k_udhayan
Hi. I have two questions about DSLRs..
1. I am planning to buy a DSLR camera. Since I am new, when the lens says for a focal length of 18-55 mm, how close and far away objects from the camera can be focused sharply?
2. My point an shoot camera has got an optical zoom capacity of 15X. But DSLR lenses have comparatively a very low zoom / magnification range. I thought because DSLR are more expensive I would get magnification higher than point and shoot cameras. What am I missing to understand here.
Pl. help. Thanks in advance.
Answer
What you are missing is that the cost of making lenses for dSLR cameras is up to 100 times more than those found on P&S cameras. Since photographers only buy the lenses they need for their dSLR cameras, they do NOT lenses with extreme zoom ratios.
P&S cameras, on the other hand, have a fixed lens, so some have an extreme optical zoom range because there is no way for the user to change lenses.
The size of the sensor of a dSLR is only one reason the interchangeable lenses cost so much more.
Look at the different sensor sizes.
http://cameraimagesensor.com/size/#42,27,24,a
The 18-55 mm lens is perfect for learning how to use a dSLR. It provides angles of view needed to shoot landscapes, group shots, full body shots and head and shoulder portraits.
There are a few long reach zooms like the 18-200 mm or new 18-300 mm zoom
What you are missing is that the cost of making lenses for dSLR cameras is up to 100 times more than those found on P&S cameras. Since photographers only buy the lenses they need for their dSLR cameras, they do NOT lenses with extreme zoom ratios.
P&S cameras, on the other hand, have a fixed lens, so some have an extreme optical zoom range because there is no way for the user to change lenses.
The size of the sensor of a dSLR is only one reason the interchangeable lenses cost so much more.
Look at the different sensor sizes.
http://cameraimagesensor.com/size/#42,27,24,a
The 18-55 mm lens is perfect for learning how to use a dSLR. It provides angles of view needed to shoot landscapes, group shots, full body shots and head and shoulder portraits.
There are a few long reach zooms like the 18-200 mm or new 18-300 mm zoom
what the zooming capacity for a 18-55 mm dslr camera lenses?
suresh
i mean the optical zooming capacity? What is the closest thing it can focus?
Answer
The zoom capacity (a term usually used in compact p&s cameras) is 3x as 3 x 18mm = 54mm. As for closest focus, this is the information for the Nikon 18-55mm. Other brands may be similar.
Close Focus: 11" (0.28m) from the back of the camera. This is 4.5" (11.5cm) from the front of the lens.
http://www.kenrockwell.com/nikon/18-55-ii.htm
The zoom capacity (a term usually used in compact p&s cameras) is 3x as 3 x 18mm = 54mm. As for closest focus, this is the information for the Nikon 18-55mm. Other brands may be similar.
Close Focus: 11" (0.28m) from the back of the camera. This is 4.5" (11.5cm) from the front of the lens.
http://www.kenrockwell.com/nikon/18-55-ii.htm
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