Chapter 7 Tips on Photographing54PhotographingBasics of DS-L37.3 Calculating the Display Magnification for Microscopic ObservationPixel sizes of image pickup device on DS camera headsThe table below shows the pixel size (the maximum number of pixels stored) of image pickup device and theeffective area (area for the effective number of pixels stored) of each DS camera head.Pixel size (μm) Recorded pixel count Effective area (mm)DS camera head Width Height Width Height Width Height DiagonalDS-Fi2/Fi1/Fi1c 3.4 3.4 2560 1920 8.7 6.53 10.88DS-Vi1 4.4 4.4 1600 1200 7.04 5.28 8.8DS-Qi1Mc/Ri1 6.45 6.45 1280 1024 8.26 6.6 10.57Use the following formula for calculating the magnification of the subject on the monitor.• Magnification on the monitorOptical magnification (objective lens magnification X relay lens magnification)X Diagonal size of monitor displayDiagonal size of effective area for image pickup deviceCalculation example: built-in monitor (8.4 inch, diagonal: 213 mm)DS camera head Magnification of opticaldevice (example) Magnification of the subject on the monitorDS-Fi2/Fi1/Fi1c Objective lens: 40xRelay lens: 0.7x 40 x 0.7 x 213 mm / 10.88 mm = Approx. 550DS-Vi1 Objective lens: 40xRelay lens: 0.55x 40 x 0.55 x 213 mm / 8.8 mm = Approx. 530DS-Qi1Mc/Ri1 Objective lens: 40xRelay lens: 0.7x 40 x 0.7 x 213 mm / 10.57 mm = Approx. 560Magnification when printedSee “15.3.4 Calculating the Magnification When Printed” for details.
