Announced jointly with the D FA 100mm weather-sealed macro lens in 2009 . On Pentax APS-C cameras, the D FA * 70 200mm has an equivalent focal length range of 107 307mm.
22.
Note that because the mathematics of projective transforms depends on the angle of view, perspective tools require that the angle of view or 35 mm equivalent focal length be entered, though this can often be determined from Exif metadata.
23.
A typical example is the 24?Zoom Nikkor ED 4.6-110.4mm f2.8-5.0 on the Nikon Coolpix P90, which in 35 mm equivalent focal length terms is a 26-624mm.
24.
Out of the two, the FZ1000 has a much larger zoom range ( 16X ); the exact video mode and whether OIS is used determines the crop factor, here expressed as 35mm equivalent focal length for the inbuilt lens:
25.
For example, the Canon EF 50mm f / 1.8 II is the least expensive Canon lens, but when used on a 1.6?cropped sensor yields an 80mm equivalent focal length, which is at the wide end of portrait lenses.
26.
The EF 28 90mm, though having corresponding full-frame equivalent focal length, is an inexpensive kit lens and is not comparable to the 17 55mm, having slower aperture, a variable maximum aperture, lower image quality, and no image stabilization.
27.
For example, when talking about a 14 mm lens for a Four Thirds System camera, one would not only indicate that it had a focal length of 14 mm, but also that its " 35 mm equivalent focal length " is 28 mm.
28.
On the other hand, using a different lens with the same field of view as the non-cropped camera ( matching the 35 mm-equivalent focal length ), at same f-number, the smaller camera's depth of field is greater.
29.
The original version of the lens, the f / 3.5 5.6 IS, was introduced in 2009 with a suggested retail price of US $ 499.99 . The field of view has a 35 mm equivalent focal length of 29 216mm.
30.
Use of a 35 mm-equivalent focal length is particularly common with digital cameras, which often use sensors smaller than 35 mm film, and so require correspondingly shorter focal lengths to achieve a given angle of view, by a factor known as the crop factor.
