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| p.1 #3 · Canon 10-22 for more than landscapes? |
Of course more than landscapes.
10-22 mm is a range of focal lengths. They are just focal lengths. That means that on the crop sensor they have a range of angles of view. If the angle of view you want is within the range, then you are good to go.
As far as interiors go, the 10-22 (16-35 equivalent to fullframe) on crop factor is plenty wide. 10 mm on crop and 16 mm on full-frame is definitely "ultra-wide".
For photos of people, the executive summary is that at the longer end (18 to 22 mm), the angle of view is good for full-body-length portraits of people. Wider than that, it is good for a full body view in a part of the frame, like Annie Leibovitz' interior portrait of QE II.
But, as always, these are guidelines, not rules. Break 'em when you feel like doing so, but think first and know what you are doing and why and what the effect of breaking the guideline will be. Or just experiment and play. Fun is always good if no reputations or client dollars are riding on it.
Perspective makes the distortion which is a big consideration, and perspective is entirely dependent on distance. For a given distance, you can use the zoom to take in a desired angle of view.
If you are one foot (12 inches, 30 cm) from a person's nose, the ears will be about 16 inches away or 35% further. Thus the nose will seem distorted and the ears bent back or hardly visible. It doesn't matter what the focal length is.
To get a pleasing perspective that we regard as "friendly", a distance of about 5 feet is good. Closer than that is "good friends" or "intimate". A distance of about 10 feet is viewed is "distant" or "cold", which is good for beauty and glamour because it is a kind of pedestalization.
So, at a distance of about 5 or six feet for good perspective, you then pick the focal length for the angle of view to show what you want to show. The classic focal length for a head and shoulders portrait is 50 mm on crop factor (85 on full frame). Use a longer focal length to show less and a wider focal length to show more. For a full-body shot, we often move back a little because that is the perspective we often see a whole body from.
So here are the classic focal lengths on crop factor for people (full-frame in parentheses):
14-18 (21-28) full body at side of frame not too close to camera
22 (35) full length body dominating the frame
35 (50) waist up
50 (85) head and shoulders
85 (135) head and cropped hair
135 (200) very tight in on just eyes nose mouth
For beauty use one step higher focal lengths.