New answers tagged macro-lenses
You'll need a lens with a minimum focus distance small enough to accommodate your rig. (See also How close can a lens focus?) There are several ways to accomplish this. Your secondary macro lens, which mounts on the front of the existing lens, is one way to accomplish this, but won't necessarily be sufficient and certainly won't give the best image quality. ...
I would recommend Sigma AF 150mm f/2.8 EX DG HSM APO Macro OS. Fast and silence focus, 1:1 Maximum Reproduction Ratio And Fullframe. if you need to crop the picture, it is also possible.
From my experience Sigma 70-200mm f2.8 EX DG Macro HSM II was good for macro photography. I used it for micro structure photographs and has good performance. The selection of lens depends on the field you are interested in.
Lens 2. Its a pseudo macro lens. 1/2 magnification. (true macro is 1/1). And the focal length of it is typical for macro work. (90-105mm FF eq.). The 28mm even with macro extender wouldnt give much of a macro creamy bokeh look.
Macro lenses will usually stay at a fixed focal length because A) it is difficult to focus with zoom changing B) Zoom lenses can present stability issues when close to a subject There are a few macro lenses that the photographer can "lock" at the minimum focal length.
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