The Sigma USB Dock for Sony A-Mount Lensesallows you to connect your Sigma Global Vision lenses to your computer in order to update firmware and adjust focus setting parameters using the Sigma Optimization Pro software.

This dock is only compatible with the Sigma Art, Contemporary, and Sports line lenses featuring a Sony A lens mount.

Update Lens Firmware and Adjust Settings    For Use with Sigma Global Vision Lenses    Compatible with Sony A-Mount Lenses

Once a Sigma Art, Contemporary, or Sports line lens is connected, you can use the Sigma Optimization Pro software to configure focus settings and update lens firmware.

For all lines of lenses, there are four categories for prime lenses and 16 categories (four options for focal length, four options for shooting distance) for zoom lenses available. These categories allow you to set certain focusing settings to better suit your personal shooting style.

If using a Sports line lens, additional lens configurations are available: three different AF speed modes to modify how quickly the lens changes focus; the ability to constrain focus distances within a specific range to suit your personal shooting habits; and three Optical Stabilizer modes to suit the manner in which you are shooting.

Related Questions and Answers

Q: 1. Sigma 30mms f1.4 Art lens fit to Nikon n5600, cannot auto focus. Pls advise. Tq

A: You can ask Nikon or sigma lens company sigma should be able to help you. Even Nikon USA should be able to tell for sure what you really need to know for sure. I don't have one so I would really check with one or the other for sure. Sorry.

Q: 2. Can this be used with the Sigma 24 mm 1.4?

A: Yes, it's compatible with Sigma 24mm f1.4 Art.

Q: 3. Does this work for 24-105mm f4?

A: Yes, it does.

Q: 4. Could this help with my Sigma a mount 120-400mm? Noticed skmeissues with focussing when I shot a professional soccer match this weekend. I have it adapted to my A7RII (bought used and adapted cause of the affordability)

A: The Sigma USB Dock for Sony A-Mount Lenses will only work with Sigma Global Vision lenses. These are the Art, Sports or Contemporary lenses. Not with the Sigma 120mm-400mm lens released in 2008.

Q: 5. I'm trying to decide between the Sigma 150-600mm and the Tamron 150-600mm. Why does the Sigma lens seem to need a software update and focus recal straight out of the box?

A: Both lenses are great lenses, but the Sigma, with the dock, allows you to make custom settings to the lenses for certain conditions, plus any updates for the lense. A simple for instance is, say with your camera when you put the long Sigma lense on, your exposure is too light or too dark. Instead of making exposure changes everytimr you use the lense, you can put it on the dock and program it to shoot dark or light. You never have to fool,with the camera exposure setting again

Q: 6. Does the Sigma USB Dock work on the older Sigma 120-300 2.8 zoom lenses or just the newer lenses?

A: This dock is only compatible with the Sigma Art, Contemporary, and Sports line lenses featuring a Nikon F lens mount. It is not compatible with the older Sigma 120-300mm f2.8 lens (Sigma model # 136101).

Q: 7. Is this for the 150-600 Contemporary?

A: Yes, its compatible.

Q: 8. Can this be used with Sigma DC 17-50 2.8 EX HSM?

A: Sorry, no.

Q: 9. Does it make sense to buy to upgrade firmware Sigma 18-35/1.8 for Sony? Or there was no update for this lens? I have it not work correctly through the LA-EA3 with A6300.

A: I don't think there is a firmware update for the Sony mount version of the 18-35mm f/1.8.However, you almost for sure need the dock to adjust your autofocus, because I have never heard of the 18-35 having perfect autofocus on a Sony camera yet. I had to do a lot of adjusting to get my focus correct.As for it not working with the la-ea3 and the a6300, I don't know if there is a fix for that.Good luck.

Q: 10. Is any kind of calibration aid (i.e., test chart) needed with this, or does the dock and software do it all?

A: Robert, you don't need a test chart, but I would recommend a ruler or yard stick propped up at an angle to the vertical of about 30-45 degrees with the low point of the stick closest to you and it pointing away from you. Put a rod of some kind in the ground pointing straight up and next to some point in the middle of the yard stick. That will be the point you focus on. Position your camera the distance away you want to check the calibration (the Sigma software gives you 4 distances to calibrate). Take the picture focusing on the vertical rod. Open the image full size and look at the marks on the ruler. If the tick directly next to the rod you set up is in focus, it is fine for that distance. If it is sharper further on or further in, then use the software to adjust the focus a little and try again. Do a search for Sigma Brand Video for a good primer on how to use the software (it does require user input). If you do buy it hook everything up immediately and make sure it works. Mine does not recognize the lens (150-600 contemporary). I've gotten a replacement dock and it is still not working several weeks after getting the lens and dock.