| You bought that DSLR for the versatility and | | | | speeds than the f/4, making it a better choice if |
| ability to change equipment to handle any and all | | | | you are doing indoor sports where you will need |
| situations. There is one piece of equipment you | | | | the fastest possible setup. |
| don't want to leave on the shelf. It is the Canon | | | | Each of these models is also equipped with an |
| 70-200mm L lens. | | | | ultrasonic motor, making the focus time almost |
| There are actually four of these critters, and | | | | instant. There is no searching as with other lesser |
| there is plenty of discussion about which is the | | | | quality products. The non-rotating barrel is also an |
| best. But the truth is that any one of the four is | | | | asset when it is focusing. Auto focus is also |
| an excellent choice. There are two differences | | | | present in conjunction with the ultrasonic motor. |
| which make up the four variations. First, there is | | | | The differences among the four Canon |
| an f/4 version and an f/2.8 version. Add to that | | | | 70-200mm lenses are in the aperture (f/4 or f |
| the IS version of each, and the total is four. | | | | 2.8) and the inclusion or exclusion of IS (image |
| First, it is important to know that each | | | | stabilization). |
| 70-200mm L lens version has excellent build | | | | Starting with a non-IS f/4, you get two |
| quality and superior glass. The "L" in the name | | | | advantages. First you will pay the least of the |
| actually means Luxury. It is the highest quality of | | | | four, in fact, you will pay quite a bit less - about |
| glass and building materials, making it much more | | | | one-third the price of the most expensive one. |
| expensive than non-L glass. There is | | | | The second advantage is the weight. Because |
| low-dispersion and ultra-low dispersion glass in each | | | | there is less glass, the f/4 is much smaller and |
| of the four types. This basically means that the | | | | lighter than the f/2.8.This factor alone has been |
| glass used (dispersion glass) is not subject to the | | | | the deciding one for many photographers. The |
| same deterioration of quality as non-dispersion | | | | extra weight of an f/2.8 lens can cause fatigue |
| glass. It will not distort the images, making the | | | | much quicker. |
| image quality much better. | | | | As you add IS and wider aperture range, you |
| Another plus for the Canon 70-200mm lenses is | | | | increase the price and the weight with each |
| the non-rotating front elements. This feature is | | | | addition. But as mentioned earlier, any one of |
| important for maintaining focal quality, but it is also | | | | these Canon 70-200mm Lenses will make a |
| important if you are using certain filters, such as | | | | welcome addition to your camera bag. Due to the |
| circular polarizers. | | | | zoom range, there is so much versatility. You can |
| With the high range of focal length, having either f | | | | shoot portraits, modified landscapes (not enough |
| 4 or f/2.8 allows you, the photographer to have | | | | wide angle to use for dedicated landscape |
| relatively low light photos without the danger of | | | | photography), sports, nature, and almost anything |
| poor quality that comes with higher apertures. | | | | you can think to shoot. |
| Obviously, the f/2.8 will allow faster shutter | | | | |