Being relatively inexpensive, the 7 element design is recommended as it produces a sharper image. A 100mm lens is then doubled to 200mm and so on. However, when you use converters, take into account that they will decrease the effective maximum aperture of the lens by 2 stops needed.
Another must consider is your f2.8 lenses will now effectively be a f5.6, so be careful. Shutter speed adjustments will be lens that you macro. A true macro lens is designed to give a 1:1 reproduction ratio, equal to alternative to macro lenses, is the life-size reproduction on the film used by a Post Production Photographer Los Angeles.
A macro lens with a 100mm is the ideal, especially if you want to photograph insects or spiders, or even flowers or plants. After all, they should be part of your wildlife experience. The net effect is super close-ups with a minimum loss in lens speed. There is a down side though — no infinity focus as the lens will only focus ‘close up.’
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