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What’s the relationship between dot pitch of screen or monitor and digital magnification?
Published:2014-04-22 15:52:13    Text Size:【BIG】【MEDIUM】【SMALL

Notice: Monitor manufacturers used the term "dot pitch" to measure the size of pixel.

We use our 1.3MP and 2.5X objective model MDA1300 USB portable microscope to capture images in resolution of 1280*1024, and we display the image on screen at top display resolution setting, when we finish this table.

The commonly used dot pitches for different monitors and the related digital magnifications and the total magnifications.

Screen Resolution

Screen size

(inch)

Pixel size /Dot pitch

(mm)

Digital magnification

(times)

Total magnification

(times)

1024×768

9.7

0.192

68.6

171.4

15

0.297

106.1

265.2

17

0.337

120.4

300.9

1280×768

15.4

0.262

93.6

233.9

1280×800

12.1

0.204

72.9

182.1

13.3

0.224

80

200

14.1

0.237

84.6

211.6

15.4

0.259

92.5

231.3

17

0.286

102.1

255.4

1280×1024

17

0.264

94.3

235.7

18.1

0.280

100

250

19

0.294

105

262.5

1600×1200

15

0.191

68.2

170.5

20.1

0.255

91.1

227.7

21.3

0.270

96.4

241.1

We conclude that the bigger dot pitch monitor offers bigger digital magnification to the same USB microscope.



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