HDTenEightyP/NetNews huggingface dataset:
From: madson@unix.SRI.COM (Carl Madson)
Newsgroups: rec.photo
Subject: Great photo book for gearheads
Date: 14 Aug 92 21:25:35 GMT
Organization: SRI International, Menlo Park, California


I just received a neat book on cameras that is unlike any other I've bought
so far: "Camera Technology--The Dark Side of the Lens", by Norman Goldberg.
Academic Press, '92, 328 pp., $39.95, ISBN 0-12-287570-2.

It's full of diagrams on how various items work: shutters, moving mirrors, 
autofocus, film support systems, exposure systems, lenses, different camera
types, and special testing methods for a variety of photographic systems.
The diagrams are not beautiful, but very useful and interesting. Goldberg has
been mucking about (repairing and analyzing) with camera technology for the
past 45 years, so he knows whereof he speaks. Apparently he has also estab-
lished solid relationships with several manufacturers, so there is information
here not available to the 'average' researcher. It's quite different from the
usual technical photo fare, and I recommend checking it out. (I ordered mine
directly from Academic Press, at 800-321-5068, U.S./Canadian customers. I can
get the address for anyone else.)

No associations with A.C., Goldberg, et al. other than customer satisfaction.
(BTW, the book has a solid recommendation from Rudolf Kingslake, an Optics
God.)


		--Carl Madson, SRI International, Menlo Park, CA
From: jack@dcs.glasgow.ac.uk (Jack Campin)
Newsgroups: rec.photo
Subject: Re: media permanence (was Re: photo-developing, specifically nudes)
Date: 17 Aug 92 12:43:36 GMT
Reply-To: jack@dcs.glasgow.ac.uk (Jack Campin)
Organization: COMANDOS Project, Glesga Yoonie

gsnow@clark.edu (Gary Snow) wrote:
> jacobson@cello.hpl.hp.com (David Jacobson) writes:
>> Jack Campin addresses digital media problems as though the problem
>> were only a materials problem.  (How long will tapes last?)  A much
>> more serious problem is obsolesence.  Ever tried to find someplace
>> that will read an 800 bpi tape, or a Hollerith (IBM) card?  How about
>> an 8 inch floppy disk?
> Actually, thats one thing great about digital media. If a new format comes
> out, all you have to do is copy your old stuff to the new format (with NO
> loss in quality, every digital image is just as good as the original, no
> matter how many copies are made from it), and you are all set.

The problem with this is that people will only take such action if they
know (a) that there is a problem and (b) what to do about it.  The
photographic materials industry has never told the general public that
image permanence is a problem, and the absence of a generally known need
has left image restoration as an obscure cottage industry.

Most photographs people decide to keep now end up in vinyl albums which are
sold with no warning of what they do to their contents.  People don't keep
negatives because they don't see any reason to, not knowing that the
negatives will outlast the prints by decades.  By the time they realize
that their family history has been reduced to cyan ghosts it's too late.
Expecting the mass consumers of photography to manage their images like an
insurance company's data archive is sheer fantasy.  Look at the way images
are handled at present:

- How many wedding videos do you suppose get rewound regularly to avoid
  print-through?

- Mass-market photofinishers return negatives along with the prints loose in
  acidic cardboard envelopes.  You couldn't even buy inert negative files at
  the dropoff/collection point if you wanted to.  So the negatives stay in
  those envelopes till they get scratched and bleached to oblivion, or lost.

- There's a sizable boom in transfers of slides and home movies to video.
  How many of the customers know that Kodachrome will outlast videotape
  by an order of magnitude?  How many of them keep those films?

- My local Yellow Pages has five pages of photography-related firms.  Not
  a single entry for an image restoration or archival consultancy service.

Colour print technology, because of the way it's marketed, is a process for
the chemical dissolution of history, and digital image storage will do the
same job even more effectively.

