Re: Focal length on digital

On 30 Oct 2005 15:19:54 -0600, David Dyer-Bennet wrote:

> People talk about the "focal-length multiplier" for digital SLRs --
> the Nikon models have a 1.5x multiplier, so your 50mm lens gives the
> same angle of view you'd get on a 35mm film camera with a 75mm lens.
> Some people will object strongly to the term "focal-length
> multiplier", and they're technically right, so to shut them up I often
> call it a "crop factor" instead.

It only works sometimes. There have been a few here that almost
belligerently insisted that terms such as "crop factor" were
mistaken and shouldn't be used. (I disagreed)


> And many of us get hives when we see people misunderstanding things,
> even when the misunderstanding makes no difference to what most
> photographers do day-to-day. Call us anal if you like :-).

Some of us can be anal. Others are real thing. :)

.

Relevant Pages

  • Re: Seeking lens advice
    ... If I had a 1.5X teleconverter and mounted on a 50mm lens on a 24x36mm film or dSLR I would have a 150mm lens. ... Bla bla bla. ... But what people want to know is how the CROP is going to affect the composition of the shot. ... What the manufacturers should call it is an 'effective focal view multiplier' ...
    (rec.photo.digital.slr-systems)
  • Re: MP question.
    ... The term "crop factor" is a misnomer, ... lens used on it the equivalent of a longer lens on a 35. ... descriptive term would be "focal length multiplier," since that's actually ... The multiplier varies somewhat between different makes of camera, ...
    (rec.photo.digital)
  • Re: Compact Camera equivalent focal len
    ... You divide the 35mm focal length by the crop factor to get the focal ... a cropped camera, ... Calling it a focal length multiplier is reasonable, ... If a 100mm lens on a dSLR gives the same field of view as a 150mm lens on a ...
    (rec.photo.digital)
  • Re: Compact Camera equivalent focal len
    ... It's NOT a fl multiplier. ... It's a crop factor. ... They won't have the same FINAL magnification, ... Make a full-frame print from a 35mm SLR with a 100mm lens, ...
    (rec.photo.digital)
  • Re: Compact Camera equivalent focal len
    ... the CORRECT USE of "prime lens" for a change), ... 12x18 sensor remains a 100mm f 4, it has a FOV and brightness ... why isn't it reasonable to call it a focal length MULTIPLIER? ...
    (rec.photo.digital)