BetterPhoto Q&A: How to Use Camera Lenses and Focus

Ever wonder how to use camera lenses? Wondering which lens is right for you? Look no further than this Q & A discussion.

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  47 Questions
Replies
Last Activity
 
  How to Blur the Background
I am really wanting to shoot something with a blurred background. I've seen others do it, and it looks really neat. I thought I read my manual on "how to," but whatever it was I did was not ri...
29
March 12, 2007
 
  Focus?
How do you make it so one part of the photo is in focus (such as a flower) then have the background (a tree for instance) blury, and also what does aperture do?...
1
December 28, 2003
 
  Prefocusing
Anyone willing to explain to me how to prefocus? Are some photographers able to estimate a distance, set the lens to that distance, then go according to the depth of field for a sharp image? Reas...
4
November 30, 2003
 
  How Much Vibrations Affects Blurred
The mirror of my Canon AE1 makes a sort of “clang” when the shutter is released, producing a slight, almost imperceptible vibration of the body. I’m a bit worried as that could produce a slig...
3
September 24, 2003
 
  Relation Between Magnification and Lenses
Which is the relation between the zoom in the cameras (3x, 4x...) and the mm in the lenses? For example, how much magnification is the 300mm lens?...
3
September 08, 2003
 
  Hyperfocal Points and Lens Focus Scales
Hi, All:I have one last question regarding hyperfocal distance. :)If I am using a focal length such as 60mm, the hyperfocal point is over 20', and the lens focus scale stops at 15' then goe...
2
August 11, 2001
 
  Best Zoom Range for Sharp Pictures
I shoot with a Canon Elan IIe and the 28-135mm USM IS lens. I have noticed that some pict...
3
September 14, 2001