-- 
--  Jack Campin    room G092, Computing Science Department, Glasgow University,
17 Lilybank Gardens, Glasgow G12 8RZ, Scotland   TEL: 041 339 8855 x6854 (work)
INTERNET: jack@dcs.glasgow.ac.uk or via nsfnet-relay.ac.uk    FAX: 041 330 4913
BANG!net: via mcsun and uknet     BITNET: via UKACRL    UUCP: jack@glasgow.uucp
Newsgroups: rec.photo
From: gmw1@cunixa.cc.columbia.edu (Gabe M Wiener)
Subject: Document copying
Organization: Columbia University
Date: Sat, 22 Aug 1992 04:04:44 GMT

G'day folks.  Can anyone make some recommendations on methodology for
document copying?

There are a number of turn-of-the-century volumes of which I need access
to excerpts.  Unfortunately they're way too fragile to press down onto a
xerox machine.  The paper is aging rapidly and isn't likely to last too
much longer.

I figured that since the archive in which these documents are stored is
*way* short of funds and has no money to get these things filmed, I'd
take some photographs of the stuff I need, and as much else as I can,
if only so that these manuals will be available in some form in the years
to come.

Now for the question....what's the best way of doing this?  I've got
35mm and 6x7 equipment, but have never done any document copying.  Is
there a recommended film for this purpose?  (We're talking plain text,
and maybe some line-art illustrations...no color)   And after the stuff
is on film, is there a recommended *paper* for printing document copies?

I remember hearing about "document copying films" but have never used
them.  Are there such things?  What sort of lighting is best?  
I assume that the copy-stand approach would be essential.  Any advice on
*placing* the material on the stand so that a) the best lighting can be
achieved, and b) as little strain as possible is done to the binding?

Any help in this area would be *most* appreciated....


--
Gabe Wiener - Columbia Univ.     "This 'telephone' has too many shortcomings 
gmw1@cunixa.cc.columbia.edu       to be seriously considered as a means of 
N2GPZ in ham radio circles        communication. The device is inherently of
72355,1226 on CI$                 no value to us." -Western Union memo, 1877
Newsgroups: rec.photo
From: ka1gt@cbnewsm.cb.att.com (robert.m.atkins)
Subject: Re: Sigma 600mm f/8 Reflex on AF cameras?
Organization: AT&T
Distribution: na
Date: Sat, 15 Aug 1992 00:14:39 GMT

In article <1992Aug14.202133.24614@ninja.zso.dec.com>, stoppani@ninja.zso.dec.com (Pete Stoppani) writes:
> 
> 
> Has anyone used Sigma's 600mm reflex lens with an AF camera?
> What limitations are there in addition to the fixed aperature and
> manual focus?  Does the camera's AF sensor still work? In other words,
> does that 'in focus' indicator light up when the picture is in focus?
> 
> Also, how well does it perform?
> 
> I'd especially like to here from any Canon EOS
> users that have used this lens.  I'm thinking about 
> getting one for my Elan.

I haven't used the Sigma, but I have used a Tamron 500/f8 on an EOS 10s
and 630. You do NOT get any "in focus" signal, but focussing on the screen
isn't too hard. You can't use multipliers without playing some tricks - but
you probably wouldn't want to anyway given the poor results that mirror lenses
give with multipliers. On EOS cameras I set the mode to Av, set the aperture
to f1 and exposures are correct.

===============================================================
Bob Atkins  AT&T Bell Labs  email (direct)  att!clockwise!rma
===============================================================
From: zhoud@dwalin.ECE.ORST.EDU (Dongsheng Zhou)
Newsgroups: rec.photo
Subject: Metering Method in Minolta Maximum 7000?
Date: 17 Aug 92 22:22:02 GMT
Distribution: na
Organization: none


     Hi, I like to know what kind of metering system the minolta 7000 has. 
Does it use average, center weighted or matrix? 

