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SLR Lens Ports & Gears |
For a general discussion of how to choose and use ports, see the
Interchangeable Lens Ports article.
Considerations for Choosing a Lens Port Your lens may already be listed in the SLR Port Charts on the Ikelite website. Refer to that information before continuing here.
Size restrictions: Maximum lens diameter is 84mm.
If focus or zoom clamp is required, maximum barrel diameter is 71mm with the standard Ikelite clamp set, 76mm with the special clamp set 5509.28 (supplied with DSLR housings).
Mechanical restrictions: Lens couplings use a rotary action, therefore, push-pull zoom controls cannot be used underwater. Manual focus zoom lenses are not recommended.
Optical Requirements: In general, wide-angle and zoom lenses should be used with a dome port. A lens which has a focal length of 28mm or longer (35mm equiv.) ie. a Standard, Macro or Portrait lens, can be used with a flat port.
Infinity correction: When a Zoom lens is used with a 6" dome port, a +4 Diopter
close-up lens may be required to counteract the de-magnifying effect of the port.
Vignetting: With long-throw lenses, there is always a danger of vignetting (dark corners) when the front of the lens is furthest back in the port. This applies particularly to 1:1 Macro lenses. If the possibility of vignetting at infinity is not acceptable, use a dome port.
Dome size: Dome ports are available with either 3" or 4" optical radius. In keeping with industry convention, these are known as 6" and 8" domes.
:-)
Advantages of a large dome: improved minimum focusing distance (diopter lens is less likely to be needed); less difference between in-air and underwater focusing distances (better for half-in half-out shots), and reduced chromatic aberration.
:-(
Disadvantages of a large dome: increased buoyancy, the ever present need to protect a large optical surface from damage, and increased cost.
 Lens Physical Length: Rotate the focus and zoom controls until the lens is at its maximum length. Measure the length of the lens, including any filters or diopters you intend to use, and choose a port which can accommodate it. |
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Control Linkages: The Ikelite housing has provision for
one rotary zoom or focus control. The housing is supplied with a manual focus/zoom coupling (gear sleeve and lens-barrel clamp) which works with most lenses. Since there is only one mechanical coupling, it can be used for focus
or zoom, but not both; for which reason, manual focus zooms are not recommended. Some longer lenses have a zoom or focus barrel which lies beyond the reach of the housing mechanism. In this case, a flat port with focus/zoom control is required. Since the mechanical coupling is rotary, push-pull type zoom lenses cannot be zoomed when inside the housing.
When testing a lens with a port for the first time, lie the housing on its back and put a few layers of tissue paper over the front of the lens before winding it close to the port window. Check that clearance is still sufficient with the port pressed firmly into the housing (as it will be by water-pressure while diving). Unsuitable ports can be returned for refund or exchange, provided that they are complete with original packaging and documentation, and
undamaged.
? To identify an unmarked port: Rest the port face down on a table top (lay a lens cleaning cloth on the table first if the port has no guard). Place a straight-edge (e.g., a ruler) across the back of the port and measure the vertical distance to the table. The approximate overall lengths of the various ikelite ports are given in the lists below.
6" dome ports
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 High precision injection moulded optical dome.
 Supplied with Protective neoprene cover (except 5503.15) and O-ring.
Zoom lenses may require +4 Diopter close-up lens (not included).
