Works, but identical to cheaper Sigma PLE Lens Pen
937512
This really works for a camera, in my experience, as most of the other reviews also proclaim.  Nikon and Sigma must use the same OEM, though, as I also ordered a Sigma PLE Lens cleaner (from Amazon) and it was cheaper and identical except for the color of the plastic slide button.
2882797
This cap works well on my Panasonic 12-32mm.  It doesn't seem to be the highest quality but is very convenient and has worked well enough for several weeks, and is cheaper and smaller than the other auto caps available for this lens.  It is a fine product but I have since found the following combo which includes a version of this cap with front threads and a hood and is worth the little additional cost for the added versatility--<a data-hook="product-link-linked" class="a-link-normal" href="/JW-Black-Auto-Lens-Cap-Lens-Hood-Kit-For-Olympus-M-ZUIKO-DIGITAL-ED-14-42mm-f-3-5-5-6-EZ-Panasonic-Lumix-G-Vario-12-32mm-f-3-5-5-6-ASPH-Lens-JW-Cleaning-Cloth/dp/B01IBD17QI/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">JW Black Auto Lens Cap & Lens Hood Kit For Olympus M.ZUIKO DIGITAL ED 14-42mm f/3.5-5.6 EZ Panasonic Lumix G Vario 12-32mm f/3.5-5.6 ASPH. Lens+JW Cleaning Cloth</a>
2180490
They sell this as an addon to the Sigma 70-300 lens, but the problem is that it doesn't fit that lens, not even close. It was cheap and that is about all I can say for it. Don't add it to the Sigma lens, you will be wasting your money.
799083
This is a nifty little device for landscape photography, long exposures, HDR, etc.  As the case with most Canon products there's an expectation it will work, and obviously be compatable with your Canon camera....and on those terms it succeeds.

I don't have much negative to say about this remote switch, other than it does feel a little plastic-y and not particularly durable.  At the price point it isn't completely unreasonable, and in fact may lend itself towards being a lighter product.  If I can get 5+ years out of it that'll be fine.

Whether you get the official Canon product or a knockoff I can't really say, but I would definitely recommend having one of these in your camera bag.
1350986
I bought this LensPen and it works fine, but once I had it in hand I visited lenspen.com and discovered that this model has been recently updated and what I have is the old version. I don't know what has changed besides the look but I wish I had known that I was getting last year's model.
2585969
I got this as a backup for lost Canon lens caps; it goes on fine, but it kind of sits above the lens a little and doesn't really *lock* onto the lens.  It often pops off as I pull the lens out of my bag.  I would probably just stick with the real Canon caps, even though they're much more expensive.
542603
After using the Nikon P5100 and the P6000, both with wide angle lens attachments, I wanted the same for the 7100.
Granted, this is not the Nikon (pricy) wide angle lens so I guess I shouldn't expect the same performance.
Barrel distortion is SEVERE so I doubt I'll be using the wide angle much.

The telephone lens however is surprisingly good, for the money.

As for the cleaning pen, useless.
The unit doesn't seal properly so the cleaning fluid simply leaks out when you put the pen down horizontally.

The cleaning pen is now where it belongs, in the trash.

Apart from that, all's good.
4249561
An important thing to note: This does not match original lens that comes with E-PL1. You will need a 40.5mm to 58mm converter. Other than that, a great (cheap) alternative to an actual macro lens!
Also, this will not work with AF. I'm quite happy with my first two photos, given I'm still learning MF. :)
1030711
Pros:
- It works fine.  (Used on a Sony digital video cam and Macbook)

Cons:
- not gold tip as shown on the pic. (Do not expect it to have gold tips for this price anyway)
- Cable is black, again not accurate as shown.
1374435
Moneywise, is a good alternative to the very expensive item from Right Stuff but there's one flaw (non-existent to some, minor to others and big for me as I own quite a few Minolta Lenses); It won't work, at least horizontally (90% of your shots) if you have Sony's A-Mount adapter attached to the camera. There's not enough space to enter in the rail once the adapter is connected, so beware!
1212652
I gave this a 1 star rating because it is NOT a product of LENSPEN, but a knock-off.  The price is cheaper than the brand name, but it should not be listed as the brand
839589
I have a Sigma PC15, which I love, and the transmitter stopped working a couple months ago. I probably should upgrade, but this was a much cheaper way of getting more life out of my trusty PC15.
2278089
The lens pen worked fine.  I needed it for my binoculars and it did a good job cleaning the lens.
3883087
I have not purchased or used this particular item. However I have had Lenspen, Nikkon and one "generic" Lens cleaning pen and NONE of them came with a cap over the brush end. I've seen the lack of a cap mentioned on numerous comments concerning this pen but it not specific to this brand of pen. You may wish to take this into consideration when you review comments.
1155031
This seems to work just fine with my different tripods.  Is seems you don't need to spend more money for a fancier name brand unit.
3783062
This filter is pretty reasonable compared to B+W, and seems to perform in a satisfactory manner. The multi-coating is evident, and seems to not contribute to lens flare when used on some of my "legacy" (read: OLD) lenses. In fact, I suspect it may be helping to get more life out of some vintage Minolta and Nikon glass.
1175912
I purchased this L bracket for my Nikon 800, not expecting much given the price; however, it fits perfectly. I had a screw problem like the other reviewer, except that the screw that did come with mine was too long.  Easy fix and not worth a star.  I usually set the bracket about 3/4" out from the body to accommodate access to the ports on the left side of the camera, again, it works fine in this configuration.  One of my concerns was the fit precision for my tripod.  I have one L-bracket where the Arca Wedge is too narrow.  Not this one, it fits snug and works with my tripod head.  Obviously the brackets from the two big names out there are going to be heftier and more durable, but I can buy 6-8 of these at the price of the top of the line products.  as an avid shooter, I'd rather save my savings on this for better lenses!