Use this Sea & Sea Zoom Gear for Sigma 17-70mm Lensto control manual zooming with your Sigma 17-70mm f/2.8-4 DC MACRO OS HSM lens in a compatible lens port, which mounts onto an MDX underwater housing for a Canon or Nikon camera. It is only compatible with the redesigned version of the lens, which was introduced in 2013 and has a "C" label on the barrel. For compatibility, see Canon MDX System Chart and Nikon MDX System Chart. Manual focus cannot be used when this zoom gear is in place. The gear mounts onto the zoom ring of the lens and is controlled via the focus/zoom dial/knob on the housing. It is constructed from a corrosion-resistant aluminum alloy.

Mounts onto Zoom Ring of Lens    Rotate Knob to Zoom with Lens    For Ports on Canon & Nikon MDX Housings    Only for Lenses Produced from 2013 On

Related Questions and Answers

Q: 1. Hi, I'm looking for o-rings for my Motormarine II (battery and back lid), could some of these fit? I belive the main one should be about 135mm wide.

A: We no longer have any o-rings that will fit the Sea & Sea Motormarine II camera.

Q: 2. Will this tray work with my Olympus PT-EP08 housing? I intend to utilize two (2) Sea & Sea YS-D1 strobes. Can you make a recommendation on the additional S&S arms, connectors, and accessories that I will require to complete my intended setup?

A: The Sea & Sea, Sea Arm 8 Camera Tray with Grip will work with the Olympus PT-EP08 Housing and one Sea & Sea YS-D1 strobe. Since you will be using two strobes get the Sea & Sea Sea Arm 8 Tray Set with Tray / Grip. Here is the link: a href= http://www.bhphotovideo.com/c/product/752909-REG/Sea_Sea_SS_SA8T_Sea_Arm_8_Tray.html target= _blank http://www.bhphotovideo.com/c/product/752909-REG/Sea_Sea_SS_SA8T_Sea_Arm_8_Tray.html/aIt is best to buy Sea & Sea, Sea Arm 8 SLR Set. This kit includes an 8.8 and 5.5 arm section. This will give you an arm that is long enough for wide-angle shooting. You could also bring the sections in close together for macro work. The Sea & Sea YS-D1 strobes include head adapters. But buying the Sea & Sea, Sea Arm 8 SLR Set is less expensive than buying the parts separately and not buying the head adapters. Here is the link: a href= http://www.bhphotovideo.com/c/product/733378-REG/Sea_Sea_SS_SA8SLR_Sea_Arm_8_SLR.html target= _blank http://www.bhphotovideo.com/c/product/733378-REG/Sea_Sea_SS_SA8SLR_Sea_Arm_8_SLR.html/a

Q: 3. Would this work on the newer YSD3 mk2 flash? Thanks

A: The Sea & Sea Battery Cap Silicone O-Ring is compatible with the Sea & Sea YS-D3 Lightning Underwater Strobe.

Q: 4. this is the only site that mentions batteries for this item - does it take them?

A: No, it uses natural daylight, and you, therefore, must keep your fingers clear of the small white aperture on top. You can try a small white led light with your other hand for use at night, as the compass is not normally visible without adequate overhead light.

Q: 5. Does this bag come with an insert? Or do they purposely not show you any pictures because it's an extra?

A: The inserts(core) is extra.

Q: 6. I currently have a YS-03 strobe and am looking to add a second strobe, possibly the YS-01. Do you know if I can link the two strobes so that the strength of the YS-03 flash is controlled by the YS-01 strobe in manual mode?

A: The YS-03 is an auto only strobe, and uses a pre-flash. So the YS-03 exposure is set by the camera's built-in flash. Since the YS-01 does not use the pre-flash in manual mode it will not fire. To use the YS-03 and the YS-01 together you have to set the YS-01 on TTL, not manual. It is best to use two YS-03, or even better to use two YS-01.

Q: 7. What core unit inserts are compatible with this backpack?

A: All core units for DSLR are compatible with the Shimoda Designs Explore 60 Backpack (Sea Pine). There are three options either 3 small DSLR core units, 1 small and 1 medium DSLR core unit stacked, or 1 large DLSR core unit.

Q: 8. Is the battery compartment isolated from the rest of the electronics?

A: Yes, and it is fully sealed against leakage.

Q: 9. Does this work on YS-D2?

A: YEs these should work with your YS-D2.

Q: 10. Will this still fit onto the case if I were to use a screw-on filter at the same time? I have the Nikon WP-N1 case.

A: That depends on the filter. You would have to try it.Most likely it would not fit.