I have a camera that has a 10X optical zoom. Is the optical lens size the little number that is written on (by) the lens? f=6.3-63mm?
Sorry. I honestly don't know this. :p
Thank you for your help!
Answer
It will say on the lens something like 5-60mm, 1:2.8-3.4.
Yes, the f6.3-60mm is the focal length of your lens. The second half of that is the max aperture range. at 6.3mm it can use a 2.8 aperture. at 60mm it can use a 3.4. Now it gets even trickier. Your camera has a small sensor. So a camera that has a bigger sensor has a different mm size (focal length) but is the same lens. The 6.3 on your camera is 18mm on a small DSLR and 28mm on a large DSLR and 37mm, 42 and 50mm on even larger cameras. It's all about field of view. You are not seeing further with a lens, you are seeing tighter. A 6.3 lens on a 4mm sensor and 52mm lens on a 6"x7" sheet film both have a (for arguments sake, I'm too lazy to do math right now) 75-degree field of view.
It will say on the lens something like 5-60mm, 1:2.8-3.4.
Yes, the f6.3-60mm is the focal length of your lens. The second half of that is the max aperture range. at 6.3mm it can use a 2.8 aperture. at 60mm it can use a 3.4. Now it gets even trickier. Your camera has a small sensor. So a camera that has a bigger sensor has a different mm size (focal length) but is the same lens. The 6.3 on your camera is 18mm on a small DSLR and 28mm on a large DSLR and 37mm, 42 and 50mm on even larger cameras. It's all about field of view. You are not seeing further with a lens, you are seeing tighter. A 6.3 lens on a 4mm sensor and 52mm lens on a 6"x7" sheet film both have a (for arguments sake, I'm too lazy to do math right now) 75-degree field of view.
DSLR camera lens question (kit lens-zoom lens)?
Daniel Liu
I have a Nikon D5100, I have a kit lens (18-55mm) and a 55mm lens
I'm planning to sell my kit lens (18-55mm) and get a zoom lens.
either a 55-200mm or a 70-300mm, can these zoom lens do everything a kit lens do and better?
Which lens is better? 55-200mm or 70-300mm, thank you
Answer
Your 18-55mm lens IS a zoom lens. It allows you to get more coverage in tight places since 18mm is a wide angle. Obviously 55mm or 70mm are both short telephotos and not well suited for use in tight places such as an average sized living room. Both the 55-200mm and 70-300mm zooms are budget-priced and perform about the same as the 18-55mm lens you have. If you're serious about upgrading your lens selection save your money for the 70-200mm f2.8 zoom. It is an excellent performer and well worth the extra money.
Your 18-55mm lens IS a zoom lens. It allows you to get more coverage in tight places since 18mm is a wide angle. Obviously 55mm or 70mm are both short telephotos and not well suited for use in tight places such as an average sized living room. Both the 55-200mm and 70-300mm zooms are budget-priced and perform about the same as the 18-55mm lens you have. If you're serious about upgrading your lens selection save your money for the 70-200mm f2.8 zoom. It is an excellent performer and well worth the extra money.
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