V1 and V2 Models
The V1 and V2 models cast more of a floodlight beam rather a spot light. These models are still high intensity UV and the UV beam coverage is slightly wider than the V3 models at shorter ranges. However, the range of the V1 and V2 UV beam is not as far reaching as the V3 models. So the V1 and V2 models are good choices for jobs where a very long UV beam throw is not critical. The rank for range or UV beam throw goes to the winner being the V3 models, next best is the V2, and then it’s the V1.
In contrast the V3 models (with the exception of the V3 365nm MINI) are designed for a much longer and further reaching UV beam. V3 have the highest UV intensity. The UV beam from the V3 models is more of a spot than a flood like with the V1 and V2 models. The V3 models are highest intensity UV, and the spot is adequate even for relatively close-up jobs, but for those that prefer or require a wider spread of UV then the V1 and V2 models may suit better.
So it depends on if you have absolute and clear requirements of beam range versus beam spread. Realistically speaking, the way UV is used in detection, which is by scanning a beam across an area of interest, the V3 models perform adequately. The range and intensity of the V3 models is something which sets them apart.
Last in-a-nutshell point. When it comes UV beam quality, the V3 365nm and the V3 365nm MINI are pretty much untouchable in terms of UV beam quality. Being 365nm wavelength the results you’ll witness are very superior to the wavelengths of 385nm, 395nm UV. The V3 models emitting at 365nm will give you a much higher level of visual results and performance – professionals and industry use this wavelength for very good reasons. Now that doesn’t mean you won’t get good results with the 385-395nm UV wavelength models, you will, but the highest quality best-in-class standard comes with the 365nm wavelength versions. And you’ll likely be upgrading to this wavelength anyway once you’ve graduated with the 385-395nm wavelength models. Most people do.