Best keychain sized flash, with different settings.
349250
Best keychain flashlight, with 4 different settings. Would prefer a push button light, but this is the only keychain flashlight, that has a strobe setting, that I'm aware of. The standard AAA battery makes replacing the battery easy. I would recommend taking off the keychain it comes with. It will break. If you only need one setting to walking in the dark from point A to B. Then get the Nano Streamlight. Which is the smallest & very bright edc keychain light you can buy. It's only $5-$8 on Amazon. I've chosen to keep Olight I3S in the car. The strobe could be handy to flag down help, or warn others of my car stopped along the roadway.
387429
The flash setting is a bit too fast but otherwise very nice.
3540354
I bought this vivitar 285hv flash for off-camera lighting, and it worked great with the Pt-04 wireless flash trigger set I have. The SB-600 I have will go into standby mode in a minute or two if I don't use it. This Vivitar flash won't, and that's a good thing because I don't have to wake it up. It is always up and ready to be fired. It may use more power that way, but I don't care since I have a lot of rechargeable AA batteries ready. Great flash !!!
1091985
I have an early model Pentax DSLR (K2000), which has a built in flash, but it's rather anemic.  After researching add-on flashes for the hot-shoe on the camera, it seemed to me that I would either need to buy some kind of after-market strobe, or cross my fingers and hope to find a decent used Pentax strobe I could afford.  Pentax's AF540FGZ is their top-of-the-line strobe, and new they start at about $400 and go up.  Through Amazon I located a very nice used strobe at a camera dealer, and picked it up for a little over $200.  I wasn't sure what would arrive in the box, but what was delivered was a perfect AF540FGZ.  I believe the dealer that the unit is used, but I can't see any evidence of it.  It works perfectly with my K2000, takes great pictures and is really a very versatile strobe light.  I have an original Pentax SF1, with the then top-of-the-line AF400 strobe, which in and of itself is an excellent flash.  But it works by way of TTL (through the lens) metering, and digital SLR s today use P-TTL.  The oldAF400, though in perfect shape, won't work with the K2000.  Here's the good part about all of this:  The AF540FGZ is so versatile it can do TTL metering, so I can use it on any of my Pentax s, old or new.  Great flash unit, really good price, and excellent service from the dealer I purchased from.  If you're interested in one of these flashes, go for it!  Happy hunting.
4264365
X800n has all the features you need from a speedlight except for the built-in radio triggers, which are getting more and more trendy these days. iTTL, Manual, Strobo, HSS, SCS, wireless master/slave modes are all there.

The build quality is very good. Good body design and construction. Looks more like a Canon flash than Nikon one though :). The flash has weather sealing, so it should be able to take some minor water splashing, but I haven't bothered testing it :)

X8000n is very powerful. GN is 60 at ISO100, 200mm. My tests showed that it's not overstated unlike with some other third-party flashes.

With Eneloop batteries, I'm getting 2.4-2.5 second recycling time at full power, which one of the fastest I've seen. Like on most modern flashes, the recycling is silent, so there is no capacitor noise.

Frame to frame exposures seems to be quite consistent. No complaints there.

The flash head rotates 360 degrees, but the release lock takes a bit too much (to my taste) force to press. Not bad, but can be improved.

Flash zoom range is from 20mm to 200mm. Again, for a modern flash, that's what you'd expect. The diffusion panel gets you the 14mm light spread.

I really like the control wheel on the flash. Cheaper speedlights often use just buttons. The wheel really speeds things up when you make adjustments.

The LCD is of good size (similar to&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Nikon-SB-910/dp/B0050YG3CU/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Nikon SB-910</a>). Pixel has its own menu system. It's easy to figure out, and I doubt that you'll need a manual especially if you know how to use speedlights in general.

I've got 3 of these flashes and was able to test the CLS. Works like a charm. Whether as a master or slave. The triggering is reliable. The exposures are good.

The dumb optical triggering was useful to me when I used the flashes as slaves with a studio strobe setup (S1 mode). The S2 mode (the one that ignores the iTTL pre-flashes) is yet to be used in a real life scenario, but the tests were fine.

