Neutral Density Filters, trans to ND conversion

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ND filter sets for Fluorescence

What are ND Filters?

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Neutral Density Filters

Neutral density filters uniformly attenuate the intensity of light over a broad spectral range. Attenuation is accomplished by using either a light-absorbing glass or a thin-film metal coating that combines absorption and reflection.

Neutral density (ND) filters attenuate spectral regions selected from 250 to 2,500 nm. The level of attenuation can be specified from optical density 0.04 to 4.0.

They are available in the following standard sizes:
18, 25, 32, 45 and 50mm diameter and 50x50mm square

Filter

ND

Trans

XB193

0.05

89%

XB13

0.1

79%

XB194

0.2

63%

XB14

0.3

50%

XB195

0.4

40%

XB15

0.5

31.5%

XB196

0.6

25%

XB197

0.7

20%

XB198

0.8

16%

XB16

1.0

10%

XB17

2.0

1%

XB27

3.0

0.1%

XB28

Set of 6 ND Filters

NA

XB199

Set of 12 ND Filters

NA

XB28 Set comprises 1 off of XB13, XB0.3, XB0.5, XB1.0, XB2.0 and XB27.