Project Description

ewa-marine U-A100

Underwater housing for compact, consumer SLR cameras with 77 or 82mm filter thread lenses

The U-A100 SLR underwater housing makes it easy to operate the camera as its various components and buttons can be operated through the PVC.

The U-A100 is designed to fit almost all common SLR cameras on the market today, irrespective of the manufacturer or model. With this housing, you can take the camera safely up to a depth of 20 m / 60 ft.

U-A100 is shipped with the new ewa-marine safety-wrist-strap. Simply slip your hand through the loop at the bottom and, if the camera accidentally falls out of your hand, the loop automatically locks and secures the underwater case to your wrist. And yet it is easy and quick to open, when required, with the integrated buckle.

If the optional BF1 lead weight is inserted into the housing, underneath the camera, it becomes even easier to reach the maximum depth. Experienced photographers have confirmed, that the auto focus and flash both continue to function perfectly. As you descend, the air is pressed into the camera. Due to this, the pressure inside the housing will remain the same as the surrounding water pressure; ewa-marine assures implosions are impossible. Due to this, we have to start the dive with a suitable amount of air inside the housing. The foam pads supplied with the housing are part of this air “reservoir” and additional air should also be blown into the housing, via the valve at the rear, to ensure that the maximum potential volume is being utilized.

Designed specifically for consumer style digital dSLR, large mirrorless system-camera as well as the “old style” analog 35mm SLR cameras, the ewa-marine U-A100 underwater housing is manufactured from double laminated PVC and has an integrated, optically neutral flat glass as a front port. With this housing you will receive an 82mm filter adapter and a RA77-82 step-up ring. By means of thess adapters the camera is then docked into the housings front port (which is bigger on this housing then on the standard U-A), ensuring that the lens remains parallel and centered behind the front of the lens. Just as if it were a clear, neutral optical filter.

As many cameras in this category have a built in, pop-up flash we have added a “roof” to accommodate it in the housing. To fix the right hand near the shutter release, the housing has an adjustable wrist strap and a “Finger” to position the index finger right on the trigger.

The housing comes with a foam padding that fits underneath the camera, inside the housing. This sponge has to be removed if you want to use your camera with a battery grip, or to make space for the tripod connector that is available as an optional extra. (Please keep in mind that, as a result, cameras like the Nikon D4 or Canon 1DX, that basically include a fixed “battery grip” as part of their design, can not be used inside the housing that has been fitted with a tripod connector.)

It has a pair of non-corrosive and seawater resistant clamping rails which fit together for perfect sealing. They tighten by means of three screw knobs. There is also the practical, adjustable carry strap on the clamping rail.


  • Overall Maximum Width of Camera: 170 mm max (6 2/3 inches)
  • Length of Camera PLUS Lens: 170 mm max. (6 2/3 inches)
  • Housing height: 135 mm (5 1/3 inches)
  • max Filter Diameter: 82 mm
  • Weight: 380g (13,5 lbs)


EOS 10D 20D 20Da 30D 40D 50D 60D 60 Da 70D 77D 80D
EOS 100D 200D 300D 350D 400D 450D 500D 550D 600D 650D 700D 750D 760D 800D 850D
EOS 1000D 1100D 1200D 1300D 2000D 4000D
Powershot G7X, G7X Mark II
Digital Rebel XT XTi XSi T1i T2i T3i T4i T5i T6i T6s T7 T7i SL1 SL2 XS T3T5 T100
Kiss N X X2 X3 X4 X5 X6i X7i X8i F X50 X70
analog EOS: 1N 3 5 10 30 50 100 300 500 600 620 630 650 700 750 850 888 3000 5000 IX RT Elan

D3000 D3100 D3200 D3300 D3400
D5000 D5100 D5200 D5300 D5500 D5600
D7100 D7200 D7500
D40 D40x D50 D60 D610
D70 D70s D80 D90
F100 F401 F401S F401X F50 F501 F55 F60 F601 F65 F70 F75 F80 F801 F801S
N2020 N4004 N4004S N401X N50 N55 N60 N601 N65 N70 N75 N80 N801 N801S
Nikon DF
Pronea 6i 600i S

S100FS S200EXR S205EXR S4000 S8100 S9500 S9600
X-T1 X-T2 X-T3

EasyShare Z710

Konica / Minolta
Alpha Series
Dynax 5D
Dynax Series
Maxxum Series

E-300 E-330 E-400 E-410 E-420 E-450 E-500 E-510 E-520 E-620
OM-D E-M5 E-M5 Mark II
OM-D E-M1 OM-D E-M10
OM-101 OM-707 OM-77 OM-88

Panasonic Lumix
DMC-G1 G2 G3 G5 G6 G7 G10 G70 G81 G91

*istDL *istDL2 *istDs
K-3 K-3II K-m K-r K-x KP K-S1
K-5 K-30 K-70
K100D K10D K110D K2000 K2000 K200D K20D K500

GX-1L 1S 20
NX1 NX5 NX10 NX11 NX20

SA-7 SA-9 SD15
FP (depending on the lens, possibly also D-B housing)

A7 (all versions)
α7 α7R α7S α7RII
Alpha 560
Alpha A100 A200 A230 A290 A300 A330 A350 A380 A390
SLT-A33 A35 A37 A55 A57 A58 A65 A68 A77 A99