[52mm] This flash has a high level of light and you need to compensate with your f stop settings and aperture.

[3 x 3 x 0.1"] I have only had this ring flash for three weeks and I have fallen in love with it. I purchased it specifically to illuminate my water drop/splash photography. Contrary to many reviews indicating the lack of power, this flash has plenty of punch to light up my work at f/11, giving me ample depth of field. I am using the ring flash as a single light using the left and right tubes set a 1/1024 power resulting in a 1/30,000sec flash duration, plenty to freeze the splash action. Se attached image. I recommend this unit for serious professional Macro work.

[3 x 3 x 0.1"] I've begun experimenting with outdoor night macro photography. The images are amazing.

[0.1 lb] exactly what is needed in a very solid metal build.

[3 x 3 x 0.1"] I am an amateur who dabbles in event, street, and sports photography. I wanted to move into portraiture because I get a lot of requests this time of year to take (free) prom pictures of the debs in the 'hood. I needed a softer light and could only afford one purchase. The results with this unit, even combined with simple ambient light were just what I wanted and, frankly, startingly good. It was plug-and-play and continues to work without issue. It does require that red-eye (and pet-eye) be removed in post, but that is very simple. I now think that I am a better photographer than I really am, but at 67, I'm okay with that.

[0.1 lb] Have had it less than a week and have not used it for Macro yet but shot all weekend at a comicon and I love the soft and/or harsh light that it puts on portraits. It was easy to use and adjust light. Best lights I own.

[0.1 lb] I use this flash for dental close-up photography. Depth of field is key to getting good photos. With this flash I can take photos at F36-F40 on my Nikon 105mm macro and D7100 body. Sturdy construction and easy to use. Highly recommended!

[0.1 lb] I bought this to replace an older cheap ring light that just stopped working. It is quality built, and I love the iTTL for my Nikon. The last one did not have iTTL and I had to use it on manual mode. The refresh time is fast, the adapter rings work for all of my lenses. Overall very satisfied with this unit for both Macro and fashion photography.

[52mm] First of all, I purchased this ring flash to be used on a nikon 200mm F/4 macro lens. I always wanted this lens and finally decided to add this lens to my nikon family of glass. Now I have a new photographic assignment, that well require a ring light because I well be photographing artificial iris patients. As soon as I received the ring flash it went right on the 200mm without any problem using the 58mm adaptor ring (included) with the nice case that holds all of the adaptor rings as well as the command and flash unit. Simple to use and understand, and perfect exposures with a very small learning curve. I well be using this flash for all kinds of macro opportunity to use it both inside the studio, and outside as weather permits.

[52mm] From the very first the shop to the ordering was quick easy great experience. I could not expect more.