     I am going to Yellow Stone, Tetone and Glacier
national parks next week. I am seeking for any photographic suggestions at 
above areas. If you have some, please e-mail me. Thanks.
From: phr@soda.berkeley.edu (Paul Rubin)
Newsgroups: rec.photo
Subject: Re: The quality of Nikon "E" lenses?
Date: 23 Aug 92 00:39:15
Organization: CSUA/UCB
	<1992Aug21.122441.29724@murdoch.acc.Virginia.EDU>
	<1992Aug21.135000.2152@brandonu.ca>
	<1992Aug23.034956.5946@murdoch.acc.Virginia.EDU>
NNTP-Posting-Host: soda.berkeley.edu
In-reply-to: jmb5b@faraday.clas.Virginia.EDU's message of Sun, 23 Aug 1992 03:49:56 GMT

I have the 100/2.8e and used to have the 28/2.8e.
Both were decent lenses, a lot smaller/lighter than the
corresponding Nikkors.  The 28/2.8E in particular was a fine
companion to the small EM/FG/FG20 bodies as a walking-around
camera-lens combination.
From: gsnow@clark.edu (Gary Snow)
Newsgroups: rec.photo
Subject: Kodak Publications (was: Flourencent light question)
Date: 14 Aug 92 15:48:20 GMT
Article-I.D.: clark.1992Aug14.154820.60
Organization: Clark College, Vancouver, Wa.  USA

In article <226@metran.UUCP> jay@metran.UUCP (Jay Ts) writes:
>
>If you really want to know about this, I suggest you get a copy of Kodak's
>Publication E-104, Color Photography Under Fluorescent and High-Intensity
>Discharge Lamps.  Call Kodak at 1-800-242-2424.

Does anyone have a list of Publications by Kodak and other Camera/Lens/Film
manufacturers? Like this one about, and Cannons Speedlight reference guide.

Any help appreciated.......

Gary

-- 
-----
Gary Snow
uunet!clark!gsnow  or  gsnow@clark.edu
From: daf00@da.amdahl.com (Dana A Freiburger)
Newsgroups: rec.photo
Subject: Thanks everyone (F4 and 8008 questions)
Date: 20 Aug 92 17:48:58 GMT
Distribution: usa
Organization: Amdahl Corporation, Sunnyvale CA


Hi all,

Thanks for the feedback comparing the F4 and 8008.
My girlfriend is going with the 8008, knowing all
the little gotcha's and such now.   Best of all,
I get her old FE2!.  Anyway, thanks everyone.

Dana
--
Dana A. Freiburger, Bringup Engineer   |    daf00@cd.amdahl.com     |
Amdahl Corporation, Sunnyvale, CA      |      (408) 746-3414        |
[     The opinions expressed above are mine, solely, and do not     ]
[    necessarily reflect the opinions or policies of Amdahl Corp    ]
Newsgroups: rec.photo
From: wjh@cbnewsl.cb.att.com (william.j.hery)
Subject: Correction Re: Olympus Infinity (looks like an AF-1)
Organization: AT&T
Date: Sat, 15 Aug 1992 01:45:51 GMT

>>I have just bought a Olympus Infinity from a second-hand shop...

The responses I posted to this question referred to the Infinity STYLUS
(which I own). Unfortunately, I posted in haste and forgot that there
were other Infinity models. Sorry for any confusion.

Bill Hery
AT&T Bell Labs
201-386-2362
hery@att.COM
From: mvolo@ecsvax.uncecs.edu (Michael R. Volow)
Newsgroups: rec.photo
Subject: Re: Which high-speed neg. film?
Date: 19 Aug 92 03:52:10 GMT
Organization: UNC Educational Computing Service


For indoor, incandescently lit, people shots I have had bad luck with
Ektar 1000. Besides being a bit grainy, it was had to color balance
in printing (I used no filter). I wound up with either reddish or
yellowish color casts no matter how I tried to balance out the 
tungsten light. I also felt that the color in this situation was
somewhat muddy. I have also used Kodak Gold 1600 with better color
fidelity in this lighting. If you can live with an ASA 400 speed
emulsion, Fuji Professional N is great, even under tungsten light.
And it's quite fine grained and easy to color balance out the tungsten
color cast.
-- 
Michael Volow, Psychiatry, Durham VA Med Center, Durham NC 27712
919 286 0411 Ext 6933               mvolo@uncecs.edu
From: stevek@gobi.UUCP (Stephen Kogge)
Newsgroups: rec.photo
Subject: Re: Me and E6
Date: 12 Aug 92 12:02:01 GMT
Organization: Underwater Imaging

In article <rodney.713551781@kitscoty> rodney@cs.UAlberta.CA (Rodney Gitzel) writes:
>
>Well, I posted last week that I was going to dive into my
> 1-gallon kit over the weekend.  Of course, other things
>....
>Where can I get some good documentation?  In the hobby kit?
> I want something that will tell me what to do with the
> chemicals (the docs *implied* you pour used 1st developer
> back into the bottle with the unused), for instance.  Something
> that someone who's never done E6 (but who has done TMAX) could
> fathom.

