Hot answers tagged cheap
"Cheapest" is easy to answer: the Rokinon 500mm f/8.0 (also sold under the Samyang or Walimex brands), and for a beginner, it might even be the best, to gain experience more than to make great photos, because it's really not a good lens at all (is anyone surprised, at a $200 price point?): horribly slow, manual focus, comparatively low optical quality. But ...
A ColorHug might make a great gift for a photographer. For those who haven't heard of it, the ColorHug is a monitor calibration tool (a display colorimeter) that is completely open source. At GBP 60/USD 100, it's a fraction of the price of competing products and has most of the functionality.
It depends if you want to kill your camera. I wouldn't trust the bags, particularly the cheap ones. Fairly reliable ones might work, but they are harder to reliably test since they rely on zippers and velcro rather than o-rings and pressure seals. They are more designed more to protect against surface usage where the camera may get splashed or fall on the ...
Optical slave flashes are somewhat finicky because most cameras with a builtin flash have one or more pre-flashes, for red-eye reduction as well as to help with focusing and exposure metering (e.g. Canon's E-TTL). A simple optical slave will trigger on those and then be unavailable for the main flash. There are two way to tackle this problem: Turn off the ...
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