The two lenses I'm looking into for my digital camera (Nikon D50) are
70-300 mm DI f/4-5.6 Digital Series AF Zoom Lens
70-210 mm f/4.5-5.6 high speed AF Lens
The main reason I am considering the second one, is it's slightly cheaper. I was wondering if there was a benefit of it being high speed. They are both Quantaray made for Nikon
http://www.wolfcamera.com/product/251666...
http://www.wolfcamera.com/product/251664... These lenses are very similar. The only difference I perceive is the zoom and macro capability. These are 2 pluses. Macro allows more detail of an object, so if you want to take extreme close ups of say a flower or skin, macro would be ideal.
Considering the slight price diff. I would go with the 70-300 mm. A lens is one of the most important aspects of your photograph! I see you are looking @ Wolf Camera, a more knowledgeable dealer is Calumet photo, there prices are almost always better and you can ask a ton of q's . Here is the link, happy hunting!
http://www.calumetphoto.com/ A fast lens takes in more light so that it can create proper exposure more quickly. Judging by the specs, I would say the 70-300 was faster (5.6/300 vs 5.6/210).
Maybe they are talking about the speed of the autofocus? The more expensive one is fastest and best It sounds like you are comparing two different brands of lenses - not Nikon either.
The term "high speed" USUALLY refers to the aperture, but in this case, I am pretty sure it is the manufacturers' claim about focus speed.
If you have two specific lenses in mind, please "add details" or post a new question and tell us ALL the details, especially the brand, and we will be better able to help you. The f numbers tell you the speed of the lens. You have two similar lense with different focal lengths. The f4-5.6 is the faster of the two at the 70mm position, however fully extended, they have the same speed, it seems, but for longer zooms, the 5.6 70-300 is faster than the other lens.
Aside from the focal lengths, I would tell you that it does not make a lot of difference, the faster of the two is only 1/2 stop faster, or less.
Secondly, I simply do not like Quantaray lenses. In my opinion that are a cheap aftermarket piece of glass and wolf puts them on the Nikons and Canons for the sole purpose of profit for the sale. Therefore they can tell you that the lense are equal to the Canon or Nikon and make more money from the sale.
For aftermarket lenses, I like Vivitar. I have a Sigma, but don't like it all that much, the rest of my lenses are made by the camera manufacturer (Olympus).
You don't have to buy lenses from Wolf, you can buy them from www.keh.com, used, but in like new condition and save money getting the best for your dollar.
High speed in this case means that you can take the picture with less light, but if 4-5.6 will work, so will 4.5-5.6. |
