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The advantage of these lenses is in the simplicity of the construction and consequence low cost. A studio photographer, that always takes off same the types of photographs can consider this possibility;? Zoom: in this type of lenses it is possible to control through the lens the proximity of the subject of its photo. In the distance focal opening and varies in function of the regulation of the lens. Next step, to understand what it is written in the lens of its digital machine. Generally in its specification the lenses present first in the distance focal and in according to opening.

Lenses with a number for focal distance and one for opening are fixed lenses and present the following format: nnn mm, f/nn. Lenses zoom present two numbers for each characteristic, some thing thus: nn-nnn mm; f/n.n-n.nPara to illustrate everything what it was displayed so far we go to analyze and to compare two classic lenses:? Lens marks 18-105mm focal f/3.5-5.6Distncia: 0 variable, of 18 the 105mmAbertura: 0 variable, of 3.5 the 5.6Indicao: ideal lens when the object is situated the shortness or average distance. It has more opening and minor focal distance.? Lens marks 70-300mm focal f/4.5-5.6Distncia: 0 variable, of 70 the 300mmAbertura: 0 variable, of 4.5 the 5.6Indicao: Ideal for photos with objects the average and long distance, with bigger focal and lesser distance aberturConcluindo our line of reasoning, we recommend you who have taken in consideration following when choosing its lens:? The more versatile the lens, more complex its more expensive construction and therefore the product. Good and cheap? It forgets? The physical principles of optics become impossible to project a lens that allows to maximum opening and focal distance in one same lens. If you it likes to photograph everything what it sees for there, and it wants to always have in hands the ideal equipment, probably goes to need to have a game of 2 or 3 lenses to cover all the situations? Perhaps in case that it is not in its plans to load for a game of lenses is valid the penalty there to think about an intermediate lens zoom, tending for the type of more common photos for you. If to tend for photos of close privileges minor focal distance and bigger opening.

For photos of average and long distance it thinks about privileging greater focal distance and lesser opening. If it will be thinking about buying photograph equipment, is felt invited to check our store: Finally, if you to feel itself in conditions to think, would like asking for a favor to it: I am proprietor of a virtual store that imports photograph equipment (among others things) of the United States for Brazil and is making a research in the direction to understand which would be the ideal pair of lenses for an amateur photographer. The idea is to offer to the customer some options of combo (machine, lens 1, lente2, stock market and card of memory) that they allow it to take off good photos in the majority of the situations of its daily one. I below thank suggestions in the space of commentaries. One I hug to all and my gratefulness for the aid. Almeidawww.demiami.com.br Joo