I got to overheat these flashes during some very heavy use. I'm glad they have multiple levels of overheating protection, otherwise I would have fried them :). They cool down and recover after some time. In my case, the batteries got really hot. So, I replaced them to keep shooting for some more.

X8000n has an external power socket, but unfortunately it's not compatible with the Nikon power packs. You'd need to buy a Pixel power pack if you want to use external power source.

The sync port is PC type, which is OK but a mini-phone jack would have been better. Personally, however, I don't care that much about the sync port, since I'm mostly doing wireless.

Overall, Pixel X800n is very impressive and very cheap, too. So far, all 3 flashes performed well. However, there are still fairly new, so time will tell if they are truly reliable, but so far so good. Bravo, Pixel! Keep it up. The next version should have the built-in radio triggering ;)
259129
This flash works great on my D800. It is powerful, recycles quickly and offers ETTL and high speed sync. I use YN 603 triggers to use it off camera in manual mode and use it in TTL mode on camera. The build is solid. It does not do commander mode master, but can receive commander mode signals. I'm pretty new to flash, but I'd say this flash offers great performance, versatility and value. I have to admit, I have a hard time programming it to get it in the right mode for off camera work, which is greatly simplified by using the YN 603 triggers. My best shots have gotten so much better after getting into flash. This unit is a great entry point.
1974209
Absolutely without a doubt the best keychain penlight available, regardless of price (and I've owned MANY). Low mode is super low, perfect for using in a tent late at night when your eyes are adjusted to the dark (many lights of this type do not go low enough and will kill your night vision). Medium is perfect for everyday tasks, and High is surprisingly bright for such a tiny light. Square threads make the head rotation super smooth. Reversible clip is great for pocket carry or for a makeshift headlamp when clipped to the brim of a hat.

The only drawback is the chain and clip; they're junk. The clip will pull apart with just a small bit of force. I replaced the chain with a tiny split ring and McGizmo #2 clip from Berkeley Point to easily attach it to my keychain. Now it's the perfect EDC keychain light.
3926116
This flash works great on my Nikon DSLR.  Plenty of power for bounce flash.  Flash zooms when your lens zooms.  TTL is accurate whether bounced or direct.  The included accessories are a bonus.  The gift card will get you a couple of mounted 16x20s for free.  Quite a bargain for $50.
**Edited after 1 1/2 yearsI reduced my 5-star to a 4-star because of one aggravating feature.  After about 2 minutes the unit turns all the way off.  It may flash a time or two after that, then quit. Then you have to restart it and reset the power setting you wanted.
2409701
I love this ring lite. It's great for up close macro photography. I deliberately chose this one as it came with the most adapters to fit your SLR lenses. The adapters screw in to the filter threading on your lenses/filters. The ring lite then clips on to the adapters. The range is quite limited, effective between 1 and 3 feet. It has several modes, left and right flash where either the left side or right side LED's fire, full flash where all LED's fire, and light setting where the LED's stay on. You can also vary the intensity of the lite for both flash and allways on modes.

I tend to use it in one of two ways. If I am in one of the automatic modes on my cannon t3i or t4i, I will use the light on as that way the cam will set the proper ISO and apeture for the ammount of light. I will use it in flash mode in the creative modes when I feel like controlling the shoot and have all the time in the world to get the right shot.

Overall this is a great flash unit. With macro photography light is a tricky aspect of the shot. The ring lites eliminate the shadow cast by the lens if you're using the camera's on board flash or a lower speedlite. You need your flash to get past the lens and onto the subject. This lite works well and is a steal at the price.
4938330
I have had this flash for 3.5 years now.  I originally got it as a present with my D40 and it has been fantastic and I haven't had a need for anything else until recently. I have racked up THOUSANDS and THOUSANDS of triggers with this unit with zero issues. This flash is pretty powerful for such a small package!  To give you an idea I have been using it to light huge rooms in million dollar mansions in Princeton NJ! I recently switched careers from Networking to Photography and I currently do real estate photography in Princeton.  These houses have huge rooms and super high ceilings and this flash has been doing me well.  I have been using it cranked up to full power though with flash compensation on my D90 +1 and only now has its limits shown themselves.  I am investing in off camera flashes and something more powerful but this flash has gotten me here and I can't say anything bad about it.

