I'm not sure what you mean by limited used market, there's truckloads of used Pentax gear available. Going pro depends on what you mean. If you mean full frame, then there is no upgrade path at ...
Amateur Photographer on MSN
How to use manual focus – top 20 tips
Why use manual focus (MF) when autofocus (AF) is accurate, lightning-quick and can track fast-moving subjects such as ...
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