	You can either re-use the first developer or be sure of more constant
results and use it once. For a long time I recycled the first dev. then
I decided to just keep an extra 1 gal concentrate bottle for when I ran
more than 24 rolls of film. The JOBO makes it easier to do things "right"
and never re-use any of the chemicals, and even though you violate the
first dev capacity it works!

	To use the BESSELER drum and roller it took about 40 min and
was a little hectic filling and draining the tube. With the pre-measued
JOBO system it is just a matter of fill,time,drain,fill,time,drain....
much simpler. With the JOBO you can almost keep your hands  dry, with
a simpler tube your hands are wet a lot as you try to drain, fill and
wash in the tube.

	One thing to remember is that these chemicals do not keep long
so unless your normal shooting session generates the 20 to 40 rolls of film a
1 gal kit processes you may be discarding unused chemicals.

>
>Rodney Gitzel
> 


	Steve Kogge
	stevek@uimage.com
From: PNCSPPC@CCVAX1.CC.NCSU.EDU
Newsgroups: rec.photo
Subject: Anti-Fog??
Date: 20 Aug 92 17:32:50 GMT

Do they still make "anti-fog"?  Does it work?  I have some old 400 ASA B&W
film which I just never got around to developing.  Well, now I want to process
it but I know there will be a good bit of fog.  What I'd like to know is how
can I minimize the fog when developing this film?  I was planning to use Agfa
Rodinal for the developer, but if something else would be better in this case
I'd use it instead.  Any help would be appreciated.

Phil Calvert
 
<Bitnet: pncsppc@ncsuvax / Internet: pncsppc@ccvax1.cc.ncsu.edu>
Xref: sparky rec.photo:14436 alt.models:1112
From: DH02 <DH02@polytec1.polymtl.ca>
Subject: Re: RE: Cambridge.
Organization: Ecole Polytechnique de Montreal
Date: Sun, 16 Aug 1992 17:59:11 GMT

In article <sw7m_+#.hchong@netcom.com> hchong@netcom.com (Hoi Chong) writes:
>From article <14AUG92.16134336.0033@vmxa.polymtl.ca>, by DH02@polytec1.polymtl.ca (DH02000):
>> In article <1992Aug13.211408.24283@en.ecn.purdue.edu> cmcdowel@en.ecn.purdue.edu (Charles E. McDowell) writes:
>>>I am posting this message as a warning to anyone who is considering ordering
>>>any photo supplies through a place called Cambridge Camera in New York.
>>>Without going into detail, these guys are extreme sleazballs.  Their ads appear
>>
>> How appropriately said!  I must describe my experience too.  I wanted
>> I wanted to buy a Nikon F4s and Nikkor lenses, SB-24, filters, etc.
>
>Wow, what's next?  Perhaps we can get Charles Manson to take over
>Mother Theresa's work in India?  No sir, you don't buy a Rolls Royce
>thru the local sleazy car dealer (who just move here from NYC)!
>Don't mean to laugh at you, but having dealt with Cambridge myself
>I just couldn't help it.
>.

Gee, thanx a ton, Mr. Smarty-Pants!  It's been a great privilege for
a "lesser mortal" like me to have had the opportunity to provide a
few laughs to a "greater mortal" like you!  However, my sincere
apologies for the fact that your "laughs" were just *partial*, b'cos
I cancelled my order with Cambridge!  Has it been painful for you
to hold your jaws in the "half-laffing" position?

Anyways, the next time I need any photo stuff, I'll order it from
Cambridge, and also let you know so that you could get a "full" laugh!
Anything for your amusement............

Finally, go get a life!!!

