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    Re: X-Rite 320 densitometer

    It sounds like I'll need to find a new (used) densitometer if I want to continue to make reflectance measurements. Response from X-Rite today:

    "The 320 has been out of production for over 15...
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    Re: X-Rite 320 densitometer

    I sent an email to X-Rite earlier today: Manual availability? Do they do repairs or sell parts? Do they sell re-furbished units? I'll share their response if and when I receive one. There must...
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    X-Rite 320 densitometer

    My X-Rite 320, labeled "Konica Nice Print System", is no longer making reflectance measurements. The bulb is still good but the displayed reflectance values are very wrong and there's an unpleasant...
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    D-76 1:3 vs. HC-110 B

    HP5 in D-76 1:3 was my standard combo for several years. I have no experience with HC-110 but I'd call D-76 1:3 high acutance. If memory serves, normal developing time was about 11 minutes for...
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    EV units: Luna Pro-S vs Pentax spot

    This makes sense. I had the Luna Pro set for EI 400. I just did a back-of-the-envelope calc:

    EV = log2[ (f-number)^2/shutter speed ]

    based on some info I found on the web. Based on my...
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    EV units: Luna Pro-S vs Pentax spot

    I bought a Luna Pro-S a few months but didn't get around to working with it until today. Something I don't understand when comparing it with my Pentax spot... I tak e an EV reading off a gray card...
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    Gossen Luna Pro recalibration

    I picked up a Luna Pro on eBay the other week. Its in excellent condition cosmeticly but I think its out of calibration by 3-4 stops. Any recommendations for where I could get the calibration...
  8. Will recoating a lens degrade its performance?

    It is possible to recoat a lens without degrading its performance but the procedure is not risk free, even when the outfit doing the job is good at what they do - removing the coating can change...
  9. Ozone Generating Air Cleaners and Inkjet Prints

    >Or are these gizmos putting out very little of the type of ozone that can cause a reaction in the inkjet prints?

    Ozone is ozone. There's only one type.

    >I'm not a chemist, nor do I know how...
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    10 stop ND instead of IR filter

    I just checked the Edmund Instrustrial Optics website. The ND filters I found were specified for 400-700 nm. You could try contacting them and asking for a plot of transmission vs wavelength too. ...
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    Lens Design/Theory Book

    FYI, I ordered "A History of the Photographic Lens" from Amazon in mid-January. I'm still waiting on it. I've been receiving a "Your order has been delayed." message pretty much every week for the...
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    ROLL CALL

    I check most days - several times a day when there's a thread of particular interest.
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    Speaking of Caponigro...

    >"While in Ireland, Paul came across a herd of over 30 stark white deer...

    Kind of an interesting in the context of his still lives - trying to set up a dynamic scene vs constructing a static one....
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    Speaking of Caponigro...

    >I also was kind of let-down when I leanred that his most famous photograph, the white running deer, was actually a set up situation.

    Where did you hear that story?
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    Josef Sudek exhibit

    >be sure to get a good wiff of the big black panel of rotting flies in the hirst exhibition

    Ha! Yeah, the first thing that struck me when I stepped into the room with the Hirst exhibit was the...
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    Josef Sudek exhibit

    >Yes, Sugimoto is at MFA.

    Geez, I need to pay closer attention and/or the MFA needs to do better advertising. (All I've been hearing from them is sports cars and Damien *&%#ing Hirst.) On the...
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    Josef Sudek exhibit

    Where's the Sugimoto exhibit? Not at the MFA, is it?
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    Josef Sudek exhibit

    It's a great exhibit. Well worth a trip.

    Chris
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    Film testing : Zone VIII

    Try running tests at a few different development times, e.g., 15 min, 13.5 min, 12 min, and 10.5 min. You should be able to interpolate between points to get your desired OD.

    For what it's...
  20. Fuzzy edges-- does stopping down help?

    Ignoring tilt and plane of focus issues for the moment, stopping down should help sharpen the corners. The softness is probably due to coma. For a given off-axis angle, coma scales as...
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    B&W landscape photography

    >I want to add Bradford Washburn to my list.

