best camera lens for long distance image
RR
I'm looking for a lens that can capture a long distance but isn't too big or heavy.
Thanks.
Answer
I'm not a Canon user, so I can't name specific lenses, but it sounds like you could use a visual aid to help you know what lens reaches how far.
Here is a mini-tutorial I made myself to compare focal lengths. This is NOT a lens test or a camera test! It is merely intended to show the difference between various focal lengths. The lens was the Nikon 18-200 VR lens, which is (by definition) an 11X lens, but that 11X does not tell you what the final image will look like. I added one more frame taken with a 300 mm lens. The camera was a Nikon D200 so there is a 1.5X "crop factor," "lens factor," or "focal length multiplier." Your XTi will have a crop factor of 1.6X, so the tutorial will be valid for you as well, since that's pretty close to the same thing. There is further explanation on the image itself. It would help if you click on "All Sizes" above the image.
http://www.flickr.com/photos/7189769@N04/476181737/
This was done with two different lenses: the Nikon 17-55 and 70-300:
http://www.flickr.com/photos/samfeinstein/1245831147/
I'm not a Canon user, so I can't name specific lenses, but it sounds like you could use a visual aid to help you know what lens reaches how far.
Here is a mini-tutorial I made myself to compare focal lengths. This is NOT a lens test or a camera test! It is merely intended to show the difference between various focal lengths. The lens was the Nikon 18-200 VR lens, which is (by definition) an 11X lens, but that 11X does not tell you what the final image will look like. I added one more frame taken with a 300 mm lens. The camera was a Nikon D200 so there is a 1.5X "crop factor," "lens factor," or "focal length multiplier." Your XTi will have a crop factor of 1.6X, so the tutorial will be valid for you as well, since that's pretty close to the same thing. There is further explanation on the image itself. It would help if you click on "All Sizes" above the image.
http://www.flickr.com/photos/7189769@N04/476181737/
This was done with two different lenses: the Nikon 17-55 and 70-300:
http://www.flickr.com/photos/samfeinstein/1245831147/
What does the space station camera look like?
jarcher8
Just viewed some pictures of Earth shot from the space station in orbit. Kind of doubt they are using standard cameras to take such beautifully detailed long distance beautiful picture's, and was just wondering what a "space camera" looks like.
Thanks for any and all replies!
Answer
The use standard cameras, half of them use film, and half are digital. But these are full professional grade, around $8,000 (and up) cameras, with the filters and lens for taking the pictures. They are checked, calibrated, adjusted and cleaned very carefully before being taken up. The modifications, if any, for space use are pretty minimal -- painted black in order to minimize reflections, larger shutter button for use with gloves, data imprinting on each frame (time, picture number, camera settings).
There are at least 9 high quality cameras used, including:
Nikon D2Xs
Nikon D3X
Kodak DCS460
Kodak DCS760
Maurer (w/ Xenotar 80mm f/2.8 lens)
... and a few others.
The use standard cameras, half of them use film, and half are digital. But these are full professional grade, around $8,000 (and up) cameras, with the filters and lens for taking the pictures. They are checked, calibrated, adjusted and cleaned very carefully before being taken up. The modifications, if any, for space use are pretty minimal -- painted black in order to minimize reflections, larger shutter button for use with gloves, data imprinting on each frame (time, picture number, camera settings).
There are at least 9 high quality cameras used, including:
Nikon D2Xs
Nikon D3X
Kodak DCS460
Kodak DCS760
Maurer (w/ Xenotar 80mm f/2.8 lens)
... and a few others.
Powered by Yahoo! Answers
No comments:
Post a Comment