 Daphne Rubinstein |
Good all around lens for XTI I am looking for a lens for macro as well as portraits. I currently have the 18-55m kit lens and a 70-300 IS tele/zoom. Is it important to get one with a <2.8? I often have trouble with not being able to get enough light.
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Suzanne Colson |
If you often have trouble with not getting enough light then your only options are a 'faster' lens or a dedicated flash. How much you are looking to spend will dictate the suggestions some of us will give you.
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John P. Sandstedt |
Get the 50 mm f/1.4. With the 1.6 lens factor, this will allow you almost the ideal 90 mm portrait focal length.
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Suzanne Colson |
I have a 50mm f/1.4 and a 85mm f/1.8 and really like both for low light applications. I prefer my 85mm for focusing ability. It does not hunt as much, but it is a little long on my 1.6 crop sensor unfortunately.
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Daphne Rubinstein |
Thanks John and Suzanne. It is soooo confusing for someone who doesn't know a lot. What is the 1.6 lens factor? Do you have any experience purchasing online?
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Suzanne Colson |
No problem. Hoping I am in fact helping. The sensor on cameras such as the Rebel XT, XTi, 20D, 30D are smaller than a standard 35mm film camera. By saying that a camera has a 1.6 crop sensor it suggests that it is going to effectively crop the image when taking. To determine what the effective focal length of any lens is you multiply the lenses focal length by the 1.6. In the case of 50mm you end up with an effective focal length of 80mm when placed on the XTi (1.6 crop factor) You can read further on crop factor at the following: http://www.digital-slr-guide.com/crop-factor.html Hope this helps and any more questions fire away. We are all here to hopefully help.
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John P. Sandstedt |
The lens factor relates to the fact that the size of the chip is smaller than a 24X36 negative in a film camera. There are lots of threads that discuss the math involved; suffice it to say that it bears a similar relationship as a telephoto lens does to the image on the negative, shrinking the size of the image to that of the chip. Mathematically, the relationship for Canon cameras is a lens factor of 1.6; for Nikon's it's 1.5.
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Daphne Rubinstein |
As soon as I sent that last response I realized that I knew what you were talking about. You are all helping and I appreciate it. I am still trying to learn how to look at something and know what kind of settings would make for a great shot. I know I have taken some nice shots for a beginner but don't know exactly how I got them? I guess it just takes some time. I would also like to take some classes. Thanks again, I'll check out the web sites.
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