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1.1 root 1: .TH QSNAP 1 "pipe"
2: .CT 1 filmprinter graphics
3: .SH NAME
4: qsnap \(mi high resolution digital film printer
5: .SH SYNOPSIS
6: .B qsnap
7: [
8: .BI -bfmrxRXY
9: ]
10: [
11: .I N ...
12: ]
13: .I file
14: .SH DESCRIPTION
15: .I Qsnap
16: produces images on a QCR digital film printer.
17: The input
18: .I file
19: should be in the form of
20: .IR picfile (5),
21: 3-channel for color or 1-channel for black and white.
22: .LP
23: Option letters appear in one string.
24: Certain options require a numeric argument,
25: .I N,
26: which follows the string as a separate argument.
27: .TP
28: .B b N
29: Set the brightness of the image to
30: .I N,
31: .RI 0\(<= N \(<=8;
32: 0 is brightest.
33: The default brightness value is 2 in
34: high resolution mode (4K\(mu4K pixels), and 0 in
35: low resolution mode (2K\(mu2K pixels) as set by option
36: .BR R .
37: .TP
38: .B f N
39: Correct the exposure for a given type of film.
40: Valid film types are: 7, 8, and 0 to 5 inclusive.
41: .br
42: 0 = (default) Polaroid Type 52 (4\(mu5 inch).
43: .br
44: 1 = linear correction table.
45: .br
46: 2 = Polaroid Type 559 color pack film (4\(mu5 inch), 2K mode.
47: .br
48: 3 = Ektachrome 100 color film (35mm), 2K mode.
49: .br
50: 4 = Ektachrome 100 color film (35mm), 4K mode.
51: .br
52: 5 = Polaroid Type 559 color pack film (4\(mu5 inch), 4K mode.
53: .br
54: 7 = Polaroid Type 809 color film (8\(mu10 inch), 4K mode.
55: .br
56: 8 = Tmax-100 black&white film (35mm), 2K or 4K mode.
57: .TP
58: .B m N
59: Set the enlargement factor.
60: The image is enlarged with a simple box filter.
61: Default values are
62: .IR N =3
63: for 2K resolution and
64: .IR N =6
65: for 4K.
66: .TP
67: .B r
68: Expose the red channel of a color image only (for multiple
69: red overlays).
70: .TP
71: .B x N
72: Expose the image N times.
73: (Useful if the maximum brightness value is not bright enough.)
74: .TP
75: .B R N
76: Set the resolution, where
77: .I N
78: is either 2 or 4, to select low (2K\(mu2K) or high (4K\(mu4K) resolution,
79: respectively.
80: The default it to leave the resolution unchanged.
81: .TP
82: .B X N
83: Offset the image along the x-coordinate by N pixels.
84: The 35mm camera in 4K mode may require an X- and/or a Y-offset.
85: The offset in each direction is multiplied by the enlargement factor.
86: .TP
87: .B Y N
88: Offset the image along the y-coordinate by N pixels.
89: .LP
90: The imaging resolution for 35mm film is 114 pixels/mm (2895 dots/inch)
91: in high resolution mode, and 57 pixels/mm in low resolution mode.
92: The maximum size image that fits a 35mm negative is 3840x3072 pixels.
93: It takes about 2 minutes to render such an image in black and white,
94: or 6 minutes in color.
95: Since the color film is usually less sensitive to red, it is good
96: practice to expose the red channel of a color image twice, using
97: option
98: .BR r .
99: Kodak Ektachrome color film, 100 ASA, or
100: Kodak Tmax-100 black and white film are recommended.
101: For 100 ASA film, imaging at brightness level 2 produces
102: the best results.
103: .LP
104: With the 4\(mu5 inch module, the imaging resolution is 34 pixels/mm
105: (864 dots/inch) in high resolution mode, 17 pixels/mm in low resolution.
106: Polaroid Type 559 color film or Polaroid Type 52
107: black and white film is recommended.
108: .LP
109: With the 8\(mu10 inch module, the imaging resolution is 17 pixels/mm.
110: This module can only be used in high resolution mode.
111: Polaroid Type 809 color film is recommended.
112: .SH "SEE ALSO"
113: .IR pico (1),
114: .IR bcp (1),
115: .IR cscan (1),
116: .IR imscan (1),
117: .IR picfile (5)
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