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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. N

    New but probably wrong insight about lowlight

    „I don't understand from where you get the idea that higher magnification concentrates the incoming light more.“ Hi, you said it yourself, just with other words: „The objective gathers the light and the gathered light is proportional to the area of the objective.“ So the light gathered is the...
  2. N

    New but probably wrong insight about lowlight

    Let‘s assume two binoculars of the same quality: 8x42 10x42 The 10x is only 20% dimmer and gives 25% more detail, as long as your eye pupil did not exceed 4.2mm. Because of higher magnification the 10x is 56.25% dimmer as the 8x (quadratic effect), BUT the 10x concentrates the same incoming...
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