nominal 39mm cylindrical mating diameter.

40mm clamp

Clamp for a nominal 40mm cylindrical mating diameter.

40.5mm clamp

Clamp for a nominal 40.5mm cylindrical mating diameter.

41.5mm clamp

Clamp for a nominal 41.5mm cylindrical mating diameter.

42mm clamp

Clamp for a nominal 42mm cylindrical mating diameter.

42.5mm clamp

Clamp for a nominal 42.5mm cylindrical mating diameter.

43mm clamp

Clamp for a nominal 43mm cylindrical mating diameter.

43.5mm clamp

Clamp for a nominal 43.5mm cylindrical mating diameter.

44mm clamp

Clamp for a nominal 44mm cylindrical mating diameter.

45mm clamp

Clamp for a nominal 45mm cylindrical mating diameter.

46mm clamp

Clamp for a nominal 46mm cylindrical mating diameter.

47mm clamp

Clamp for a nominal 47mm cylindrical mating diameter.

48mm clamp

Clamp for a nominal 48mm cylindrical mating diameter.

48.5mm clamp

Clamp for a nominal 48.5mm cylindrical mating diameter.

49mm clamp

Clamp for a nominal 49mm cylindrical mating diameter.

49.5mm clamp

Clamp for a nominal 49.5mm cylindrical mating diameter.

50mm clamp

Clamp for a nominal 50mm cylindrical mating diameter.

51mm clamp

Clamp for a nominal 51mm cylindrical mating diameter.

52mm clamp

Clamp for a nominal 52mm cylindrical mating diameter.

52.5mm clamp

Clamp for a nominal 52.5mm cylindrical mating diameter.

53mm clamp

Clamp for a nominal 53mm cylindrical mating diameter.

53.3mm clamp

Clamp for a nominal 53.3mm cylindrical mating diameter.

54mm clamp

Clamp for a nominal 54mm cylindrical mating diameter.

55mm clamp

Clamp for a nominal 55mm cylindrical mating diameter.

56mm clamp

Clamp for a nominal 56mm cylindrical mating diameter.

57mm clamp

Clamp for a nominal 57mm cylindrical mating diameter.

57.5mm clamp

Clamp for a nominal 57.5mm cylindrical mating diameter.

58mm clamp

Clamp for a nominal 58mm cylindrical mating diameter.

60mm clamp

Clamp for a nominal 60mm cylindrical mating diameter.

61mm clamp

Clamp for a nominal 61mm cylindrical mating diameter.

62mm clamp

Clamp for a nominal 62mm cylindrical mating diameter.

62.5mm clamp

Clamp for a nominal 62.5mm cylindrical mating diameter.

63mm clamp

Clamp for a nominal 63mm cylindrical mating diameter.

64mm clamp

Clamp for a nominal 64mm cylindrical mating diameter.

65mm clamp

Clamp for a nominal 65mm cylindrical mating diameter.

66mm clamp

Clamp for a nominal 66mm cylindrical mating diameter.

67mm clamp

Clamp for a nominal 67mm cylindrical mating diameter.

69mm clamp

Clamp for a nominal 69mm cylindrical mating diameter.

70mm clamp

Clamp for a nominal 70mm cylindrical mating diameter.

71mm clamp

Clamp for a nominal 71mm cylindrical mating diameter.

72mm clamp

Clamp for a nominal 72mm cylindrical mating diameter.

73mm clamp

Clamp for a nominal 73mm cylindrical mating diameter.

74mm clamp

Clamp for a nominal 74mm cylindrical mating diameter.

75mm clamp

Clamp for a nominal 75mm cylindrical mating diameter.

76mm clamp

Clamp for a nominal 76mm cylindrical mating diameter.

77mm clamp

Clamp for a nominal 77mm cylindrical mating diameter.

78mm clamp

Clamp for a nominal 78mm cylindrical mating diameter.

80mm clamp

Clamp for a nominal 80mm cylindrical mating diameter.

82mm clamp

Clamp for a nominal 82mm cylindrical mating diameter.

82.5mm clamp

Clamp for a nominal 82.5mm cylindrical mating diameter.