-Tamal Ghosh
 Departement de Genie chimique
 Ecole Polytechnique de Montreal

P.S.: I apologize to all the other readers for this outburst, and
      disturbing the peace on rec.photo of which we'er so proud
      of!  I'm quite unhappy myself :-(
THIS IS MY FINAL POSTING ON THE TOPIC.
From: feldman@hal9k.cxo.dec.com (james feldman)
Newsgroups: rec.photo
Subject: Re: View Camera Questions
Date: 18 Aug 92 17:29:35 GMT
Reply-To: feldman@hal9k.cxo.dec.com (james feldman)
Organization: Digital Equipment Corporation

In article <l907e8INNcd@appserv.Eng.Sun.COM>, fiddler@concertina.Eng.Sun.COM (steve hix) writes:
|>Zone VI was bought a while back by Calumet, a pro photo supplier from
|>Ohio.  They advertise in several photo magazines and will send you a
|>nice catalog/prices.
Well..They are actually located just outside of Chicago Ill. and have outlets
in LA, Chicago and I believe NYC.

jimf ;'{)}
     
Newsgroups: rec.photo
From: zrepachol@cc.curtin.edu.au (Paul Repacholi)
Subject: Re: media permanence
Organization: Curtin University of Technology
Date: Fri, 21 Aug 1992 15:06:09 GMT

In article <1992Aug20.155424.19150@clark.edu>, gsnow@clark.edu (Gary Snow) writes:
> In article <1992Aug20.001750.17439@pbhya.PacBell.COM> whheydt@PacBell.COM (Wilson Heydt) writes:
....
>>Paper tape.
> 
> Yeah, I concede that paper tape is digital media, and been in use for quite
> some time, but is it magnetic or optical digital media...:-)
> 

You might talk to the US census ( I think ) dept about the collection of bits
they have, all in perfect order and 100% readable. Trouble is, no-one knows how
to turn them into information...

Not only do you have to garentee the permenance of the media, you have to have
working drives, decoding software ect. Tryed to buy a set of heads for an IBM
2211 disk drive lately? ( 1965 vintage ) Care to try to 'de-JPEG' an image so
it is compatable with what ever is around in 100 years?

The computer industry has demonstrated that IN PRACTISE the 'permanance' of
digital is not realized due to human failings.

~Paul

Newsgroups: rec.photo
From: weisz@news.cis.ohio-state.edu (ivan weisz)
Subject: slide projector advice needed
Organization: The Ohio State University Department of Computer and Information Science
Date: Sat, 15 Aug 1992 16:09:17 GMT

I am looking for a slide projector for use at home. Since space is limited,
I would like one that can produce a relatively large picture from a short
distance. Probably a zoom-lens would help.
I have limited resources, so I am willing to sacrifice some quality or 
extra features for a lower price. 
If the machine could handle straight trays not just the stupid circular ones, I
would consider it to be a definite plus. 
If you have any advice on what slide projector to choose, I would appreciate 
it.
Ivan Weisz
Newsgroups: rec.photo
From: bu890@cleveland.Freenet.Edu (Brian Segal)
Subject: Re: What is a color meter? (was Flourencent light question)
Organization: Case Western Reserve University, Cleveland, Ohio, (USA)
Date: Tue, 18 Aug 92 04:36:43 GMT


A color meter is a device that reads colored light according to a scale
of kelvin degrees derived from the color of a black body when heated
to various temperatures.  In other words, a tungsten light bulbbulb that
is designed for photography radiates a color that is equal to, say, iron
heated to about 3200 degrees kelvin. The sun equals about 5500 degrees
kelvin and so on.  The meter in it's simplest form simply reads the light
usually, but not always in a three color configuration of red green and blue,
and from this data you consult a table which converts color temperatuure
to filter type and intensity depending on the film being used as different
films are sensitive to different wavelenghts of light, and hence different nt
colors.

More sophisticated meters like my Gossen Color-Pro 3F read red, green and blue, ans  
and tell you the color temp, the mired value (a table of temperature equivalents
which I won't go into here) of the Kodak wratten filter type (much handier) as well   
well as the CC filter value to use in addition to the colot temp filter.