Optical data: Port material: Acrylic, Refractive index: nD=1.492. Inside radius: 3", 76.2mm. Nominal thickness: 0.218", 5.537mm. |
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6″ SLR Dome port, superwide (110 - 170°)
Max length of lens, fully extended, inc filters: 63mm. Cannot be used with port shade
Overall length: 63.5mm. ikelite #5503.15 |
£169.99
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6″ SLR Dome port
Minimum focal length of lens: 17mm. Max length of lens, fully extended, inc filters: 76mm
Overall length: 78.5mm. ikelite #5503 |
£169.99
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6″ SLR Dome port
for Nikon 18mm and 20mm D lenses
ikelite #5503.2 |
£169.99
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6″ SLR Dome port
for Olympus 7-14mm
ikelite #5503.3 |
£220.00
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Special dome port shade for #5503
To use the Nikon AF Nikkor 20mm f/2.8D lens with DP #5503
ikelite #5504.2 |
£17.99
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Extended 6″ SLR Dome port
Length of lens, fully extended, inc. filters: 76 - 101mm
Overall length: 104mm. ikelite #5503.5 |
£169.99
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6″ SLR Dome port
For Tokina 12-24mm & Sigma 10-20mm 1:4-5.6 EX DC HSM (for Sigma: No Zoom control provided)
ikelite #5503.51 |
£169.99
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Extended 6″ SLR Dome port
Length of lens, fully extended, inc. filters: 89 - 114mm
Overall length: 117mm. ikelite #5503.55 |
£169.99
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Extended 6″ SLR Dome port
Length of lens, fully extended, inc. filters: 101 - 127mm
Overall length: 130mm. ikelite #5503.8 |
£169.99
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Extended 6″ SLR Dome port
for Nikon AF 28-105mm f/3.5-4.5D Zoom Nikkor Lens
Overall length: 130mm. ikelite #5503.81 |
£169.99
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Extended 6″ SLR Dome port
for Nikon AF-S DX NIKKOR 18-105mm f/3.5-5.6G ED VR Lens
ikelite #5503.82 |
£169.99
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Extended 6″ SLR Dome port
Length of lens, fully extended, inc. filters: 127 - 152mm
Overall length: 155mm. ikelite #5503.85 |
£169.99
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Extended 6″ SLR Dome port with Focus control
For Canon EF-S 17-85mm f4-5.6 IS USM Lens
Overall length: 127mm. ikelite #5503.9 |
£220.00
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Zen DP-100 4" dome port
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4″ optical glass dome port, for ikelite with Tokina 10-17mm fisheye
50mm optical radius
Zen DP-100-IT |
£749.99
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Modular ports; 8" dome and flat.
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| 5510.35 + 5510.75 |
5510.45 |
5510.45 + 5510.11 |
Modular 4" radius dome port system with choice of extension. Optical acrylic.
Suitable for Nikon 12-24mm, Canon 10-22mm, and all lenses which work with the 5503.80 extended 3" port.
Reduces the difference between in-air and in-water focusing distances for half-in half-out photographs.
Improves minimum focusing distance by placing virtual image further from the camera. Reduces chromatic aberration due to the air-water boundary.
Complete assembly requires port body (fits on housing, several lengths available) and port (dome or flat). Port extension (if required) fits between port body and port.
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Modular port, 8″ dome assembly, with shade & cover
ikelite #5510.45 |
£349.99
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Spare dome shade for 8″ dome port (5510.45)
ikelite #5510.05 |
£89.99
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Modular port body, (short) for super-wide lenses. ikelite #5510.11
Max length of lens /mm, fully extended, inc filters: 66 (FP), 70 (DP)
Includes #5510.09 locking device for either 2-lock or 4-lock housings. |
£109.99
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Modular port body
Max length of lens /mm, fully extended, inc filters: 86 (FP), 89 (DP)
ikelite #5510.16 |
£109.99
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Modular port body
Max length of lens /mm, fully extended, inc filters: 102 (FP), 105 (DP)
ikelite #5510.22 |
£130.00
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Modular port body
Max length of lens /mm, fully extended, inc filters: 105 (FP), 108 (DP)
ikelite #5510.24 |
£130.00
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Modular port body
For 8" port, to fit Olympus Zuiko 7-14mm
ikelite #5510.25 |
£149.99
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Modular port body, for 8″ DP + Nikkor 18-135mm, etc.
Max length of lens /mm, fully extended, inc filters: 127 (FP), 130 (DP)
ikelite #5510.28 |
£149.99
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Modular flat port
Requires port body to use with housing
ikelite #5510.35 |
£169.99
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Modular port extension, 1.9cm
fits between port and port body
ikelite #5510.50 |
£89.99
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Modular port extension, 3.1cm
fits between port and port body
ikelite #5510.54 |
£109.99
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Modular port extension, 4.4cm
fits between port and port body
ikelite #5510.58 |
£109.99
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Modular port extension, 4.4cm with focus control
for Nikon 105mm VR macro + 5510.16 or 5510.22, Canon 100mm USM macro + 5510.16, etc.
ikelite #5510.75 |
£149.99
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Standard Flat Ports
Supplied with Neoprene cover and O-ring.
Ports may vignette at infinity with some 1:1 macro lenses.
