HDTenEightyP/NetNews huggingface dataset:
From: erc@unislc.uucp (Ed Carp)
Subject: Re: Depth of Field preview - any 'cheap` SLRs?
X-Newsreader: TIN [version 1.1 PL6]
Organization: Unisys Corporation SLC
Date: Tue, 15 Dec 1992 18:27:11 GMT

Andy J Taylor (Andy.Taylor@brunel.ac.uk) wrote:

: In article <1992Dec8.011847.22208@jarvis.csri.toronto.edu>
: acs@csri.toronto.edu (Alvin Chia-Hua Shih) writes:
: 
: >In <BywE7M.Gy9@fulcrum.co.uk> rct@fulcrum.co.uk (Richard Taylor) writes:
: >
: >>Are there any low-end cameras that depth of field preview? It seems like a
: >>very simple thing to add...
: >
: >It *is* a simple thing to add, which is why so many rec.photophiles get
: >upset at camera manufacturers!
: >
: >>Low-end means near the price of a Rebel IIs (1000FN to me!).
: >

: Can't you get Praktica cameras in the US/Canada ?  The BX20(s) comes
: with everything you need for just 150 quid over here.  ***** rating
: from Amateur Photographer, too.

My Canon FTb (not the 'n' model) has a depth-of-field preview on it.  It's
20 years old and still works great.  In the words of one camera salesman I
know "it's built like a tank" :)  I don't know if you're interested in
something like this - most seem to be interested in the latest "whizz-bang"
computer-controlled autofocus do-everything-but-fix-you-breakfast cameras.

Around the mid-70's, most SLRs had a depth-of-field preview lever on 'em.
I wonder why the manufacturers took 'em off.  I particularly remember the
Minolta SRT-10X series (with fondness for everything but where they put the
damned meter switch!)...
-- 
Ed Carp			erc@apple.com, erc@saturn.upl.com	801/538-0177

Who and what would you be if you went beyond your deepest fears?
Newsgroups: rec.photo
From: micki@netcom.com (Michelle Stone)
Subject: Re: Dumb Photographers
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Distribution: na
Date: Wed, 16 Dec 1992 08:21:46 GMT

<IDMLH@ASUACAD.BITNET> writes:

>I had a similar experience this summer at Yellowstone National Park.
>I couldn't believe the amount of people with their instamatics so close
>to the animal that I kept thinking "OH GOD...THEY'RE GOING TO PISS OFF
>THAT ELK AND HE'S GOING TO CHARGE LEAVING SUCH NICE HOLES IN THEIR BODIES."
>Thank Goodness nothing like that happened while I was there.  But if you
>notice situations like that, the REAL photographers are as far away as
>possible (so as not to induce bodily harm) with  TELEPHOTO LENS.

Nope... the real photographers are miles away.  They are taking shots
in the wild.  They sweat to get their gear in 20 miles away from the
nearest road to get away from the schlucks and catch wildlife in
the "wild".

Michelle

-- 
micki@netcom.com

By the way.  I find myself to be a recent addition to the 
unemployment statistic.  I am a software manager.  If  you know
of an opportunity, please let me know!
From: denis@pangea.Stanford.EDU (Denis Schiozer)
Newsgroups: rec.photo
Subject: 3 Questions
Date: 11 Dec 1992 18:04:38 GMT
Organization: Stanford Univ. Earth Sciences
NNTP-Posting-Host: pangea.stanford.edu

I would like some help in 3 subjects.

1) Does anyone know a really good book on photography,
   with useful hints?

2) The batteries for the 10s are good for only about 15
   films. Is this normal?

3) How expensive is to buy all the stuff to develop
   black and white pictures at home?

Thank you very much for your help,

Denis
denis@pangea.stanford.edu

Newsgroups: rec.photo
From: ka1gt@cbnewsm.cb.att.com (robert.m.atkins)
Subject: Teleconverters (multipliers). User comments (esp Canon EF) wanted.
Organization: AT&T
Distribution: na
Date: Wed, 16 Dec 1992 21:41:03 GMT

I'd like to take a survey of teleconverter use (especially the use of
teleconverters with Canon EOS systems). If you use a teleconverter (1.4x
or 2x) I be interested in knowing the following:
(AF = Auto Focus)

1 - Which AF converter(s) do you have?
2 - Which AF lenses (Canon EF or compatible) do you use them with?
3 - Which AF lenses give reliable AF operation with the converters?
    and does AF performance (speed or accuracy) suffer?
4 - Which AF lenses require Manual focus when used with the converter?
5 - Which lenses are incompatible with the converter and why?
6 - What kind of results do you get (quantitative if possible)?

