The best minimalist travel gadgets in 2019 (in pictures)
Here are a selection of must-have travel accessories which bring down the bulk and weight of your luggage.
How image sensors on digital SLR cameras give a smaller field of view for a photographer.
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Digital difference
The image sensors on most digital SLR cameras are smaller than a frame of 35mm film on an old-school SLR. That means the outer edges of the image aren't registered, and the field of view is effectively narrower.
Caption by: Bill Detwiler
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