We have allowed Dr Daniel Oi a second image in this Gallery, above. “This is a picture of where I work, the Centre for Mathematical Sciences at the University of Cam-
bridge”, he writes. “The architecture provides endless inspiration. I took four long exposures of the grass-covered roof using the AF 17-35mm ƒ2.8-4 at f11, 30s exposure
and ISO100 with NR. These were then stitched using Panorama Tools and other Open Source software. The dynamic range of the 7D is evident in the fact that no masking,
compositing, dodging or burning was required, just global curve adjustments of the final stitched image after converting from raw to 16-bit. The red lights in the centre
are IR illuminators for the CCTVs. The IR cut filter on the 7D is very effective in eliminating IR sensitivity of the CCD, which rendered the grass red in some pictures taken
on a different DSLR by a friend.” Left: taken at the G8 Summit in Scotland this summer – protest rally at Auchterarder the day the Gleneagles meeting opened. By Gordon
Hart of Auchetrarder, Dynax 7D, 24-105mm lens, 1/1000th at ƒ4.5, ISO 400. Below: the picture-postcard colours of Toberymory on the Isle of Mull, even more of a tourist
hotspot since the children’s TV programme Balamory used the little port as a location. By John Price of Ringmer, East Sussex. Konica Minolta A2 at to 28mm, ISO 64,
Extra Fine JPEG, white balance set to Shade, 1/160th at ƒ11. By using the Shade setting, John has ensured a warm rendering despite the blue seaside light quality.
13 photoworld
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