#6 is tricky since one person's idea of "good" performance can be very
different from another's, so try to give some indication how you arrive
at your conclusion (e.g. 4x6 prints, 10x loupe and slides or whatever).

Please email responses to me and I will summarize and post to rec.photo.
       ^^^^^
Maybe the results can be added to the Canon EOS FAQ at a later date.

Note: I am aware of Lepp's optical tests on converters, but he doesn't
comment on how well (or even if) the AF functions hold up. For example, on
an variable aperture zoom do you get AF operation only at some settings, but
not at others? A 1.4x converter should give AF operation if the prime lens
is f4 or faster (f2.8 for a 2x). Is this in fact always the case? Do any
slower (f5.6?) lenses also give AF operation? Do any f4 + 1.4x combinations
not allow AF operation? You get the idea....

===============================================================
Bob Atkins  AT&T Bell Labs  email (direct)  att!clockwise!rma
===============================================================
Xref: sparky rec.photo:21658 misc.consumers:20521
From: wb8foz@skybridge.SCL.CWRU.Edu (David Lesher)
Newsgroups: rec.photo,misc.consumers
Subject: Re: Wanted: Experiences with Mail Order Film Processors
Date: 12 Dec 1992 02:48:35 GMT
Organization: NRK Clinic for habitual NetNews abusers - Beltway Annex
Reply-To: wb8foz@skybridge.scl.cwru.edu (David Lesher)
NNTP-Posting-Host: skybridge.scl.cwru.edu

I made the mistake of taking my work to a Kodalux - connected
drugstore. They printed my B&W negatives on color film. Sure do
look weird.....

I'm waiting to see if they will refund my money as requested....

--
A host is a host from coast to coast..wb8foz@skybridge.scl.cwru.edu
& no one will talk to a host that's close..........................
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433
Newsgroups: rec.photo,comp.graphics,alt.cd-rom
From: jk87377@cc.tut.fi (Juhana Kouhia)
Subject: Re: Viewing Kodak Photo-CD on X-Windows
Keywords: Photo-CD, CD-ROM, X-Windows
Organization: Tampere University of Technology
Date: Tue, 15 Dec 92 09:55:48 GMT


In article <10DEC199218012340@reg.triumf.ca> advax@reg.triumf.ca
(A.Daviel) writes:
>
>After trying xv, xloadimage, ppmquant and ppmtogif, I found that 
>cjpeg gives me the best results.

Some comments on 24bit to 8bit quantization you propably
are writing about in above (it doesn't matter if you're not).


xv -- there's two or three deffirent quality quantizing routines;
you should pick the best one to get the quality you need.

A year or so ago I tested various quantizers; the results are
following:

Rlequant with the default values was the best one.
Then fbmquant, xv, djpeg in any order; what I didn't like was
strange dots on the djpeg image -- for example on blue area there was
green dots, or such.
Ppmquant with F-S dither gave the poor result; there was clear
problems in algorithm or so -- I got visible chessboard pattern
to areas which were perfect made by all other programs.
Ppmquant without F-S dither is not appropriate idea after seeing
the correct F-S dither in other programs.
I don't know if the problem in ppmquant is corrected; pbm
was not in a special test phase or so when I tried it;
though, I let the author know about the problem.


I recommend to use rlequant with default values; increasing the
table size found from that program (I recall it is -b option which
controls the table) doesn't help, instead, I found out that
it decreased the quality much.