Also, the Gossen reads both flash and ambient without a seperate
attatchment (required on the Minolta) asd gives both lux and lux-second
readings for calculation of illumination intensityand consistency
of flash output.

These meters are hand held and cost a bundle...

brian
Newsgroups: rec.photo
From: enenkel@cs.toronto.edu (Robert Frederick Enenkel)
Subject: phone-orders (a good laugh)
Organization: Department of Computer Science, University of Toronto
Distribution: na
Date: 19 Aug 92 02:13:09 GMT

Yesterday I called Foto-Cell in New York after seeing their advertisement
in Popular Photography.  I asked about a used Eclair ACL 16mm movie camera
which they had listed without price.  The guy spent a couple of minutes rapidly
extolling the virtues of that particular instrument before telling me the
price ($4200).  I was about to say that, unfortunately, that was more than
I could afford, when the salesman snapped, "Well, are you going to order it
or not?".  I said no, thank-you.  "What?  After all that and you're not going
to order it?", he said.  Then he hung up.  I wonder where they find such
courteous people to answer their phones... :-)

Robert Enenkel
Newsgroups: rec.photo
From: bu890@cleveland.Freenet.Edu (Brian Segal)
Subject: Re: View Camera Questions
Organization: Case Western Reserve University, Cleveland, Ohio, (USA)
Date: Mon, 17 Aug 92 11:55:36 GMT


On the subject of yaw free movements, what this means is that the tilt
axis is below the swing axis such that if you tilt the entire rail
and then level the standards back to perpindicular, the swings about the
verticle axis are parallel in plane to the level floor.  This means that
when you swing the standards with respect to each other all sides
remain parallel to each other, and you avoid having image distortion
and other problems to a non-alignment of the
verticle axies..

That is probably about as clear as mud..but it's as clear as I can be having
just completed a 15 hour drive accross eastern Canada.

brian
From: whheydt@pbhya.PacBell.COM (Wilson Heydt)
Newsgroups: rec.photo
Subject: Re: media permanence (was Re: photo-developing, specifically nudes)
Date: 20 Aug 92 17:06:14 GMT
Reply-To: whheydt@PacBell.COM (Wilson Heydt)
Organization: Pacific * Bell, San Ramon, CA

In article <1992Aug20.155424.19150@clark.edu> gsnow@clark.edu (Gary Snow) writes:
>In article <1992Aug20.001750.17439@pbhya.PacBell.COM> whheydt@PacBell.COM (Wilson Heydt) writes:
>>
>>While I agree with the basic premise--about 15 years ago I was working
>>a project that would have required storing data for entire working
>>careers *plus* 75 years--you have both missed a bet.  There's been a
>>digital medium in use far longer than you think.
>>
>>Paper tape.
>
>Yeah, I concede that paper tape is digital media, and been in use for quite
>some time, but is it magnetic or optical digital media...:-)

Most of the recent paper-tape readers are optical.  :-)

(I should have mentioned punched cards, too.  They're over 100 years
old and still readable.  Just ask IBM.  James Burke got to play with a
19th century tabulator in _Connections_.)

	--Hal
-- 
Hal Heydt                    |    "Boycott Time-Warner"
Analyst, Pacific*Bell        |         --J. Danforth Quayle
510-823-5447                 |    "... kill all the lawyers."
whheydt@pbhya.PacBell.COM    |         --William Shakespeare
From: phr@soda.berkeley.edu (Paul Rubin)
Newsgroups: rec.photo
Subject: Re: Nikon FG (? info wanted)
Date: 20 Aug 92 11:42:41
Organization: CSUA/UCB
NNTP-Posting-Host: soda.berkeley.edu
In-reply-to: daly@chocolat.princeton.edu's message of Thu, 20 Aug 1992 17:35:49 GMT

    I have no complaints about the camera.  The metering appears to be quite
    accurate, and the TTL metering works well too.  It's of reasonably sturdy
    construction and is compatible with most, but NOT ALL, Nikkor lenses.  I
    believe that the rest of these lenses can be used on the FG but not with
    automatic metering.

Don't try this.  If you force non-AI lenses onto the camera you can
damage the camera's aperture follower tab.
Newsgroups: rec.photo