83mm clamp

Clamp for a nominal 83mm cylindrical mating diameter.

83.5mm clamp

Clamp for a nominal 83.5mm cylindrical mating diameter.

84mm clamp

Clamp for a nominal 84mm cylindrical mating diameter.

85mm clamp

Clamp for a nominal 85mm cylindrical mating diameter.

86.5mm clamp

Clamp for a nominal 86.5mm cylindrical mating diameter.

88.5mm clamp

Clamp for a nominal 88.5mm cylindrical mating diameter.

89mm clamp

Clamp for a nominal 89mm cylindrical mating diameter.

90mm clamp

Clamp for a nominal 90mm cylindrical mating diameter.

91mm clamp

Clamp for a nominal 91mm cylindrical mating diameter.

92mm clamp

Clamp for a nominal 92mm cylindrical mating diameter.

95mm clamp

Clamp for a nominal 95mm cylindrical mating diameter.

97mm clamp

Clamp for a nominal 97mm cylindrical mating diameter.

99mm clamp

Clamp for a nominal 99mm cylindrical mating diameter.

100mm clamp

Clamp for a nominal 100mm cylindrical mating diameter.

101.7mm clamp

Clamp for a nominal 101.7mm cylindrical mating diameter.

103mm clamp

Clamp for a nominal 103mm cylindrical mating diameter.

104mm clamp

Clamp for a nominal 104mm cylindrical mating diameter.

107mm clamp

Clamp for a nominal 107mm cylindrical mating diameter.

108.5mm clamp

Clamp for a nominal 108.5mm cylindrical mating diameter.

110mm clamp

Clamp for a nominal 110mm cylindrical mating diameter.

114mm clamp

Clamp for a nominal 114mm cylindrical mating diameter.

115mm clamp

Clamp for a nominal 115mm cylindrical mating diameter.

121mm clamp

Clamp for a nominal 121mm cylindrical mating diameter.

128mm clamp

Clamp for a nominal 128mm cylindrical mating diameter.

130mm clamp

Clamp for a nominal 130mm cylindrical mating diameter.

132mm clamp

Clamp for a nominal 132mm cylindrical mating diameter.

134.4mm clamp

Clamp for a nominal 134.4mm cylindrical mating diameter.

138mm clamp

Clamp for a nominal 138mm cylindrical mating diameter.

145mm clamp

Clamp for a nominal 145mm cylindrical mating diameter.

173mm clamp

Clamp for a nominal 173mm cylindrical mating diameter.

31.75mm clamp

Clamp for a nominal 31.75mm cylindrical mating diameter.

50.8mm clamp

Clamp for a nominal 50.8mm cylindrical mating diameter.

Clamps: selection guide

Choosing a clamp

Measure the outside diameter at the point where the clamp will sit. Check that there is enough straight surface for the clamp and that screws will not press on moving parts.

Tightening and support

Tighten the screws only enough to hold the lens securely. Overtightening can damage the barrel, jam its mechanism or damage optical elements. A friction connection can slip; support heavy lenses and check the grip before use.