Juhana Kouhia
--
Maintainer of the digested mailing list Middle-Eastern Music;
for discussions on Middle-Eastern and related music.
Subscriptions to middle-eastern-music-request@nic.funet.fi.
Newsgroups: rec.photo
From: mcovingt@aisun3.ai.uga.edu (Michael Covington)
Subject: Re: TMAX in *print* developer??
Organization: AI Programs, University of Georgia, Athens
Date: Mon, 14 Dec 1992 19:52:05 GMT

[various people write...]
>> >    I am trying to get some ideas of how to get a lot of grains on my
>> >picture or slide (for special mood). Any idea on how to get a lot
>> >of grains on b&w , color and slide film is welcome.
>> 
>> Try developing your Tri-X Pan (or T-Max 3200) in print developer.
>
>Really?!??  Cool.  I would like to try this -- any general
> recommendations for temperature and time?  (I know this depends
> on the developer, but a good initial guess would likely save
> me a few rolls of TMZ...)

OK, off the top of my head, try 5 minutes in Dektol 1:2 at 68 F, and
bracket exposures widely.  (This will be a fairly strong "push" development,
so expose at the rated speed and at twice and four times that speed, and
see what you get.)

Results will be very grainy and rather contrasty.
-- 
:-  Michael A. Covington     internet mcovingt@uga.cc.uga.edu :   Verbum caro
:-  Artificial Intelligence Programs       phone 706 542-0358 :    factum est
:-  The University of Georgia                fax 706 542-0349 :  et habitavit
:-  Athens, Georgia 30602-7415 U.S.A.     amateur radio N4TMI :   in nobis...
Newsgroups: rec.photo
From: kienwen@zoo.Princeton.EDU (Kien Wen Sun)
Subject: Nikon body forsale
Originator: news@nimaster
Organization: Princeton University
Distribution: nj
Date: Fri, 18 Dec 1992 18:24:31 GMT

I have a Nikon F301(N2000 in US) body for sale

Spec:

    2~1/2000 s  shutter speed
    auto DX code reading
    build in motor winder up to 2.5 fps
    exposure mode:program high,program,aperature pro. and manual mode
    self-timer
    exposure lock
    exposure compensation:+2~-2 ev in 1/3 step
    DX code can be manually override           
    TTL flash in program mode
    flash syn up to 1/125 s
    box,instruction and warranty card(body in mint cond.)

ask for $210
From: nkane@terapin.com (Nathan Kane)
Newsgroups: rec.photo
Subject: Re: Teleconverters?
Date: 12 Dec 92 17:43:07 PST
Organization: BBS

The image does suffer because you are putting more pieces of glass in front of
the film. If it is for general use, fun type photography then it isnt really a
problem, but don't try to get the pictures into National Geographic or
anything...
As for the apature, ifi remember right you would multiply it by whatever the
power ofthe teleconverter is, so a 1.4 would become a 2.8...
From: bjs@uts.amdahl.com (Barry Sherman)
Newsgroups: rec.photo
Subject: Swelling of wet paper
Date: 15 Dec 92 19:46:38 GMT
Reply-To: bjs@amdahl.uts.amdahl.com (Barry Sherman)
Followup-To: rec.photo
Organization: Amdahl Corporation, Sunnyvale CA

I'm posting this as a bit of trivia which may or may not be of interest.  I'm
sure that some day it'll come in handy to me, though I can't imagine why.

A few months ago I posted an observation that my (fiber-based) prints appeared
less sharp when wet than when dry and speculated that it might be due to 
the paper swelling when wet.  Someone posted that this might be true but
that the paper would only swell in thickness, not in width or length.  I've
now found that to be untrue, at least for Oriental Seagull VC Select (double-
weight).

Last night, for reasons too complicated (and silly :-) to go into here, I tried 
to take a piece of 8x10 paper from the holding bath and re-insert it in my 
enlarging easel (Saunders LPL Universal 11x14).  It wouldn't fit in the slot 
intended for 8x10 paper.  It was too long for the slot.  Huh????  It fit when 
I exposed it.  ???

So I measured the paper.  It was now 10 9/32 inches (26.1 cm) long.  I 
measured several pieces of dry paper.  10 inches exactly (25.4 cm).  So the 
paper had expanded 9/32 inches  or .7 cm. in its longest dimension.  Realizing 
that the paper in the holding bath had been wet for ~45 minutes, I measured a 
piece of paper immediately after the developing cycle - 2 minutes in developer,
20 seconds in stop-bath, 1 minute in rapid-fix - and found it to measure 
10 1/8 inches (25.7 cm).  So in summary:

  dry:                              10"      (25.4 cm)
  after ~3.5 minutes in solutions:  10 1/8"  (25.7 cm)
  after ~45 minutes in solutions:   10 9/32" (26.1 cm)

Don't ask me what good this knowledge can do but I thought I'd offer this for
trivia buffs to use to stuff their heads even more full.  :-)  And I'm 
somewhat astounded that the dimensions change that much.

