Works great.....much better than fixed center point types.
342591
Works great.....nice stiff spring under the center point retracts and keeps it centered until the drive points make contact.  Much better than a fixed center point.
303700
I had to replace a failing trackball and was not happy with the ergonomics of the trackballs that were available. I happened to check an MX1000 display model in a store that was out of stock. Saved a bunch of bucks getting it through Amazon.

It works beautifully. Set up is easy, the positions of the buttons are very good for using the features- they aren't hard to distinguish, find or easy to push in error.  Although I still occasionally forget it's a mouse versus trackball, the new laser technology is good enough to make the transition negligible. And the ergonomic improvement is really worth it for me. My main 'problem' is when I have to use a mouse at work (intermittently, about 2-3 hours out of 12) and notice how slow and clumsy they seem now.

 I have been using this for a month + and recharged the battery a couple of times - very fast and convenient. I just try to stick it in the charger when I close up for the day on a regular basis.

I liked the first wireless I had, but it died young. This works even better. The five stars are based on the performance so far - Logitech is generally pretty reliable.

My system is a Mac G4 dual processor with TIger OS, plus Virtual PC with Windows 2000 Pro.
4316273
I tried ebaying a transit, and was disappointed, so I came back to this transit.  The optics are clear and focus well beyond the 200 foot usable range specified.

Had to do some calibrating of the leveling vial, but the instructions made it clear how to do so.  The vernier is trickier, but I finally figured that out as well.  An example in the documentation of a reading that required the use of the vernier would be helpful.  My son and I learned how to use this in a couple of hours, both for leveling and establishing true north/south lines.

The construction seems fine, didn't expect 100% metal, but there was a lot more than I thought there would be.  Sturdy enough, I believe.  I will treat it with respect, but I would do that in any case.

Small farm, some construction anticipated.  Also plan to use this for elevations, and it seems perfect for that as well.

For the price, I don't see how you could go wrong.
541412
pin point very well. use it with the metal detector. better than paying 250.00 for the same thing from a hobby store. does the job well.
422475
I just love this sort of pointing device. less wrist movement, fine control etc.
People fall into 4 camps for pointing devices.
> don't care /mouse users.
> touch screen/ touch pad users.
> index finger track ball users.
and
> thumb track ball users.
This is for that last category of people . This trackball works decent at a range, and works great on the desk- no cables to get in the way and small usb dongel. Cleaning the ball and socket is easy and intuitive. Multiple falls from desk height to the floor and it still works well (as long as you don't loose the ball!). And, in my experience, easy on the batteries (maybe 2 or 3 times a YEAR at most with using it 8+ hrs a day 5 days a week).
3223962
This is great for anyone who uses a CAD or 3D application, but even more so it you use several. I was jumping back and forth between Rhino, Fusion 360, SolidThinking Evolve, Keyshot and a couple others. It became impossible to remember the navigational controls of each program. This great device eliminates all of the navigational confusion, because with it, they all navigate/function the same way. I've been using it for a few months now, carrying it to and from work everyday in my backpack. It's held up great. Very good quality device, I'd never want to go back to just a mouse.
4169640
Lets me use my tripod more effectively!  MUCH better than "timed", especially for birds!  GREAT for stitched panoramas.

No instructions, but not that hard to figure out. A couple of minutes experimenting, and you're ready!

Besides, it's Nikon.
2746377
For under 50 bucks, this works great.  Zeroed in easily and the dot is easy to pick out.  Has wide view optics so you can pick out targets easily yet zero in quickly.  Very accurate.  Much better than open or ghost sight with wide vision.  Solid construction.  Aluminum.  Mounts easily.
3746003
After seeing how much a friend liked a similar right-angle finder on his Canon SLR, I wondered if there was anything available for my Pentax *ist 35mm camera. After searching and only finding older right angle finders for much older Pentax models I stumbled on this beauty.

The finder is well constructed; light in weight but does not feel flimsy. Probably most appealing feature for everyone looking at this product is that it appears to be compatible with almost all SLRs, regardless of brand. Adapters allow one to attach the finder to a particular brand of camera. The fit on my Pentax was snug but not so tight that I couldn't take it off without excessive force. Though I have not made much use of the 2x magnification, I believe it would be very helpful in macro work.

The only drawback to this finder is the rather loose feel to the diopter control. The upper portion of the tube rotates to adapt the viewing focus to the user's comfort. The rotation is very fluid, but it almost feels too easy to turn. If the photographer were to orient the camera vertically, for instance, one can swivel the finder also into an upright position. Swiveling the finder, however, can bump the diopter thus throwing it out of focus slightly. This is easily fixed, but one must be aware of it when operating the camera, so be careful!

I highly recommend this right angle finder. It does its job well and costs maybe a third of the price of the comparable Canon version (which, of course, is only available for Canon cameras). It makes photography easier on my back and easy on my wallet!
2578922
Great value  You know that you use this to find top dead center so a cam can be properly timed.  Only small complaint that can be easily overcome is that the bolt turns too easily which can give you a false zeroing.  A little teflon tape or rtv on the threads make it harder to spin and it stays in position.  You can also slightly deform the threads and get the same result.
3781523
The dual focus (rack and pinion stand for coarse and straight knurled knob at the cable end for fine) really makes it easy to use.  The dimmer on the LEDs is very nice to have.  I recommended that my firm buy this to replace a finicky older model made by another company.  We have been very happy with this model.  We use Digital Viewer for the software, as it has more photo adjustments than the Opti-Tek version.
2454460
These work really well, I'm using them on 4130 Chromoly and haven't noticed any dulling of any sort. I'll need to use them a lot in order to see any noticeable dulling because after a few holes they still acted brand new.