The flash flips up vertically,  awesome.  It only uses 2 AA batts,  awesome.  It's light, awesome.  There is no thinking involved to use this flash.  Turn the flash compensation up or down if needed, its a solid unit.  I would invest in the Stofen diffuser to get the light all around you, it is worth the few bucks and fits perfectly.

If you want more info on it (or more preaching as it seems sometimes) check out Ken Rockwell's site, (just google it) he is a pompous arse and Nikon fan boy buy I skip over his "opinions" and use his site for getting examples, tech specs etc.

I recommend using rechargeable NiMh batteries in this unit.  Alkalines will work good and last a decent while but the Nimh's recycle faster, have a larger capacity and don't heat up after repeated use that bad.  I have used the Engergizer Lithitums in this unit and while shooting houses walking around the batteries release their charge so fast they would get hot enough to deform the plastic casing around the outside of the battery and made the flash very hot.  I would not recommend using the lithiums for fear of damaging the unit.  The same use with NiMh's did not have the same results,  batteries were warm at best.

For the price this is fantastic flash and if you even care remotely about the quality of your pics get it,  the pop up flashes on all cameras is basically worthless for useful lighting.  This unit is light and easy to use and I don't mind lugging around my D90 with grip loaded with 2 batteries and this flash.
3549307
Not only do I use this flash for portraits and macro, but this flash is so strong, I can use this for wildlife photography too! As the name suggests, the flash can fire up to 6 meters with it at full zoom and power. I recommend using this flash with&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Sanyo-XX-Battery-Powered-by-eneloop-2500mAh-typical-2400-mAh-minimum-High-Capacity-4-Pack-AA-Ni-MH-Pre-Charged-Rechargeable-Batteries/dp/B0058GZWXQ/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Sanyo XX Battery Powered by eneloop, 2500mAh typical / 2400 mAh minimum High Capacity, 4 Pack AA Ni-MH Pre-Charged Rechargeable Batteries</a>&nbsp;as these batteries hold some extra charge and do charge up the flash a bit quicker, only trade off is they can only be recharged 500 times. I can not make any comments about the new radio controlled wireless feature as I got nothing to use it with, but the optical wireless system works great with the pop up flash on my&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Canon-EOS-7D-18-MP-CMOS-Digital-SLR-Camera-with-3-Inch-LCD-Body-Only/dp/B002NEGTTW/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Canon EOS 7D 18 MP CMOS Digital SLR Camera with 3-Inch LCD (Body Only)</a>. I don't have any Speedlite commanders so I use the pop up flash on my 7D. I also enjoy how this flash system will compensate for crop sensor bodies so no light will be wasted firing the beam wider than it needs to. Works great. I also enjoy the bounce card and wide panel that is built-in to the flash, although, I do prefer using a real diffuser than the wide panel as it will work better, but it should help you out in a pinch. The flash head can be rotated in any direction just holding down 1 button which is great.

Now let's give you some of the pros and cons in list form:
Pros:
- Can flash up to 6 meters
- Compensates for crop sensor bodies
- No whine during recharge (heard Canon stepped up the whine to ultrasound so you can't hear it)
- Recharges quickly
- Built-in high voltage port for faster recycling with an external battery pack up to 1 second recycle speed
- Acts as slave or master flash using both radio controlled and optical system
- Built-in external light meter so you can use this flash with other branded cameras
- Menus easy to understand, I figured it out in 30 minutes without reading the instruction menu
- Has built-in wide panel and bounce card

Cons:
- Is a bit heavy on your camera
- The price was a bit high, would prefer it to be a bit cheaper

What is in the pack:
- The flash (obviously)
- Flash foot with tripod hole (for putting the the floor or mounting to a tripod)
- Protective case for flash with pocket for flash foot
- Filter holder and 2 filters in a folder (light orange and dark orange)
- A bag for filter holder and filters
- Instruction Manual, warranty card, etc...