Barry




-- 


|----------------------------------------------------------------------------|
| Barry Sherman, Amdahl Corp. | "It's much easier to go to exotic places and | 
| bjs@uts.ccc.amdahl.com      |  capture spectacular scenes than to take a   |
|                             |  spectacular picture of a really boring      |
|                             |  green pepper". - Anthony Tse                |
|----------------------------------------------------------------------------|
| Amdahl, being a corporation, is a legal fiction.  Therefore it is incapable|
| of holding, let alone expressing, opinions.  Unfortunately, this has been  |
| said of me as well. (I.e.  My statments are mine, not Amdahl's.)           |
|----------------------------------------------------------------------------|
Newsgroups: rec.photo
From: robert@sys.sweden.dg.com (Robert Claeson)
Subject: Re: I GIVE FILM 'BOUT 7-10 MORE YEARS!!
Date: Fri, 11 Dec 1992 12:14:48 GMT
Distribution: na
Organization: Data General AB, Akalla, Sweden

In article <1992Dec8.003643.22336@pony.Ingres.COM>, daveb@Ingres.COM (Dave Brower, DBMS hack, [510] 748-3418) writes:

> Tried to buy a new vinyl LP lately?

Oh yes. I actually wanted it on CD originally, but it was only available
on vinyl. I don't regret that I bought it, though (my first vinyl record
in two years). The sound quality was remarkable and more alive than
anything I've ever heard on CD.
 
> Kodak notwithstanding, the equivalent of the CD player isn't here yet.
> But ten years later it will be as fun buying a roll of MumbleChrome or
> MumbleColor as getting a decent replacement needle is now.

I recently bought a replacement needle for the pickup of my record player.
No problems there. They are readily available.

As a side note, the largest resolution from the amateur Photo CD is
slightly over 6.2 million pixels per image. Compare that to the over
18 million pixels that a 24x36mm slide can hold. And what guarantee is
there that the current Photo CD formats will be supported, say, 20 years
from now? I think I'll stick with photo albums for awhile.

-- 
--------------------- This mass of gibberish came from ---------------------
         ____
        |    |               Robert Claeson
        |    |               Data General AB
 _______|____|_              Box 28
|    |    _    |_____        S-164 93 KISTA
|_/\ |   / \   |     |       Sweden
| \/ |   \_/   |   . |
|    |    |    |_____|       robert@sys.sweden.dg.com
|____|_________|-
Newsgroups: rec.photo
From: arora@arora.mentorg.com (Arora Amitabh @ PCB x3080)
Subject: Re: Is EOS 28-105 USM much better than 35-105 USM lens?
Date: Sat, 12 Dec 1992 01:19:01 GMT
Organization: Mentor Graphics Inc.
Keywords: 
Followup-To: 

