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You cannot alter the back focal length of a lens without changing its optics. Specialized adapters exist to do this, but there is usually a large loss of image quality. Your best bet is to not use a DSLR lens, but to use a large format lens designed for use with bellows. They will have considerably longer back focal lengths and allow you the requisite ...


STF stands for "Smooth Transition Focus", and is a Sony-specific* term indicating that the lens includes an apodization filter to create smooth bokeh (out-of-focus blur) — and smooth bokeh is generally considered to be the best bokeh. So, you'd generally use it for non-studio portraiture or in other cases where that blur is an important artistic element. ...


TL;DR I am afraid that you need to evaluate the lenses individually. Rangefinder an DSLR lenses are often different in construction because both have different design goals and restrictions. RF lenses are often made to be smaller. RF lenses cannot be used from very close proximity, so no corrections or compromises for very close range are necessary. RF ...


I think there were a number of real reasons for 'a look', and most of those no longer apply...but others may have taken their place. The real ones IMHO are historic. 35mm Changed Photography Leica invented 35mm and suddenly a lot of professional reportage and suchlike became infinitely more portable. This meant that there were Leica type photographs, ...


A prime lens has a much simpler design, so for the same price, and weight, you can get larger lens elements and therefore a higher aperture. However, there are some other factors to what you're asking. In the case of a 18-55 zoom lens, the lens has to have a retrofocal design, because at the wide end you are going down to much smaller effective focal ...

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