> The concentration involved is no different than setting a leaf on fire with a magnifying glass on a regular day.
That's what they're saying. Zooming in on the sun vs the sun happening to be in-frame.
That's what they're saying. Zooming in on the sun vs the sun happening to be in-frame.
Wouldn't zooming in spread the sun's energy across more of the sensor? Same energy, larger area = less intensity.
Put differently, longer lenses typically also have bigger absolute apertures, collecting incident light from a larger cross-section. This compensates for the fact that a given solid angle of incident light is spread over a larger area of the sensor.