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

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    Pentax PF80 looooong distance recomendations

    Well, light loss is noticeable, but I'm still surprised that it works! When the zoom is at 8mm with the powermate it gives around 161x, and you can see eye-floaters, but it's not a surprise since the exit pupil in that case is less than 0.5mm. As it can be read in Televue's eye piece...
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    Pentax PF80 looooong distance recomendations

    In case it helps anyone, I've tested the Powermate 2.5x with the PF80ED-A and it works just fine! The chrome barrel doesn't go all the way in, but still I'm able to reach focus in all focal lengths using the Powermate with the smc PENTAX Zoom XL 8-24mm.
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    Pentax PF80 looooong distance recomendations

    Does it work in the PF80ED-A without any of the tweaks required for other barlows, or are those tweaks always necessary? Thanks! Pedro
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