The center bit is definitely centered. I didn't have any shimmying of the circular blade.

I can't wait to use these on my next project.
560952
Used this to "dial-in" my SHARP Aquos Quattron.  After several attempts to calibrate the set using other calibration tools that resulted in less-than-acceptable hues (because of the additional yellow subpixel perhaps) I decided to give this a go.  Well, it worked great. There are a multitude of patterns and a supplied blue gel filter that helped in setting general color luminance and hues in blue, magenta and cyan.  Using an addition red gel filter (not supplied) I was able to set luminance in the red, yellow and magenta, and fine-tune the hues in orange, yellow and magenta, while balancing green, yellow and cyan.  If you chose to use a green gel filter, you could, no doubt, perfect the image. I am happy with the results as the set has never looked better. So, for a little money, time and patience, this is as close to a professional calibration you can achieve on your own.
543740
Very good... Works great... Like the different settings.
1811051
I've gone through a few calibrators over the year.  Pantone HUEY (2 of those), Xrite ColorMunki Smile, and older Sypder3Pros.  They've all more or less done the trick, balancing out colors and screen tint, etc.  The one thing I like most about them is the way they correct blown out light greys.  Light grey is used everywhere in Windows, and it amazes me how many things I thought were just straight white actually have a nice grey tone to them.  I feel I get less eye strain on a corrected monitor, and when working with photos and graphics, the colors feel more balanced and lifelike.

Sure enough, I built a new system a couple weeks ago and needed to immediately get to work.  I designed an entire brochure for a new product at work before remembering, ah, I didn't calibrate these monitors (I knew something was off but it was a new computer in a new environment, so I didn't think much of it).  I calibrated the monitor and reopened my brochure project and...oh dear, the colors were nowhere near where they ought to be.  It was a couple hours of adjusting to get everything where I was happy.  We sent the brochures off to the printer, and when they showed up a week later, the colors were spot on... well, as close as you can get between print and screen.  It certainly beats the days before I had calibrated monitors, where matching colors could only be accurately done with PANTONE color guides and proof printers.  Those things still have their place, absolutely, but with this calibrator, the image on your monitor is so much closer to real life than ever was possible before (at least at this price point).

I have both the Spyder5PRO and Spyder5Express.  Both of them excel at their tasks of monitor calibration.  In fact, I'd have to say it appears that they're the exact same hardware.  The PANTONE Huey was like this too, same exact hardware but a flipped bit determined between the standard and premium models.  The difference is in what the software is allowed to do.

Calibrating a 2-3 monitor setup with the PRO was really easy, and I did it on several machines I use.  I was concerned that Datacolor would lock you down to a number of machines but if they do, I haven't hit that limit yet.  Calibration takes a few minutes.  On my monitors, I couldn't get the PRO to lay flat.  My monitors have no backward tilt so the Sypder just kinda bounced around.  I could have tilted my monitors back to get it to lie down, but I usually lock them into a pretty solid position once I'm happy because I'm really picky about it.  I had to lightly hold the Spyder against the monitor, with just the lightest single-finger touch, not so much that it disrupted the LCD liquid and caused that acid-trip effect.  My arm got a little tired, so I rigged up my water bottle leaning against it on a box.  That worked a treat.  A few minutes later, it was done and I was running a pass on my second monitor.  Easy peasy, and now the monitors both match very close (different display types, IPS vs TFT, so it won't be perfect).
4009800
I really prefer using a camera with an optical viewfinder.  It just feels more comfortable.  Doubtless, I'm no spring chicken, and years on a manual SLR develops a strong habit.  Even so, there's a performance element involved here.

So most of the professional reviews berate Nikon for keeping it on the camera.  Makes it too "chunky".  Maybe it doesn't fit into your jean's pocket, but the size and weight are very comfortable.  The reviews complain that you only see 80% of the captured image.  Well, if 100% composition is important, by all means consult the LCD.  No problem.  But for relatively efficient framing and shots, you just got to hit the auto zoom to where you got what you want, center it and snap.  Perfection can be adjusted and cropped afterwards.

The only issue I had was being sure that what was centered was in focus.  The autofocus is sophisticated, but can let you down in a slightly crowded scene.  This is where I found adjusting from "medium" to "spot" focus made all the difference in the world using the optical viewfinder.  You don't have to worry about losing what you want in focus to a more complicated algorithm.  (And of course, there is no problem centering on what you want, reframing and getting the composition you're looking for.)

Add a solid metal body, superior lens, generous telephoto, and a wealth of controls, and you got just about all the camera you could use this side of "Blow Up".  I got what I need to capture the raw data.  Now it's on to the software.
2158021
I like this focuser!  Installed on Orion AstroView 120ST.  The stock focuser would "wiggle" at the beginning of a knob turn thus shift the image inside the eyepiece.  The Crayford has no such freeplay.  Both coarse and fine adjustment knobs on the Crayford have a solid feel to them.  The fine adjustment knob works as anticipated and is most helpful at high magnification.  The smooth action minimizes vibration of the scope allowing good focus (or best focus possible).  This was a Christmas gift from my wife.  And though I'm an amateur star gazer, I am very thankful to have this.

One drawback, and almost worthy of one star reduction:  The attach holes did not line up perfectly with the holes on the scope.  Took a little more elbow grease than seemed reasonable to get the screws to engage and fully seat.  The screw threads may have been damaged in the process, but that's ok.  I don't anticipate removing the focuser any time soon.  Were it not for the smooth action of the focuser itself, I would have rated 4 stars.