Enjoy smooth, seamless lens operation underwater when using AquaTech's SGZ Lens Port Zoom Gear for the Sigma 12-24mm F/4 Art lens. Mount the Delrin gear on your lens's zoom ring, then mount your camera in the compatible AquaTech Elite housing. The housing's zoom control knob will meet up with the zoom gear and allow you to select the perfect focal length with a simple twist of the knob.

Works with Sigma Zoom 12-24mm f/4 ART lens.

Related Questions and Answers

Q: 1. Can focus and aperture be manually adjusted when mounted via a lens mount adapter that lacks electronic contacts?

A: The focus can be controlled manually on an adapter without electronic contacts. However, that adapter would need some type of aperture control built into it.

Q: 2. can a ND filter be attached to it?

A: Yes, Here is one system that is designed for the Sigma 12-24 f/4 Google nisi filters

Q: 3. Does this lens have a rear gel slot?

A: There is no gel slot.

Q: 4. For shooting real estate, would you choose this lens again or possibly go with the 14-24mm f2.8 sigma art?

A: For shooting real estate, I would go with the 12-24mm, always better to have the capability of a wider lens when you need it.

Q: 5. Does it take NiSi V5 100mm filter holder?

A: Yes, the NiSI V5 100mm Holder can fit the Laowa 12-24mm f/5.6 Zoom Lens for Sony E along with a NiSI 77mm adapter ring, which is normally included with the holder.

Q: 6. Can a person who is otherwise a die-hard Canon lens fan be satisfied with this Sigma lens? The comparable Canon 11-24mm seems just too expensive.

A: Buying a brand-new lens does not necessarily means you will get a good copy. You will need to test the lens out yourself. If you are lucky, then you will have a good copy. If not, you will need to calibrate it with the DSLR you are using to adjust the sharpness.Unfortunately, I did not get a good copy so I am waiting for USB Dock for Canon EF-Mount Lenses to arrive so that I can use it to calibrate my Sigma lens. I believe once it's calibrated correctly for your DSLR, the sharpness should be as good as the Canon 11-24mm.

Q: 7. What size is the image circle, will it cover a 33x44mm sensor?

A: This lens' image circle will not cover a 33x44mm sensor.

Q: 8. Anyone use this on an EOS R?

A: Yes, the Sigma 12-24mm f/4 DG HSM Art Lens for Canon EF will work fine on the Canon EOS R and EOS RP when used with the Canon EF-EOS R adapter. The link for that is, https://bhpho.to/2MaiSuh.

Q: 9. I ordered this for my 16-35 2.8L II Lens with PD-85 Port on a Delphin housing and the ring is very loose on my lens, there is no grip for zooming when in the case. Is this a faulty piece?

A: If you are installing the ring correctly and it is loose on your lens then you will need to speak with AquaTech directly for a resolution. Please email our customer support and they will be able to assist further than we can through this medium. You also need to make sure you are using the P-70ex with the PD-85 dome port for this lens.

Q: 10. auto focus?

A: The Venus Optics Laowa 12-24mm f/5.6 Zoom Lens for Sony E is a manual focus lens. It will not autofocus.