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…

For a couple of months I have used the Laowa 15mm f/4 wide angle macro from Venus Optics Company and have just penned a very detailed review and sent it off to Keith Wilson editor of WildPlanet photo-magazine with a large selection of images. I have posted some interim images and comments as my relationship with this lens has deepened. It has also set me thinking (not unusual) in what I want out of wide angle lenses. Have written a great deal on this already in both blogs,…