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  1. Replies
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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...
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    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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