jim_foley4

<p>I have a Velbon like this and it works fine. It also has side-to-side movement unlike the Arca rail. There is some backlash in the screws and gears but if you're thinking of doing a lot of macro focus stacking you might need a micrometer stage. Adding a generic Acra plate to the bottom and clamp to the top is not expensive and you can use them for other things as well. I also have an old macro rail from a Vivitar bellows set that cost next to nothing on the used market. That is quite rigid and has a rack and pinion gear movement. I would say that if you want high precision you have to pay for it but there are a lot of options below a micrometer stage that will get the job done. Good luck.</p>

<p>Thanks Phil. I did buy the WU-1 for the D7100. I stumbled across a Nikon refurb from B&H I think. It actually works pretty well. My only gripe is that it ONLY works with a smart phone or tablet. It would be great if Nikon would do the same functionality for a Windows PC. I put the FlashAir in my wife's point&shoot.</p>

<p>Erik - I now use the GP-1 if I want GPS. The only thing I don't like about it is that it takes a little while to find a location if you turn off the camera a lot. Which I tend to do. It's really a shame that the little Bluetooth adaptors are either dedicated to GPS or file transfer. The Nikon WU-1 won't even connect to a regular PC. Such an artificial limitation.</p>

<p>Did you look at the MC-35 or MC-35A? You would have to use an older hand-held GPS that supports serial communication (not USB). I have this cable and an older Garman unit but I have not looked at all the data recorded with it. The GPS I have does not support a magnetic compass. Bearings are determined by direction of motion. I assume the MC-35 is powered by the camera but the GPS runs a very long time on it's own battery. Also you can us an external antenna on the GPS. So you can keep the GPS in your pocket/pack and put the antenna on your hat for better reception. The other good thing about this is the GPS can stay on all the time so you don't have to reestablish satellite links.</p>

<p>Also check for Rear Curtain Sync and Slow Sync. Both are set with the flash mode button. I don't think they are in the menu. I got caught with Rear Curtain Sync on my D7100 this weekend. It worked like it was supposed to but it sure wasn't what I wanted at the time.</p>

<p>I have a D7100 and I was wondering if anyone is using the Toshiba FlashAir. I've seen plenty of posts on the Eye-Fi but I am wondering about compatibility with regard to the D7100. The D7100 manual also only refers to Eye-Fi. Also, other than memory speed is there any other difference between the Toshiba Class 6 and Class 8 FlashAir cards when working with the D7100. Any other pointers with regard to FlashAir use would also be appreciated. Thanks.</p> <p>Jim</p>