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JJC White Flash Diffuser for Canon Speedlite 270EX
on 11 March 2011
I have used diffusers with other flashguns, so I thought it would be worth trying this one out with my Speedlite 270EXCanon Speedlite 270EX Flash Unit. It fits over the flash head, but I was surprised at how hard it had to pushed to fix it safely into position. I tried it out with the flash mounted on my Canon G11Canon PowerShot G11 Digital Camera (High Sensitivity 10.0 MP, 5x Zoom, 2.8 Inch Vari-Angle LCD). Results indoors were satisfactory, although whenever possible I prefer bounced flash, for which the diffuser is not necessary. If you do use it in this way with the flash head angled towards the ceiling, you may find that the subject is unevenly lit. I found it also worked well outdoors in strong sunlight, when I used it on the 270EX to provide fill-in light, although the differences between photographs taken with and without the diffuser were not dramatic. I was disappointed to find that it did not work well when photographing light subjects against dark night skies. In these conditions, white circles appeared in the corners and just off the centre of my pictures. Assuming that the culprit must have been dust or grease on the lens, I cleaned the front element thoroughly and tried again, but the results were identical. I then removed the diffuser and repeated the test. To my great surprise, the photographs were perfect, with no white circles. I noticed that even with the flash head on its wide setting the diffuser protruded beyond the front element of the G11's lens, so I wondered if the white circles were the result of light spilling from the bottom of the diffuser and causing reflections in the lens elements. I have just tested my theory by sticking a strip of black tape to one of the longer sides of the diffuser, which I then attached to the 270EX with the side covered by the tape facing downwards towards the camera lens. This DIY solution proved effective, and the pictures I took were free of white circles. I wonder, however, why the manufacturer failed to identify and solve this problem before the product was launched. When you pay a relatively high price for what is essentially a piece of white plastic, you assume that you will not have to redesign it so that it will do its job effectively; for this reason, I have given it only three stars.