FOV AND LENS RESOLVING POWER WITH NORMAL TO WIDE ANGLE LENSES
Since we have DLSR cameras with three or more sensor sizes there is no longer a 'standard' for a normal FOV focal length lens. The 20D 1.
FOV - Field of View - The area covered by the lens' angle of view. This is important to those with a digital SLR camera using lenses designed for 35mm film cameras.
FOV (rectilinear) = 2 * arctan (frame size/(focal length * 2))
Here "frame size" refers to the dimension of the frame in the direction of the FOV, so for 35mm (which is 24mm x 36mm), frame size is 36mm for the horizontal FOV, ...
Yes (2.0x FOV crop, 6.9 MP, 8 fps)
File formats
- RAW (compressed / uncompressed)
- JPEG (3 levels) ...
for appropriate sampling, a telescope delivering a PSF with an FWHM of 2 arcseconds calls for a CCD with pixels having a one-arcsecond FOV.) Less than this level of precision is termed undersampling. Significantly more is termed oversampling.
With a tiny sensor anything with a "normal" FOV will have infinite depth of field and that's what makes many of today's consumer images fail.
In fact, that's exactly what widening the FOV does, it pushes more content into the same space, so to undo it you needed to do your scaling/cropping! ...
ANGLE OF VIEW - Also known as the "Field of view," "FOV" and the "Angle of the field of view", it is the extent of the view taken in by a lens. The focal length of a lens, in conjunction with film size, determines the angle of view.
A 300mm lens on full frame or APSC produce the same magnification but APSC crops it. The effect is on the FOV. The FOV of 300mm on APSC is similar to using a 450mm on full frame but with eh magnification of 300mm only. That's my understanding.
only measures 180 degrees when measured from corner to corner: these have a 180° diagonal angle of view, while the horizontal and vertical angles of view will be smaller; for an equisolid angle-type 15 mm full-frame fisheye, the horizontal FOV will ...
Not to be confused with "Crop" of a picture, these terms are exclusively used in the context of relating focal length to field of view (FOV), using a full-frame sensor size (24x36mm) as a reference.
In regards to your comparison to a single image - unless you change the focal length, you're not getting greater pixel density, just a wider/taller picture. If you zoom in, and take enough brackets to get the same FOV as the single image, ...
- not really "wide angle" on my 30D or your Rebel 350D. The 1.6 FOV factor makes it equivalent to a 45-480mm lens. If you're talking about the 18-200mm, that's equivalent to 29-320mm, so that lens is "wide angle." ...
 See also: Image, Sensor, Camera, Digital, Mm
  
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