Works as advertised, will wirelessly transmit the photos, as they are taken, from the camera to your computer. Setup is a bit tricky and some technical computer-knowledge is needed to do it right. Works well with a Mac, but the setup software (needed once) only runs on Windows. Nikon stated that Mac software is in the works. I wish it supported 802.11n for faster transfers.
Review 2 for WT-4A Wireless Transmitter
Not that great
PostedOctober 20, 2011
Nikon could do better
For the price this is sold at Nikon could do much better. It's hard to set up, not very stable, NOT wireless (has a USB cord), and it could be faster. But, that said it's the only one there is... So, I use it everyday.
Review 3 for WT-4A Wireless Transmitter
unstable connection more trouble than it is worth
PostedOctober 3, 2010
Location Atlanta, GA
Favorite Subject Portrait
Nikon Family 21+ years
Experience More than a year
Role Professional photographer
For a $700 accessory, this should work flawlessly. Imagine an apple airport...that is what I hoped for. Instead, you must setup the network carefully and manually using arcane software. Once set up, the connection gets lost when either camera or WT4a battery gets low, and sometimes just after a long bout of shooting it will lose connection. Reconnection of any reliability requires a restart of the computer. Transfer times for RAW files is way too long, jpegs work fine. Since I shoot professionally, this is an unacceptable but at times necessary process. For most purposes I have switched to shooting tethered with a 15' USB cable between Mac and D3 into aperture. This connection works as the wireless connection should--photos are kept on the card and on the computer (WT4a and camera control pro only load photos to the computer without a backup), and I can at the same time specify another backup. I can also have import presets automatically applied to the photos, and it is virtually instant in preview. With the rare times that require the WT4a, the Camera control pro software will allow live view and control of the remote camera with more detail than tethered shooting will. But you are stuck with a connection that has a 2 hour limit in my testing. This item is probably best for pros who shoot sports with an assistant on the sidelines. In those cases it might be worth the investment.
What part of wireless is a three foot USB cord? The wireless for the D2x was great. It worked as part of the camera. It fit nicely on the bottom of the camera and used the power from the camera. This unit is a box with a battery slot in it. It has a three foot USB cord to connect it to the camera... When the battery dies there is no warning in the camera. The D2x wireless everything would die, much nicer. As this is a little more stable and the signal is strong it's nice, but all the nice things really get out weighed by the bad stuff.