canon 75-300mm dslr camera lens image
Mike_311
i am going to buy a dslr camera, im not a pro photographer. I just want to take some really good pictures of my family and use it when traveling. I just want better picture than my point and shoot will provide.
the camera comes with an 18-55mm Image stabilized lens, and i can get the 75-300mm f/4-5.6 III Telephoto Zoom Lens for an additional $100.
should get the extra lens or will the stock lens be good enough for now and maybe buy the additional lens later?
Answer
Pay the $100 and get the lens.
Usual price for it is $150-$200 and it's a very useful lens.
http://www.amazon.com/Canon-75-300mm-4-5-6-Telephoto-Cameras/dp/B00004THD0/ref=sr_1_1?ie=UTF8&s=electronics&qid=1277216889&sr=1-1
http://www.amazon.com/Canon-75-300mm-4-5-6-Telephoto-Cameras/dp/B00004THCZ/ref=sr_1_2?ie=UTF8&s=electronics&qid=1277216889&sr=1-2
Pay the $100 and get the lens.
Usual price for it is $150-$200 and it's a very useful lens.
http://www.amazon.com/Canon-75-300mm-4-5-6-Telephoto-Cameras/dp/B00004THD0/ref=sr_1_1?ie=UTF8&s=electronics&qid=1277216889&sr=1-1
http://www.amazon.com/Canon-75-300mm-4-5-6-Telephoto-Cameras/dp/B00004THCZ/ref=sr_1_2?ie=UTF8&s=electronics&qid=1277216889&sr=1-2
what is the optical zoom on Canon EF 75-300mm lens and how to determent the optical zoom on Telephoto Lenses?
kolin v
I cant figure out how to see how much optical zoom lens have.
Can you please explain me how to determine the optical zoom on lens because i have never seen any of optical zoom numbers on the box or lens itself. So please help me. Thank you.
Answer
You don't really need a website to do this conversion, as it is 3rd grade math. Just divide the little number into the big number and you get your "X" factor.
An 18-55 zoom is a 3X zoom. A 70-210 zoom is also a 3X zoom. How can this be? You know that a 200 mm lens wold give you a much larger image than a 55 mm lens, right? The thing is, with a non-SLR camera, we tend to almost never pay attention to the focal length of the lens. It would be incredibly confusing if we tried to anyway! Image magnification is a direct function of the sensor size. There are many different sensors out there and without having some standard reference, comparing focal lengths would also become meaningless. This is why everyone still refers to the "35 mm equivalent."
Back to your question...
Your 75-300 mm lens is technically a "4X" zoom, but who cares? On a Canon digital camera, it behaves like a 480 mm lens and that beats out pretty much ANY of the so-called super zoom point and shoot cameras for telephoto power. Well, it's certainly in the same range as the best, but the image quality is immensely better on an SLR sensor.
In other words... The "power" expressed in terms of [some number]X doesn't really mean that much. This is especially true in digital SLR's. What matters is the actual focal length of the lens. Fortunately - at least for sake of comparison - the majority of DSLR's have pretty much the same magnification factor and that is around 1.5 to 1.6. It makes direct comparisons a lot easier, but you have to develop a sense of what constitutes a "long" vs. a "moderate" telephoto.
Unless and until we have a major paradigm shift, it will still be helpful to think in terms of 35 mm equivalents when you are buying a lens. This is the "language" that we speak, using 35 mm as the de facto standard. Focal length comparisons make more sense that expressing the magnification by "zoom power."
Here's a chart that I'm making up just to get you started. It is in 35 mm equivalents. If you are putting a lens of this focal length on most DSLR's, you would have to do some math. Multiply the numbers I gave by .67 if the camera has a 1.5 "lens factor" or by .625 if it has a 1.6 factor. For example, in my list, I say that 50 mm is the "normal" lens for 35 mm cameras. If the DSLR has a factor of 1.5, this would mean that a 33.5 mm lens would be "normal" for that DSLR.
Ultra Wide - 10-20
Wide Angle - 24-35
Normal - 45-55 (50 mm is the accepted "normal")
Medium Tele - 85-135
Telephoto - 150-300
Super Tele - 400-600
If you are not familiar with the power of these lenses, you might want to check out my tutorial on the subject:
http://www.flickr.com/photos/7189769@N04/476181737/
http://www.flickr.com/photos/samfeinstein/1245831147/
You don't really need a website to do this conversion, as it is 3rd grade math. Just divide the little number into the big number and you get your "X" factor.
An 18-55 zoom is a 3X zoom. A 70-210 zoom is also a 3X zoom. How can this be? You know that a 200 mm lens wold give you a much larger image than a 55 mm lens, right? The thing is, with a non-SLR camera, we tend to almost never pay attention to the focal length of the lens. It would be incredibly confusing if we tried to anyway! Image magnification is a direct function of the sensor size. There are many different sensors out there and without having some standard reference, comparing focal lengths would also become meaningless. This is why everyone still refers to the "35 mm equivalent."
Back to your question...
Your 75-300 mm lens is technically a "4X" zoom, but who cares? On a Canon digital camera, it behaves like a 480 mm lens and that beats out pretty much ANY of the so-called super zoom point and shoot cameras for telephoto power. Well, it's certainly in the same range as the best, but the image quality is immensely better on an SLR sensor.
In other words... The "power" expressed in terms of [some number]X doesn't really mean that much. This is especially true in digital SLR's. What matters is the actual focal length of the lens. Fortunately - at least for sake of comparison - the majority of DSLR's have pretty much the same magnification factor and that is around 1.5 to 1.6. It makes direct comparisons a lot easier, but you have to develop a sense of what constitutes a "long" vs. a "moderate" telephoto.
Unless and until we have a major paradigm shift, it will still be helpful to think in terms of 35 mm equivalents when you are buying a lens. This is the "language" that we speak, using 35 mm as the de facto standard. Focal length comparisons make more sense that expressing the magnification by "zoom power."
Here's a chart that I'm making up just to get you started. It is in 35 mm equivalents. If you are putting a lens of this focal length on most DSLR's, you would have to do some math. Multiply the numbers I gave by .67 if the camera has a 1.5 "lens factor" or by .625 if it has a 1.6 factor. For example, in my list, I say that 50 mm is the "normal" lens for 35 mm cameras. If the DSLR has a factor of 1.5, this would mean that a 33.5 mm lens would be "normal" for that DSLR.
Ultra Wide - 10-20
Wide Angle - 24-35
Normal - 45-55 (50 mm is the accepted "normal")
Medium Tele - 85-135
Telephoto - 150-300
Super Tele - 400-600
If you are not familiar with the power of these lenses, you might want to check out my tutorial on the subject:
http://www.flickr.com/photos/7189769@N04/476181737/
http://www.flickr.com/photos/samfeinstein/1245831147/
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