Overall I would recommend this flash. It is great!
2983370
Brightest little keychain flashlight that I've encountered so far. Until now I had been using a Vizeri Tactical flashlight with the latest LED Cree technology, but the T20 trumps it in power and is roughly half the size in girth and overall length. Wish I had known about this before purchasing various LED flashlights promising hyperbolic-lumens and solid structural integrity. Needless to say, this one sets the bar and I know whom I'll be buying from in the future.
3350980
The Good: Small.  It's small enough to fit on my keychain.  That took a little doing though.  I had a tiny split ring and clip from another small flashlight that I put on this one.  It's very powerful and very convenient.  It isn't my primary light, but since it's always on me, it's a backup I an rely on.  I've bought two as my first was likes so much, I had to literally give it away.
The Bad:  The 500 lumens doesn't last long.  It really is a more moderate flashlight most of the time.  It is a bit big for a keychain flashlight.  While I'm ok with it, many might not be.  The interface is probably the biggest weakness.  It takes a bit to go from mode to mode.  The strobe may as well not exist as it takes too much to activate reliably.
The Verdict:  I love this little flashlight.  I can only see giving it up when a smaller, brighter and easier to use flashlight comes along.  Until then, it'll be with me wherever I go.
4024685
EDIT: I LOVE THIS THING.
I really, really do. Whomever designed the FL-LM3 should be proud; it's kinda' perfect. The automatic camera sync is superb and the adjustable angle is extremely versatile, so I get crisp images with the utmost of ease. The tiny size squeezes inside the very smallest corner of my camera bag, too.

ANYHOW... back to the original review:

I read that this flash would function on my GX8, and it did - right out of its box. The FL-LM3 fits onto my camera far better, however, now that I've modified its foot specifically for the Lumix hot shoe's ever-so-slightly smaller dimensions. The mod is simple for anyone who's accustomed to such work, too, but it does require legit dexterity (and it'll surely void any warranty.) My GX8's viewfinder doesn't tilt up when the flash is attached, but the FL-LM3 adds so much functionality in such a tiny, portable unit (with tilt and swivel, no less!) that I don't mind at all.
3842469
It is The best flash that I have ever owned. It works well even using a 300+zoom, being more than 25 meters away. You can always find the right angle for perfect illumination, or use the filters to diffuse the light for more natural color.
2588181
Great powerful flash, and nicely portable.  I tested it against my alien bee ab1600 and the godox won for power, dead center at least, maybe the alien bee has a bigger spread.  Regardless, I love the unit.  It's a little cold compared to daylight white balance, but not too far off.  nice digital controls too.  Power cord connector gets weak over time, but I use mine for hundreds of shots daily, and hand held, so the cord does take a beating.  I got a replacement cord after the first year or two.  I don't use their remotes, but the flash is nice.
3299488
This is an incredible flash.  Normally, I travel with a Nikon SB910 because of its great power, but after having toured Switzerland for a couple of weeks late last year, I came to the conclusion that for travel purposes, I did not need to carry a flash brick with me.  Since I do a lot of walking when I travel, not to mention getting in-and-out of trains and buses, my travel needs are not for power, but rather for portability.  When I came in contact with the Nissan i40 I immediately knew this was the ideal flash for a travel photographer.  It fits just about anywhere, even in one of your trouser's pockets.  More than that, it provides incredible power for such a small unit, with controls that are immediately visually there and not hidden in some menu.  Even with the mighty Nikon SB910 you can't avoid having to press buttons and rotate dials to get to the right settings.  The sheer simplicity of the i40 is a testament to the fact that manufacturers don't need to over-engineer their products to make them incredible practical.  What's more, the i40 also proves that you don't need a massive size to achieve sufficient power.  My impression is that that it matches or exceeds the power of a Nikon SB700 in the field, and for most travel photography, that is more than enough.  One thing to keep in mind, though: if you use flash modifiers, some of them will not fit or be too heavy for the Nissan i40.  Start with small modifiers like the smaller Rouge FlashBenders and you will be fine.