Browse all adapter types · Request a custom adapter

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Shopping Options
Adapter Front Side
  1. 1.25" telescope port 1 item
  2. 2″ telescope port 3items
  3. 14mm clamp 1 item
  4. 16mm clamp 1 item
  5. 18mm clamp 2items
  6. 21mm clamp 1 item
  7. 21.8mm clamp 1 item
  8. 23.2mm 1 item
  9. 24.6mm clamp 2items
  10. 25mm clamp 2items
  11. 25.5mm clamp 3items
  12. 28mm clamp 1 item
  13. 30mm clamp 4items
  14. 30.5mm clamp 1 item
  15. 33mm bore 1 item
  16. 33mm clamp 1 item
  17. 33.2mm clamp 1 item
  18. 34mm clamp 4items
  19. 35mm clamp 1 item
  20. 36mm clamp 1 item
  21. 37mm clamp 4items
  22. 38mm clamp 13items
  23. 39mm clamp 12items
  24. 40mm clamp 8items
  25. 41.5mm clamp 1 item
  26. 42.5mm clamp 4items
  27. 42mm clamp 4items
  28. 43mm clamp 12items
  29. 44mm clamp 8items
  30. 44.5mm clamp 1 item
  31. 45mm clamp 4items
  32. 46mm clamp 12items
  33. 47mm clamp 5items
  34. 48mm clamp 2items
  35. 49mm clamp 3items
  36. 49.5mm clamp 2items
  37. 50mm clamp 4items
  38. 51mm clamp 5items
  39. 52.5mm clamp 13items
  40. 52mm clamp 18items
  41. 53mm clamp 1 item
  42. 53.3mm clamp 1 item
  43. 54mm clamp 14items
  44. 55mm clamp 1 item
  45. 56mm clamp 3items
  46. 57mm clamp 2items
  47. 57.5mm clamp 9items
  48. 58mm clamp 3items
  49. 60mm clamp 2items
  50. 61mm clamp 1 item
  51. 61.5mm clamp 1 item
  52. 62.5mm clamp 5items
  53. 63mm clamp 1 item
  54. 64mm clamp 5items
  55. 65mm clamp 6items
  56. 66mm clamp 3items
  57. 67mm clamp 2items
  58. 70mm clamp 1 item
  59. 71mm clamp 13items
  60. 72mm clamp 5items
  61. 73mm clamp 1 item
  62. 74mm clamp 1 item
  63. 75mm clamp 2items
  64. 76mm clamp 1 item
  65. 76.5mm clamp 1 item
  66. 78mm clamp 2items
  67. 80mm clamp 1 item
  68. 80mm diameter 1 item
  69. 82.5mm clamp 3items
  70. 84mm clamp 1 item
  71. 85mm clamp 1 item
  72. 88.5mm clamp 2items
  73. 95mm clamp 1 item
  74. 100mm clamp 1 item
  75. 104mm clamp 2items
  76. 114mm clamp 2items
  77. 114mm diameter 2items
  78. 115mm clamp 1 item
  79. 134mm diameter 5items
  80. 138mm clamp 1 item
  81. 143mm diameter 2items
  82. 145mm clamp 1 item
  83. 165mm diameter 1 item
  84. 173mm clamp 1 item
  85. Dovetail 46mm 1 item
  86. Dovetail 49mm 1 item
  87. Dovetail 51mm 1 item
  88. M37x0.75 1 item
  89. M40x1 1 item
  90. M42x0.75 (T2) 1 item
  91. M42x1 2items
  92. M46x0.75 2items
  93. M48x0.75 2items
  94. M49x0.75 1 item
  95. M52x0.75 13items
  96. M55x0.75 1 item
  97. M58x0.75 3items
  98. M62x0.75 2items
  99. M64x0.5 1 item
  100. M65x1 1 item
  101. M67x0.75 4items
  102. M69x0.75 1 item
  103. M72x0.75 3items
  104. M75x0.75 9items
  105. M77x0.75 28items
  106. M82x0.75 5items
  107. M86x0.75 2items
  108. M86x1 11items
  109. M93 1 item
  110. M93x0.75 1 item
  111. M95x0.75 10items
  112. M95x1 6items
  113. M105x0.75 2items
  114. M105x1 1 item
  115. M112x1 1 item
  116. M127x0.75 2items
  117. Nikon Z 1 item
Adapter Rear Side
  1. 1.25″ eyepiece holder 4items
  2. 24mm clamp 1 item
  3. 25mm clamp 1 item
  4. 30mm clamp 1 item
  5. 31mm clamp 1 item
  6. 33mm clamp 1 item