Lens focal length should be 35mm or longer (35mm equivalent) for best optical quality. |
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SLR Flat port
Max length of lens, fully extended, inc. filters: 63mm
Overall length: 60mm. ikelite #5501 |
£109.99
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SLR Flat port
Max length of lens, fully extended, inc. filters: 63-89mm
Overall length: 84.7mm. ikelite #5502 |
£109.99
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SLR Flat port
Max length of lens, fully extended, inc. filters: 79-104mm
Overall length: 100.4mm. ikelite #5502.41 |
£130.00
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SLR Flat port
Max length of lens, fully extended, inc. filters: 89-114mm
Overall length: 112mm. ikelite #5505 |
£130.00
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SLR Flat port
Max length of lens, fully extended, inc. filters: 104-130mm
Overall length: 127mm. ikelite #5505.45 |
£130.00
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SLR Flat port
For Nikon 105mm macro, micro Nikkor VR lens
Overall length: 127mm. ikelite #5505.46 |
£169.99
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SLR Flat port
Max length of lens, fully extended, inc. filters: 114-140mm
Overall length: 135.2mm. ikelite #5505.5 |
£130.00
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SLR Flat port
Max length of lens, fully extended, inc. filters: 130-155mm
Overall length: 152mm. ikelite #5505.58 |
£130.00
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Standard Flat ports with Focus/Zoom control
For long lenses, where the focus or zoom collar lies beyond the range of the housing focus sleeve. Telephoto lenses of more than 135mm focal length are not recommended. Supplied with Neoprene cover, O-ring and special gear sleeve. Lens barrel clamp included except with 5508.05 (not required). |
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SLR Flat port with Focus/Zoom control
Length of lens, fully extended, inc. filters: 89-114mm
Overall length: 109mm. ikelite #5506 |
£169.99
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SLR Flat port with Focus/Zoom control
Length of lens, fully extended, inc. filters: 144-140mm
Overall length:135 mm. ikelite #5506.5 |
£169.99
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SLR Flat port with Focus/Zoom control
Length of lens, fully extended, inc. filters: 140-165mm
Overall length: 160mm. ikelite #5507 |
£169.99
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SLR Flat port with Focus/Zoom control
Length of lens, fully extended, inc. filters: 165-190mm
Overall length: 185mm. ikelite #5508 |
£169.99
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SLR Flat port with Focus/Zoom control
For Nikon 105mm Macro. Supplied with gear sleeve for AF-MF switching
Overall length: 140mm. ikelite #5508.05 |
£169.99
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SLR Flat port with Focus/Zoom control
For Canon EF 100mm F/2.8 Macro USM
Overall length:119 mm. ikelite #5508.45 |
£169.99
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SLR Flat port with Focus/Zoom control
For Canon EF100mm F/2.8L Macro IS USM
ikelite #5508.46 |
£169.99
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SLR Flat port with Focus/Zoom control
For Sigma 70mm Macro
ikelite #5508.7 |
£169.99
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SLR Zoom Sleeves
Zoom sleeve for Nikon 17-35mm
ikelite #5509.17 |
£17.99
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Zoom sleeve for Nikon 18-105mm
ikelite #5509.18 |
£10.00
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Zoom sleeve for Nikon 12-24mm
ikelite #5509.28 |
£17.99
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Zoom sleeve for Olympus Zukio 12-60mm
ikelite #5509.60 |
£10.00
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Zoom clamp set for Sigma 8-16mm
ikelite #5509.68 |
£17.99
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SLR Port Spares
Spare rear O-ring for SLR port
Fits between port and housing body
ikelite #0105 |
£10.99
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Spare intermediate O-ring for modular port
ikelite #0132.41 |
£13.00
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Gear sleeve for focus or zoom, clear
ikelite #0073 |
£10.99
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Zoom clamp (diameter 7.1cm / 2.80″)
ikelite #9059.8 |
£13.99
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rotation lock feature for Superwide port Body
ikelite #5510.09 |
£10.00
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Port covers
Port cover for 3″ lens ports
ikelite #0200 |
£4.99
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Port cover 2″
ikelite #0200.02 |
£10.99
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Port cover 1.75″
ikelite #0200.06 |
£5.99
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Vinyl port cover 4″
fits modular flat port, etc.
ikelite #0200.08 |
£13.99
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Neoprene cover for domes except 5503.15
ikelite #0200.1 |
£22.99
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soft cover for flat ports
ikelite #0200.2 |
£13.99
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Neoprene cover for 5503.15
ikelite #0200.3 |
£13.99
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Neoprene cover small video
ikelite #0200.5 |
£13.99
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Neoprene cover 8″ dome port
ikelite #0200.8 |
£22.99
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Neoprene cover 8″ dome port with shade
ikelite #0200.81 |
£29.99
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E&OE
