![]() Not too many rain covers satisfy both requirements. Its front opening has to be large enough to fit the rain deflector. For daytime use, it needs to be black, in order to block light from reflecting from the back of the filter. The battery sold by Dynamic Perception to power their Stage Zero dolly has a capability of 32WH, but being only a 12V battery, it is lighter (200g v 440g) and smaller. In addition, its built-in multi-voltage capability means that I can also use it to power my cameras (the 5D2 and 5D3 require 7.5V) as well as other electronic devices. The Powerstream Universal lithium ion battery pack PST-MP3500 (also Tekkeon MP3450) offers 45WH, which is enough to run the rain deflector all night. I attached it to a barrel jack (2.1mm x 5.5mm) compatible with two different batteries which serve other purposes as well. Instead, I modified the power cable with stripped leads that comes standard. You can buy ready-to-use cables for a variety of video batteries. The deflector requires a 12V battery – a standard in the movie world – which isn’t included. That clamp may look overkill, but I chose it because of its additional holes which I use to make sure that the assembly does not rotate out of alignment. Since all my cameras have quick-release plates, I added a B2 LLR II quick release clamp from Really Right Stuff. I replaced the stock rods with a pair of longer and lighter 9″ carbon fiber rods from Redrock Micro. Following his recommendations, I ended up mounting it using a movie-standard 15mm rod system based on the JAG35 baseplate. ![]() At 3000 RPM, this would instantly scratch the glass (a $300 custom Tiffen filter). In addition, Steve Bumgardner (watch his behind the scenes video for “moonbows”) warned me that the filter mount can easily go out of alignment, causing a contact between the spinning glass and the lens. Unless one uses a lens with a tripod mount, the weight would also be poorly distributed, certainly a potential source of vibration with long exposures. While one can mount it like a filter, I was wary of loading a lens with a relatively heavy accessory this way. Not many units are sold, so they charge quite a premium for it – even a simple power cable costs $140.Īfter buying the deflector for $1725, you need to accessorize it, which isn’t as obvious as it seems. There is only one commercially available spinning rain deflector, the Israel-made Spintec, imported in the US by InnoVision Optics, a company which sells highly specialized equipment to the movie industry. It’s quite tricky to make because you want high velocity rotation, but you don’t want any vibration. ![]() This creates a centrifugal effect and a vacuum effect which throws water out of the glass. It works by spinning a clear piece of glass in front of the lens at a high velocity (3000 rotations per minute). The rain deflector is not a piece of equipment you hear about in photography circles. Under those circumstances, unless you can photograph from above the spray (as at Cascade Falls), the only way to get clear images is to use a rain deflector. ![]() This means no stopping even when spray is coming at you, and no downtime to wipe the lens. While with some effort it is sometimes possible to deal with the spray while making still images, in time-lapse photography one needs to take pictures continuously, for extended periods of time. The displacement of the rainbow as the moon moves across the sky adds interest. The motion of the stars gives them a presence beyond sparse pinpoints. The image differs substantially only by the presence of stars in the sky, however on a full moon night, only the brightest stars are visible.įor this reason, I have found moonbows to be one of the subjects where a time-lapse movie is more compelling than a still image. A long moonlit exposure looks almost the same as a daylight exposure that one would be able to make with a strong neutral density filter. While the camera can capture colors that the eye doesn’t see (as explained in my previous blog post about moonbows), the way it works doesn’t capture the experience that well. Watching a moonbow with your own eyes is an awesome experience.
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