Depth of field calculator widget

New version of the Depth of Field calculator (Mac widget) is available for download at: Redex.

There is also a web version of the calculator available – a complete camera/lens database included with the appropriate digital crop factor. So if you never need calculate depth of field for a given lens and aperture, or have no interest in the hyperfocal focusing distance, you can at least see what equivalent focal length lens you have on your digital SLR. 

Over-elaborate but fun

Most impressed with the refurbished Kelvingrove Art Gallery and Museum in Glasgow – this is a Photoshop Photomerge of three image shot in RAW on my little Olympus SP-350. The Raw files were white balanced and tonally adjusted before the lens distortion was corrected. The three corrected images were merged and the final 16-bit file then very gently tone mapped to adjusted the appearance of the big globe lights. The image is rather large for the blog page so just right click to open it in a new window.

Composition frames

Anyone who has read my book Composition will realise I don’t put great faith in geometric compositional aids. That said, it is informative to see you own pictures analysed using the classic tools like the Golden Ratio. A neat piece of Mac software arrives – FrameAway 1.0 that lets you drop a transparent grid over your images to see how they are composed. It is nothing more than a visualisation tool and does no cropping but it very elegant. Tiny download at http://frameaway.dv8.ro/index.html