    Panopticon in Waltham, MA had a show of his work last year - most, if not all, images out of "Mountain Photography" I believe. They'd scanned a number...
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    B&W landscape photography

    Basic reading comprehension here folks: the subject was William Clift, not Ansel Adams.

    Clift self-published two books, one in 1987 and the other in 1993. Paul wasn't aware of anything he'd done...
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    B&W landscape photography

    >Oh, and Chris: Didn't Ansel come out with a new image in the early 2000's? :-) LOL, etc.

    Not sure I follow you. Certain Places was printed in 1987. The latest image is from 1984. A Hudson...
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    B&W landscape photography

    >I agree with you on William Clift. Has he done anything lately? I mostly know hs work from the 70s and 80s.

    My copy of "A Hudson Landscape" is dated 1993.
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    B&W landscape photography

    Several other people who do very good work but haven't gotten mention so far:

    William Clift, Ron Rosenstock, and Dodo Jin Ming for her "Free Element" series
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    B&W landscape photography

    Paul Caponigro. Weston. Bernd & Hilla Becher. Robert Adams.

    Their work is visually engaging, honest (i.e., not romanticized or conveying any forced emotion), and presents a strong coherent...
  27. Have any of you had laser vision correction?

    For whatever its worth, an ex-girlfriend of mine was/is an ophthalmologist. Lasik was one of her specialties. She wore glasses and, to the best of my knowledge, so did all of her colleagues. ...
  28. Have Internet Forums Revitalized LF Phototography?

    >has the internet lead to a revitalization of large format photography?

    No. At least not as an artistic medium. It's not that the internet isn't beneficial, it's just that it hasn't had a...
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    I did it!

    Congratulations! If you want the necklace (?) to fill more of the frame then you should use a longer focal length lens - want it twice as big as it appears now, then use twice the focal length ,...
  30. Thread: a survey

    by Chris Gittins
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    a survey

    > $31,000 Approximate

    Holy #%*&!!! That's... That's... That's a downpayment on a nice house. Or three, maybe four, kidneys on the black market. Wow. (Very nice hardware though.)

    My...
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    150mm LF lens

    Remove both the front and rear elements and stop down as much as possible. The aperture should be no larger than 1 mm in diameter. That combination will provide good focus at infinity.
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    Shooting days per year?

    Probably 20-25. Frequency varies from season to season - winter being least frequent. Sometimes I'll go out once or twice a week for a month and then go several months without taking a shot. If...
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    Lens coating damage

    Actually, I think Everclear is what you want for lens cleaning. The "better uses" issue remains however.
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    Lens coating damage

    Geez, I'd think vodka would be pretty good for lens cleaning. Seriously. 20-40% ethanol in water? I'd think that would work pretty well. Except, of course, that there may be far better uses for...
  35. Determining N-2, N-1, N, N+1... etc. development

    Picking up a book is a good idea. One not mentioned above is "Beyond the Zone System" by Phil Davis. It covers basic Zone System principles as well as sensitometry in general, and is quite...
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    northern california

    If memory serves, you get some nice days in early March - sunny, 60's and 70's - but you're still on the tail end of rainy season.

    Chris
  37. Need to Clean Remnants of Cellophane Off Lens

    I went looking for a can of WD40 in my basement but couldn't find one - I'll fix that tomorrow - so, since I can't read the ingredient label, what follows is my semi-educated guess. I'd expect WD40...
  38. Need to Clean Remnants of Cellophane Off Lens

    >nowadays I have to sign off when we buy it that it will only be used for research purposes (here in Germany) - something to do with the use of acetone in some illegal drug production process.
    ...
  39. Need to Clean Remnants of Cellophane Off Lens

    "The [acetone] you get at the paint store will be sastifactory for what you are doing. "

    I've never been real happy with straight, run-of-the-mill acetone for optics cleaning. The issue is ...
  40. Kalart Rangefinder accuracy and fast lenses

    Recalibrating the rangefinder isn't too bad a task. I followed the path of least resistance from graflex.org. It took me an evening once I had a manual, etc. I did some checks on objects off at...
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