Master Composition: Free landscape photography cheat sheet- Digital Camera World
5 Photography Hacks You Must Try: DIY camera filters, shapes for bokeh, backdrops, light deflectors, light boxes and diffusers
Composition: Rule of Thirds Comparison of the Rule of Thirds for Composition
Photography Basics: the No. 1 cheat sheet for metering and exposure Digital Camera World - shows various histograms and explains them
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Trick, Photography Book - Camera Shake: the ultimate cheat sheet for tripods, monopods and shooting handheld - Now YOU Can Create Mind-Blowing Artistic Images With Top Secret Photography Tutorials With Step-By-Step Instructions!
Architecture photography cheat sheet: tips for shooting exteriors, interiors and Images