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  1. pcrichmond
    Greetings stemked. Thanks again for your post on UV and digital, sorry if it got hijacked.
    A few items that didn't get mentioned:
    Custom white balance is critical, ptfe (white teflon) works well.
    Live view for focus & framing. Especially with the pinhole.
    Some speedlights emit UV if the plastic lenses are removed and bare bulb is exposed. Can help if needed. Care the light isn't pointed into anyhtings eyesight.

    Not sure why but my eyes start to hurt when working in LV and UV for extended periods of time. I don't see how any radiation can be transmitted via LV but wonder if our systems inherently know these bandwidths are hazardous and react accordingly when the visible spectrum is blocked out. Just a heads up for your student.

    Would love to hear how your students project progresses. A combined botany/physics lesson would be wonderful. Again, if you would like to use my converted K01, let me know - we could work something out.
    Best of luck with the project,
    Paul R.

About Me

  • About stemked
    United States
    Pentax Cameras
    K-3, K-5 IIs, K-7, K10D, Q7, Pentax Film SLRs
    Photographic Equipment
    bodies: K1000, ZX-5n,, MZ-S, Super Programs, LX, P30T, 6x7, ES, K10D
    Lenses: TMTC(~30 K and screw mount lenses, 3 6X7)
    Equipment: Full film equipment, some Digital
    About Me
    Moderator Pentax forum at
    Microbiology Professor
    30 year Pentax user
    Special Photography Interests: Nature and Scientific Photography


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  • Last Activity: 02-05-2019
  • Join Date: 02-19-2009
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  • Total Likes Received: 64

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stemked has received a total of 64 Likes | View All of stemked's Liked Posts | View Posts stemked Likes

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Nature Snow Geese storm Post Your Photos! reh321 7 317 01-02-2019 10:00 PM
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Recommendations for a QR Plate for Pentax FA 80-200mm f2.8 Pentax Camera and Field Accessories angerdan 8 511 11-27-2018 03:29 PM
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