No matter where one lives, you are surrounded by the small and extraordinary – insects, spiders, flowers. This is a wild world in every sense but easily overlooked because the inhabitants, like most life-forms on Earth, are very small. Macro Photography allows you can peer into this world, witness and document incredible species with behavior that most people never see. At Learn Macro, we share nature & macro photography ramblings from across the Atlantic. —Clay Bolt (Montana, USA) and Paul Harcourt Davies (Orvieto, Italy).
I particularly like working with rectangular fisheye lenses for my wide-angle macro work because they exhibit better good close-focusing capability than normal ultra-wide lenses. I have extolled the virtues of the Sigma 15 mm f/2.8 rectangular fisheye on many occasions when I was using it on APS-C format (with Nikon bodies and with a Sony NEX 7). Using a lens like this, designed for full frame, with formats smaller than that, permits the utilisation of the centre part of the image circle. The images then show remarkably little distortion – just a bit of curvature towards the edges: sharpness is excellent as is contrast and the close focusing capability is remarkable. In fact, this was the main lens that both Clay Bolt and I used when gathering images for our e-book: Wide-Angle Macro | The Essential Guide.
Of course, I can use also this lens with the micro 4/3 (MFT) format and a suitable adapter (Nikon to micro 4/3) but then it behaves as a 30 mm wide-angle compared with 22.5 mm forAPS-C, that is, unless you use the Metabones SpeedBooster. Then with the model I use it behaves as a 19.2mm lens with a maximum aperture 1 1/3 times wider than f/2.8…around f/1.8 – but more about that in the next post.
With a change of format to MFT, I wanted to go that bit wider…
Samyang 7.5 mm f/3 .5 rectangular fisheye