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    Re: Lens coating removal question

    I think he probably said "Cerium Oxide" which is a fairly common fine grit polishing compound. Check amazon here: https://www.amazon.com/Cerium-Glass-Polish-Mineral-Remover/dp/B004QJN98Q
  2. Re: Using a 4K monochrome display as a digital negative

    I believe these are used in low-end photopolymer 3D printing (Stereolithography) with a UV source below, and a tank of polymer above (with platform and lift mechanics). That would imply that it both...
  3. Using a 4K monochrome display as a digital negative

    I've been reading the Film to Digital Scanning debate for some time with interest. I ran across this thread on the hackaday site. The author's site (with more detail) is here. The project is using a...
  4. Re: Any thoughts on why my film washer is not working?

    Interesting... Pretty simple. I've used a pipette washer that functions the same way. It's a simple siphon- no valves involved. What confuses me is that the water level actually rises -above- the...
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    Re: Building a simple 4x5 scanner back.

    Does he actually need the ground glass? I know almost nothing about the subject, but can't you scan the aerial image?
  6. Re: Black Masking Tape

    Shurtape P-672 Professional Grade Gaffers Tape from here.
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    Re: safe haven for tiny formats

    198105
    Skylight, Milwaukee Art Museum
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    Re: Jobo CPP2 Motor Malfunction

    To measure resistance for shorts, etc. get yourself a cheap DVM (digital volt meter). It'll cost you $10 (or more) and will measure voltage, resistance and current among other things. To check the...
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    Re: Jobo CPP2 Motor Malfunction

    They probably said "DC Rectifier". These would be a couple (or 4, depending on the transformer wiring) of diodes (or a single package of diodes) that rectify the AC from the transformer into DC for...
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    Re: Heading to Vermont soon...

    Thanks to everyone who contributed suggestions! We hit Texas (why Texas?) falls, both Moss Glen falls, Sterling Gorge falls, had lunch at Doc Ponds (4th anniversary party underway), hiked some of the...
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    Heading to Vermont soon...

    I'm going to be in mid-Vermont (the Waterbury/Stowe area) for several days next week and would appreciate any don't/can't miss sights, trails, waterfalls, museums, eateries, etc. suggestions.
    I've...
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    Re: ROLL CALL

    Yo...
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    Re: Off to Iceland in a week

    Peter,

    Thanks! A great book. I bought it, and it's inspired me to pack my Boggs (high rubber boots)... Apparently a lot of the shots require standing in or near water, salt or fresh.
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    Re: Off to Iceland in a week

    Thanks Emmanuel!

    All great suggestions and information. I'm well prepared (or resigned), both mentally and clothing-wise for the weather. Some protection for the cameras too. Had hoped to see...
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    Off to Iceland in a week

    I'm off to Iceland at the end of the month for a week of photography. I'll be staying near Vik, on the southern coast. It promises to be an interesting (and wet!) visit and I will probably be seeing...
  16. Re: Salt Lake City/ Park City recommendations...

    A follow up...

    Arrived in Salt Lake City- the smoke layer below 10,000 feet from (I assume) California wildfires was like that of a cheap pool hall in the early 1960's... Somewhat better in Park...
  17. Salt Lake City/ Park City recommendations...

    Hi All,
    I'm going to be in the Park City, Utah area (with a car) for the next 4 days or so. Do you have any recommendations for day trips to "don't miss" locations? I'm mostly interested in...
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    Re: Whidby Island visit

    Thank you all so much for the information and advice. I'll be taking my 'tiny' camera- the logistics involved with taking my 4x5 are intimidating... Port Townsend on foot is a possibility, as well as...
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    Whidby Island visit

    I'll be visiting Whidby Island, Washington towards the end of March for a couple of days. I've never been in that particular part of the country before. What are the photographic possibilities in the...
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    Re: Another DIY Rotary Controller

    Make sure you use a GFI outlet to minimize chance of 'concerning' events.
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    Re: Rear Tilt - What am I Doing Wrong?

    Regarding the images you linked to, you're right in that "get-low-and-close-with-a-wide-lens" was used. You can see that the perspective has changed by looking at the relative position of the grasses...
  22. Re: A-little-history-on-infrared-flash-photography/

    I own a cheap I/R flash trigger that fits on my 35mm camera. It's essentially a (cheap) strobe with a built-in infrared filter that can optically trigger studio strobes without biasing the exposure....
  23. Re: Best LED Tactical Flashlight for photography? Suggestions/expeiences?

    Those are boost supplies rated for 150 watts (optimistically). You put in 12V or more and can get a steady 32 volts out. See here. The lenses are available here. You will need a heat sink for the LED.
  24. Re: How do you deal with snow / inclement weather?

    I have pretty good luck with the mitten/fingerless gloves that hunters and fly fishermen use. When you don't need the dexterity you can flip the mitten part over your fingertips to keep them...
  25. Re: What's happened with moderators since my last 2007 presence here?

    Nobody expects the Spanish Inquisition! "Hm! She is made of harder stuff! Cardinal Fang! Fetch...THE COMFY CHAIR!"
  26. Thread: Hi

    by Robert Tilden
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    Re: Hi

    Well, -THAT- should give him a taste of the LFPF dynamic!
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    Re: Bride dies at "trash the dress" shoot

    Ok, the science geek in me has to vent... The dress doesn't weigh any more in the water than it does out of the water (same for Esther Williams' killer bathing suit). Now, getting out of the water...
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    Re: Expanding my WiFi

    Netgear WN2000RPT works for me...
  29. Re: I've been searching for year for an answer to this question.

    The first picture is of a glassblower and is by Lewis Hine... A paragraph on answers.com states:

    "Hine did his work initially with a 5x7 view camera with rapid rectilinear lens, using a magnesium...
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    Re: Question for headless photographers

    Gives me an idea for a product- an audio output level that nulls out when the bubble is centered, and gives a tone proportional to how off-center the bubble is (no actual bubble used). Should be...
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    Re: Dead slow response times

    No trouble from Chicago with Firefox...
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    Re: Cheap Tripod Bag

    Like you suggest, I've started using the bag that one of those cheapo folding chairs come in. I think I got the chair as a giveaway somewhere, so the bag was essentially free.
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    Re: Transporting 8X10 gear

    Seems like a repurposed golf hand-cart might do the trick. They are often available used, are light, and fold up. Some have seats attached. You'd need to do some modification depending on your load...
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    Re: Thawing Sheet Film (again)

    I don't know that much about how fast film degrades at room temperature- I'd say pretty slowly- but seems to me that you take the film out of the freezer the night before, load your holders the next...
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    Re: Louis Daguerre's 224th birthday

    "Oddly, November 18 is also my birthday, although I am only a fifth of his age"

    Don't worry, in another few hundred years you'll be half his age :-)
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    Re: PERSPECTIVE "distortion"

    So... The bulgey flat wall thing. Wouldn't a pinhole image of the wall settle the question of whether the magnification/perspective cancels out?
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    Mottled spots on film

    Is it possible that you had some oil or other contaminant on your finger(s)? The description sounds sort of like a fingerprint's -er- footprint.
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