. The Canadian field-naturalist. 448 The Canadian Field-Naturalist Vol. 94 Table 1—Exposure values with 100-mm f/4 Bellows-Takumar lens set at f/22 Bellows extension (mm) Exposure Flash Camera-to-subject factor setting distance Magnification X (mm) (mm) 180 1200 80 880 25 745 25 510 40 450 65 410 90 390 105 375 120 367 135 367 150 165 370 180 375 50 60 70 80 90 100 110 120 130 140 150 160 170. Figure 1. The complete close-up appartus showing the gunstock and flash arrangeme
. The Canadian field-naturalist. 448 The Canadian Field-Naturalist Vol. 94 Table 1—Exposure values with 100-mm f/4 Bellows-Takumar lens set at f/22 Bellows extension (mm) Exposure Flash Camera-to-subject factor setting distance Magnification X (mm) (mm) 180 1200 80 880 25 745 25 510 40 450 65 410 90 390 105 375 120 367 135 367 150 165 370 180 375 50 60 70 80 90 100 110 120 130 140 150 160 170. Figure 1. The complete close-up appartus showing the gunstock and flash arrangement. Note that the L-bracket holding the Strobonar 782and the camera/bellows are fastened to the main gunstock by bolts and wing nuts for ease of assembly and, thus, portability. J. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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