  7. 34mm clamp 1 item
  8. 35mm clamp 2items
  9. 35.5mm clamp 1 item
  10. 37mm clamp 3items
  11. 38mm clamp 2items
  12. 38mm outer diameter 1 item
  13. 40mm clamp 2items
  14. 40.5mm clamp 2items
  15. 41.5mm clamp 1 item
  16. 42mm clamp 1 item
  17. 47mm clamp 1 item
  18. 47.3mm clamp 1 item
  19. 48mm clamp 1 item
  20. 48.5mm clamp 1 item
  21. 49mm clamp 1 item
  22. 51mm clamp 4items
  23. 52mm clamp 3items
  24. 54mm clamp 1 item
  25. 56mm clamp 1 item
  26. 57mm clamp 2items
  27. 58mm clamp 6items
  28. 60mm clamp 8items
  29. 61.5mm clamp 1 item
  30. 62mm clamp 2items
  31. 62.5mm clamp 2items
  32. 64mm clamp 1 item
  33. 65mm clamp 3items
  34. 66mm clamp 3items
  35. 67mm clamp 3items
  36. 69mm clamp 1 item
  37. 70mm clamp 8items
  38. 70.5mm clamp 1 item
  39. 71mm clamp 4items
  40. 72mm clamp 2items
  41. 73mm clamp 2items
  42. 75mm clamp 2items
  43. 76mm clamp 1 item
  44. 77mm clamp 1 item
  45. 80mm clamp 4items
  46. 82mm clamp 2items
  47. 83mm clamp 2items
  48. 83.5mm clamp 2items
  49. 85mm clamp 3items
  50. 86.5mm clamp 1 item
  51. 89mm clamp 2items
  52. 90mm clamp 1 item
  53. 91mm clamp 1 item
  54. 92mm clamp 3items
  55. 95mm clamp 2items
  56. 97mm clamp 2items
  57. 99mm clamp 3items
  58. 101.7mm clamp 1 item
  59. 103mm clamp 1 item
  60. 107mm clamp 3items
  61. 108.5mm clamp 1 item
  62. 110mm clamp 1 item
  63. 114mm clamp 1 item
  64. 115mm clamp 1 item
  65. 121mm clamp 1 item
  66. 128mm clamp 1 item
  67. 130mm clamp 1 item
  68. 132mm clamp 1 item
  69. 134.4mm clamp 1 item
  70. Arri PL mount 2items
  71. C-mount 1 item
  72. Canon EF 5items
  73. Clamp for LOMO SFA 35mm 4items
  74. Clamp for LOMO SFA 50/75/80mm 1 item
  75. Dovetail 39.7mm 1 item
  76. Dovetail 49mm 2items
  77. Fujifilm GFX mount 1 item
  78. Graflex Board 1 item
  79. Leica M-mount 1 item
  80. M24x0.5 1 item
  81. M26x0.7 1 item
  82. M28x0.75 1 item
  83. M28.5x0.6 3items
  84. M29.5x0.5 1 item
  85. M30x0.75 1 item
  86. M30.3x0.8 1 item
  87. M32x0.75 1 item
  88. M35.5x0.5 1 item
  89. M37x0.75 1 item
  90. M39x0.5 1 item
  91. M39x0.75 1 item
  92. M39x1 3items
  93. M40.5x0.5 1 item
  94. M42x0.75 (T2) 4items
  95. M42x1 39items
  96. M43x0.75 3items
  97. M45x0.7 1 item
  98. M45x0.75 1 item
  99. M49x0.75 7items
  100. M52x0.75 19items
  101. M52x1 13items
  102. M53x1 3items
  103. M54x1 1 item
  104. M55x0.75 9items
  105. M55x1 1 item
  106. M57x1 1 item
  107. M58x0.75 15items
  108. M58x1 5items
  109. M60x1 1 item
  110. M62x0.75 7items
  111. M65x1 42items
  112. M67x0.75 6items
  113. M72x0.75 7items
  114. M72x1 2items
  115. M75x0.75 1 item
  116. M77x0.75 12items
  117. M82x1 3items
  118. M86x1 1 item
  119. M94x1 1 item
  120. M115x0.75 2items
  121. Mamiya 645 1 item
  122. Nikon F 1 item
  123. Nikon Z 1 item
  124. Pentax 67 3items
  125. Pentacon Six 1 item
  126. RMS 3items
  127. Rollei SL66 3items
  128. SCT (2″-24tpi) 1 item
  129. SM1 thread 1 item
  130. SM2 thread 8items
  131. SM3 thread 1 item
  132. Other front clamp 4items
Source
  1. Belarus 407items
  2. USA 67items
  3. Austria 44items
  4. Poland 4items