Digital SLR Lens Focal Length Calculator online

Archived from groups: rec.photo.digital.slr-systems (More info?)

In article <opsofnjmeq4g2lz4@localhost>,
Paul V <transmitnm@earthlink.net> wrote:
>I just created an online calculator for calculating the focal length of
>35mm lens when mounted to digital camera bodies. You can check it out here:
>
>http://www.noendpress.com/pvachier/cameras/index.php
>
>Enjoy!


Good grief! Quite apart from the fact that the focal length doesn't change,
do people *really* need help to perform multiplication by 1.5? (which is
going to be close enough for all those 1.5 & 1.6 crop factor cameras).

Archived from groups: rec.photo.digital.slr-systems (More info?)

Paul V wrote:

> I just created an online calculator for calculating the focal length of
> 35mm lens when mounted to digital camera bodies. You can check it out here:

Here's the equation. FLj = FLi

Where Flj is the flocal lenght on a digital camera and FLi is the focal
lenght on a 35mm camera. Incredicbly this equation works REGARDLESS of
crop factor through the MAGIC of HIGH LEVEL mathematics.


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Archived from groups: rec.photo.digital.slr-systems (More info?)

On Wed, 30 Mar 2005 09:05:07 -0500, Alan Browne
<alan.browne@freelunchVideotron.ca> wrote:

>Paul V wrote:
>
>> I just created an online calculator for calculating the focal length of
>> 35mm lens when mounted to digital camera bodies. You can check it out here:
>
>Here's the equation. FLj = FLi
>
>Where Flj is the flocal lenght on a digital camera and FLi is the focal
>lenght on a 35mm camera. Incredicbly this equation works REGARDLESS of
>crop factor through the MAGIC of HIGH LEVEL mathematics.

But does it still work if I use a flash?

:->

--
Owamanga!
http://www.pbase.com/owamanga

Archived from groups: rec.photo.digital.slr-systems (More info?)

> My...how useful...

Obviously if you're only looking at one lens and a 1.5 crop factor, this
doesn't offer much time savings. But If you looking at lots of different
lenses, primes and zooms, on different cameras (1.3x, 1.5x, 1.6x, etc.) it
can save a lot of time. The page is intendend for camera COMPARISONS and
to help people in making hypothetical buying desicions between lenses and
different camera systems. Those who use if for such will find it pretty
handy.

--
my digital slr blog: http://digitalslr.blogspot.com