In article <TJWU.92Dec11155934@e40-008-4.mit.edu>, tjwu@athena.mit.edu (Thomas J Wu) writes:
|> In article <1992Dec11.082024.27150@jarvis.csri.toronto.edu> acs@csri.toronto.edu (Alvin Chia-Hua Shih) writes:
|> >  In <1992Dec11.112251.11753@spider.co.uk> mikec@spider.co.uk (Mike Coren) writes:
|> >
|> >  >NO!!!  The USM lenses do NOT have IR correction marks on their distance scales.
|> >  >The USM lenses are meant to be used with the "Whisper Drive" cameras (Elan/100,
|> >  >Rebel II/1000N, A2E/5, etc), which can't be used with IR film due to the IR
|> >  >emitter/sensor in the film transport system.
|> >
|> >  I think you've extrapolated a little too much here.  USM was out *long*
|> >  before the Elan ever came out, and has advantages other than quiet
|> >  focusing.  (You know, high torque, manual focusing without flipping a
|> >  switch, etc.) All cameras previous to the Elan *can* use IR film and
|> >  USM together!
|> >
|> >  >I have the 28-105, and it ain't so.  It DOES have several indicators for
|> >  >distance on the distance scale, depending on what focal length the lens is
|> >  >zoomed to (28, 50, 70, and 105 I think).  Apparently, it's not a parfocal
|> >  >zoom.
|> >
|> >  Please check the instruction sheet that comes with your lens.  I'm willing
|> >  to bet that the marks you see *are* IR marks.  (At least on my 100-300 USM
|> >  the are!)
|> 
|> To settle this once and for all, the red marks *are* IR correction marks.
|> The 28-105 is most definitely a parfocal, unlike some other 28-105s
|> available.
|> 
|> >
|> >  >Mike
|> >
|> >  ACS
|> >  -- 
|> >   ___ ___ ___ ______________________________________________________________
|> >  |   |   | __|      Democracy is not a way of getting better solutions.     |
|> >  | - | --|__ |           It's just a way to spread the blame.               |
|> >  |_|_|___|___|______________________________________________________________|
|> >  Alvin_C._Shih____________________acs@csri.utoronto.ca______________________|
|> 
|> Thomas Wu
|> Internet:  tjwu@athena.mit.edu


What is a parfocal lens ?
Newsgroups: rec.photo
From: tjwu@athena.mit.edu (Thomas J Wu)
Subject: Re: Is EOS 28-105 USM much better than 35-105 USM lens?
Organization: Massachusetts Institute of Technology
	<1992Dec8.175929.26913@jarvis.csri.toronto.edu>
	<TJWU.92Dec8222550@vongole.mit.edu>
	<1992Dec11.112251.11753@spider.co.uk>
	<1992Dec11.082024.27150@jarvis.csri.toronto.edu>
Date: Fri, 11 Dec 1992 20:59:42 GMT

In article <1992Dec11.082024.27150@jarvis.csri.toronto.edu> acs@csri.toronto.edu (Alvin Chia-Hua Shih) writes:
>  In <1992Dec11.112251.11753@spider.co.uk> mikec@spider.co.uk (Mike Coren) writes:
>
>  >NO!!!  The USM lenses do NOT have IR correction marks on their distance scales.
>  >The USM lenses are meant to be used with the "Whisper Drive" cameras (Elan/100,
>  >Rebel II/1000N, A2E/5, etc), which can't be used with IR film due to the IR
>  >emitter/sensor in the film transport system.
>
>  I think you've extrapolated a little too much here.  USM was out *long*
>  before the Elan ever came out, and has advantages other than quiet
>  focusing.  (You know, high torque, manual focusing without flipping a
>  switch, etc.) All cameras previous to the Elan *can* use IR film and
>  USM together!
>
>  >I have the 28-105, and it ain't so.  It DOES have several indicators for
>  >distance on the distance scale, depending on what focal length the lens is
>  >zoomed to (28, 50, 70, and 105 I think).  Apparently, it's not a parfocal
>  >zoom.
>
>  Please check the instruction sheet that comes with your lens.  I'm willing
>  to bet that the marks you see *are* IR marks.  (At least on my 100-300 USM
>  the are!)

To settle this once and for all, the red marks *are* IR correction marks.
The 28-105 is most definitely a parfocal, unlike some other 28-105s
available.

>
>  >Mike
>
>  ACS
>  -- 
>   ___ ___ ___ ______________________________________________________________
>  |   |   | __|      Democracy is not a way of getting better solutions.     |
>  | - | --|__ |           It's just a way to spread the blame.               |
>  |_|_|___|___|______________________________________________________________|
>  Alvin_C._Shih____________________acs@csri.utoronto.ca______________________|

Thomas Wu
Internet:  tjwu@athena.mit.edu
Newsgroups: rec.photo
From: edmtl@taxus.uib.no (Thor Legvold)
Subject: Last inquiry for advice: Egypt foto tour
Organization: University of Bergen, Norway
Date: Fri, 18 Dec 92 10:59:27 GMT

Hi gang.  I'm going home for the holidays on wednsday (to Oslo),
and leave for Egypt on the 28th.

I'll be cheching news/mail on tuesday latest.

