In Part Three, I talked about how blurry images can be desirable. Today I  will talk about the merits (or lack there of)  of sharp lenses. Conventional  photography wisdom states that you should always use the best lenses. What is  the purpose of shooting with the best lenses? What's the difference between a  professional lens and an amateur lens? The two key differences are that professional  lenses are sharper (ie. more detail and sharpness – see Part 2 and Part 3) and  they can gather more light, which means that you will be able to shoot in lower  lighting conditions while keeping your shutter speed high (ie. prevent motion  blur); and you have more room to play with your aperture and therefore the  depth of field. Having said this, professional lenses are much more expensive  than amateur lenses; sometimes as much as an order of magnitude. They are also  larger and heavier than a consumer rated lens. The question begs, “Do you  really need that much lens?” The answer depends the intended use for your  pictures. If you are making posters or billboards or have a commercial use for  your images you may need the best lenses on the market. If you are just posting  images on Facebook perhaps not. 
If you are doing more than posting on Facebook but you can't afford the  professional lenses, what can you do? My advice would be to start thinking  outside the box and making that soft look a part of your work; make it a part of your style. Why not?
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