Jump to content

Search the Community

Showing results for tags 'infrared filters'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Leica Forum

  • International User Forum
    • Leica M System
    • Leica L-Mount
    • Leica Q3 / Leica Q2 / Leica Q
    • Leica X
    • Leica D-Lux / Digilux / V-Lux / C-Lux
    • Leica R System
    • Leica S System
    • Leica FOTOS App
    • Leica Collectors & Historica
    • Photo Forum
    • Leica & General Discussions
    • Leica Forum Discussions
    • LSI Member Forum
    • Events & Member Meetings
  • Deutsches Leica Forum
    • Leica M-System
    • Leica L-Mount
    • Leica Q3 / Leica Q2 / Leica Q
    • Leica X
    • Leica D-Lux / Digilux / V-Lux / C-Lux
    • Leica R System
    • Leica S System
    • Leica FOTOS App
    • Leica Sammler & Historica
    • Foto-Forum
    • Leica & Allgemeine Diskussionen
    • Leica Forum Diskussionen
  • Challenges / Wettbewerbe
    • Digi - Lux Challenge
    • Leica X Challenge
    • Leica Mini Challenge
    • Leica One Challenge
    • Barnack Challenge

Calendars

  • Community Calendar

Categories

  • Leica M Objektive

Categories

  • Leica Q
  • Leica M (Typ 240)
  • Leica SL (Typ 601)

Categories

  • Leica Q
  • Leica M (Typ 240)
  • Leica M Monochrom (Typ 246)
  • Leica SL (Typ 601)

Product Groups

  • Premium

Categories

  • Leica M
    • Leica M Cameras
    • Leica M Lenses
    • Leica M Accessories
    • Leica M Wanted
  • Leica L-Mount
  • Leica S System
  • Leica Q
  • Leica X
  • Leica D-LUX / V-LUX / DIGILUX
  • Historica
    • Leica R System
    • Screwmount Leica
  • Misc

Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


AIM


MSN


Website URL


ICQ


Yahoo


Jabber


Skype


Member Title


Location


Interests


City


Hobbies


Job


Name


Your Leica Products / Deine Leica Produkte


Website


PLZ

Found 2 results

  1. If someone would have Leitz price lists of 1933, I would like to know when the IR filter FIKYB appeared for the first time. In English price lists that would be March 1933. So I am curious if also German (and perhaps other language) price lists mention the infrared filter at that moment. Lex
  2. I wanted to see how well (or poorly) my TL2 could be coaxed into producing infrared or near-infrared photographs. So I started this informational topic to pass along some of what I found out. I used infrared film only very occasionally during my predominantly film days, but there were times when it was just the ticket. One of my favorite B&W films was and still is Ilford's near-infrared SFX-200 processed in PMK Pyro, both for normal and occasionally for near-infrared photos (but that's another story). It turns out that the TL2's sensor collects an impressive amount of infrared light. (Simple test: try viewing the business end of an IR TV remote through the camera. If you can see the IR diode--I assume it's a diode--light up when pressed, then you've got something to work with.) The TL2 shows the diode very well. So did the X2, but the X2 didn't fare nearly so well once I tried using it with IR filters. The exposure times were way too long. Getting the TL2 converted to Infrared is an option, and one that will preserve exposure times we are more used to. Filters, as you all know, slow exposure times down. But if you only use IR occasionally, as I do, IR conversion of the camera isn't a desirable option. So I experimented with filters, and the results are as follows: I used three filters on the TL2 in various types of scenes. The three filters were--in order of ascending visible light filtration--first, the B+W 092 (which Schneider says "...blocks visible light up to 650 nm, and at just below 700 nm it allows 50% to pass through .... From from 730nm to 2,000 nm the transmittance is very high at over 90%"). The second (perhaps the Goldilocks filter) was the HOYA R72 Infrared, which is designed to pass 95% of the light between 760nm and 860nm. The third, and darkest, filter was the B+W 093 which . . . well, I'll let them tell it: "blocks the entire visible light spectrum. It therefore appears black and in contrast to the B+W 092 infrared filter 695, it enables shots in pure infrared without the visible red. The transmittance does not exceed 1% until 800nm, but increases to 88% at 900nm." I'll put results in subsequent posts.
×
×
  • Create New...