If anyone has anymore advice for photography (film/filters/
subjects, what to see, etc) for Egypt (6 days in Cairo + 1 in
Luxor)  I would appreciate  a mail or news followup.

Merry Christmas everyone.

Regards,
Thor Legvold                      This is the strangest life 
edmtl@alf.uib.no                  I've ever known.
University of Bergen              - Jim Morrison
Newsgroups: rec.photo,misc.wanted
From: erc@unislc.uucp (Ed Carp)
Subject: Re: Let me be your darkroom's trashcan
X-Newsreader: TIN [version 1.1 PL6]
Organization: Unisys Corporation SLC
Date: Fri, 11 Dec 1992 20:41:53 GMT

Scott Hanson (despair@netcom.com) wrote:

: I need the little things that make a darkroom more enjoyable, but am willing
: to clean diligently, put up with ugliness and unfashionable equipment, etc.
: 
: What I am looking for: trays, tongs, sponges, squeegees, tanks, reels, grain 
: focuser, safelight filter, anything else.  I am willing to pay for this, but
: not a lot.  I am tempted to raid dumpsters behind labs, things are unbelievably
: shabby around my "darkroom."

If you can find a buyer for one of the more popular enlargers, the ads in the
back of popular photo mags have so-called "package deals", where you pay for
an enlarger and all the darkroom "stuff" that comes with it.  Basically, most
things you need to get started.  Order the stuff, sell the enlarger, and
volia -instant darkroom supplies. :)
-- 
Ed Carp			erc@apple.com, erc@saturn.upl.com	801/538-0177

Who and what would you be if you went beyond your deepest fears?
Newsgroups: rec.photo
From: "guillermo penate" <guillermo.penate@canrem.com>
Subject: e-mail not working?
Reply-To: "guillermo penate" <guillermo.penate@canrem.com>
Organization: Canada Remote Systems
Distribution: rec
Date: 17 Dec 92 01:27:16 EST

Hi Al,
       Just checking if you have sent any E-MAIL message to me.  It
seems to me that function is not working properly on the BBS I connect
to.   I am here, waiting for as long as it takes.

Please Let me know If you got this message, either by E-MAIL or by
posting a message to this news group.

Regards,

Guillermo
--
Canada Remote Systems  - Toronto, Ontario
World's Largest PCBOARD System - 416-629-7000/629-7044
From: sh09@ns1.cc.lehigh.edu (STEVEN HIGGINS)
Newsgroups: rec.photo
Subject: Re: Does Minolta X-700 allow shutter priority auto mode
Date: 16 Dec 92 21:04:46 GMT
Organization: Lehigh University

In article <fourie.27@odie.ee.wits.ac.za>, fourie@odie.ee.wits.ac.za (Andre Four
ie) writes:
>I have purchased a 2nd hand Minolta X-700 camera. The camera seems to
>support only aperture priority "A" and program "P" modes as well as a manual
>mode. Somebody told me that the camera can be used in shutter priority mode
>as well. Since the aperture is controlled by the camera in the program mode
>this appears to be feasible. Does anybody have more information on this. I
>shall also appreciate any other useful information on this model of camera.

    Andre,

    The X700 does _NOT_ support true shutter priority operation.  The Program
    mode is weighted to use faster shutter speeds than some other early
    program cameras, like the AE-1P, but that's it.  BTW, if you operate the
    camera in Program with the lens opened up a bit, say maybe f/11,  it
    further biases faster shutter speeds.  The "P" will blink, but the camera
    will work properly as long as the shutter doesn't have to exceed 1/1000.
    You might try that.

    Regards,
-- 

~Steve
sh09@lehigh.edu
Newsgroups: rec.photo
From: jchen@wind.bellcore.com (Jason Chen)
Subject: Re: Outgrowing your gear 
Reply-To: jchen@ctt.bellcore.com
Organization: Bell Communications Research
Date: Thu, 17 Dec 92 21:25:49 GMT

>>When I decided to upgrade to AF, Minolta had left me in the dust
>>by obsoleting all of my equipment.   I moved to the only manufacturer
>>who had maintained upgradability throughout their line of lenses,
>>flash, and cameras.   Nikon.

First, Nikon is not the only one. Pentax is another one.
Secondly, Pentax has done a better job.

Jason Chen