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Full spectrum converted Canon RP

Started Oct 22, 2020 | Discussions thread
OP robgendreau Forum Pro • Posts: 10,917
Re: Full spectrum converted Canon RP

dmanthree wrote:

Morvegil wrote:

Someone explain what converting to full spectrum means

It means that there is no filter of any kind in front of the sensor, so the effect you get depends on the filter you place on the lens.

And to elaborate further, most all modern digital cameras come with UV and IR filters on the front of the sensors (some manufacturers make specialized cameras for astronomers and such without the filters, like Canon does with the Ra). These block UV and IR from reaching the sensor. Remove them, and the sensor now can "see" those wavelengths.

A full spectrum just removes the filters, and in the case of most mirrorless doesn't replace it with anything. Other conversions might add certain filters in place of the original, like passing only 720nm and above. Or sometimes just glass since esp with DSLRs than can affect focus.

The nice thing about full spectrum is you can use lens filters (either in front of the lens or behind it) to filter light; I used three different ones in the examples above. Or you can add a UV/IR cut filter; it cuts the same wavelengths as the original in-body filter, essentially giving you the original camera back.

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