HDTenEightyP/NetNews huggingface dataset:
From: schumann@msus1.msus.edu
Newsgroups: rec.photo
Subject: Re: Pre-exposure to implement Zone System??
Date: 28 Sep 92 16:58:24 -0600
Organization: Minnesota State University System

In article <1992Sep24.234031.17143@odin.corp.sgi.com>,
donl@glass.esd.sgi.com (donl mathis) writes:
> 
> In article <1992Sep25.011352.1@cc.curtin.edu.au>,
> zrepachol@cc.curtin.edu.au (Paul Repacholi) writes:
> 
> |> I would cringe at the idea of trying to fiddle with colour development to
> |> control contrast. 3 times yet... But, I have often wondered about
> pre-flashing.
> |> Could be done on a frame by frame basis, even with 35mm, and for
> colour could
> |> be of variable colour balance as well. Anyone know of any work in this area?
> 
> This appears to me to be the most promising approach to handling
> transparency contrast, and has the added benefit of improving the shape
> of the curve.  I don't know of anyone who's worked it all out, though.
> The problem boils down to the mechanics of consistent preflashing, and
> hopefully on demand in the field once you know how much you need.
> After that, a little testing, and you're done!
> 
> As to changing the color balance -- scary!  Good luck!
> 

Ansel Adams briefly discusses the possibility of using pre-exposure to 
control contrast with color materials in his book _The Negative_.  (I
probably wouldn't have remembered this were it not for my involvement
in that other thread on the silver content of film, which developed
into exchanges on a color zone system, Fred Picker, research
methodologies, and a variety of related topics, which forced me to go
back and re-read Ansel Adams's books. :-) ) 

As I recall, he recommends a pre-exposure to Zone II.  But anyone who 
is interested should go back and check _The Negative_ in the section 
where he briefly covers the color Zone System (it begins around page 
95) to be sure of his recommendations.

If anyone tries this, I'm sure there are people on the net who would 
be interested in the results.
--
   Paul L. Schumann, Ph.D.           |  VAX:  IN%"schumann@MSUS1.MSUS.EDU"
   Professor of Management           |  Office Phone:       (507) 389-5349
   Mankato State University          |  Secretary's Phone:  (507) 389-2966
   Mankato, MN   56002-8400          |  Fax Number:         (507) 389-5497

Newsgroups: rec.photo
From: tab62@isuvax.iastate.edu (   )
Subject: For Sales: Canon EF lenses
Reply-To: tab62@isuvax.iastate.edu
Organization: Iowa State University, Ames, Iowa
Date: Mon, 5 Oct 1992 02:12:05 GMT

I have the following Canon EF (for EOS cameras) lenses for sale:

1. Canon EF 75-300mm/4-5.6 zoom lens
	- about 1 year old
	- mint condition 
	- asking for $160/obo

2. Canon EF 35-105mm/3.5-4.5 zoom lens
	- about 1 year old
	- mint condition
	- push/pull zooming 
	- included Canon EW-68B lens hood
	- asking for $160/obo

Both in US funds and free shipping within continent of US.

Thanks

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Chong Siak     Iowa State University  Ames  Iowa   tab62@isuvax.iastate.edu                      
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Newsgroups: rec.photo
From: zrepachol@cc.curtin.edu.au (Paul Repacholi)
Subject: Re: Experience with Canon EF 70-210USM
Organization: Curtin University of Technology
Date: Mon, 5 Oct 1992 17:53:12 GMT

In article <BvIFsn.KuJ@acsu.buffalo.edu>, tklai@acsu.buffalo.edu (Tobysze K. Lai) writes:
> So, what's the f/ stop reading when the focal length of the 70-210 USM
> reaches 100mm?  Still 3.5?  
> 
No. It is down to f4 at about 95mm. The other thing, Canon skimped on the length
of the blades of the iris, so untill f8 the ends protrude into the apature and
increase difraction.

~Paul

Newsgroups: rec.photo
From: mkuhn@news.weeg.uiowa.edu (Martin W Kuhn)
Subject: Re: Pentax Auto 110 info wanted
Organization: University of Iowa, Iowa City, IA, USA
Distribution: usa
Date: Wed, 30 Sep 1992 18:24:40 GMT

In article <1992Sep29.223344.24363@cbnewsm.cb.att.com> ka1gt@cbnewsm.cb.att.com (robert.m.atkins) writes:
>(4) (I have heard that) Film flatness in 110 "cartridges" is not up to the
>standard of film flatness in most 35mm cameras, where you have a pressure
>plate holding the film flat (or a vacuum if you have lots of money and a
>Contax!). Thus the negatives (slides) may not be as sharp as they could be.

Actually, film flatness in the 110 cartrige isn't too much of a problem.
However, 126 cartriges were pretty nortorious for film flatness problems,
and Kodak pretty much solved these problems in designing the 110 cartrige.
In any case, it probably still isn't as good as having a real pressure
plate like with 35mm and roll film.
 
                                --Marty
From: duane@cbnewsj.cb.att.com (duane.galensky)
Newsgroups: rec.photo
Subject: Re: Next Nikon camera: An AF interchangeable lens rangefinder?
Date: 28 Sep 92 14:16:52 GMT
Distribution: usa
Organization: AT&T

In article <13350@texsun.Central.Sun.COM> dbernard@thewho.Central.Sun.COM writes:
>
>
>
>
>>Believe it or not, Nikon is in process of producing a new professional
>>rangefinder camera which will do autofocus with all Nikon AF lenses, and
>>will accept all manual Nikon lenses. Following are some primary information
>>about the camera, it's up to you to believe or disbelieve the information.
>I
>This is an interesting concept, but I gotta wonder how it would sell?
>
>* A traditional RFDR advantage is lightness, quietness, quickness, but this
>	camera sounds like it would have autoadvance, need battery storage
>	for the AF and advance etc.  In short, it sounds like a bridge camera
>	that would take interchangeable lenses, which leads me to my second
>	question...
>
>* If I have to buy Nikkor SLR lenses anyway (retrofocus design for wide angle,
>	room for autoaperture, motors, etc., and thus much larger than comparable
>	traditional RFDR lenses), why not just buy an SLR?


i agree 100%...i can't understand what possible purpose having
a non-through-the-lens viewfinder would have unless one gains
something in terms of weight, bulk, quiet-ness, or perhaps
higher quality optics.  AF rangefinder sounds contradictory to me.

oh well...it wouldn't suprise me...after all, they just announced
the N90 for reasons i can't understand...so much for the
credibility of my judgement in these matters...

duane
From: ka1gt@cbnewsm.cb.att.com (robert.m.atkins)
Newsgroups: rec.photo
Subject: Re: Pentax Auto 110 info wanted
Date: 29 Sep 92 22:33:44 GMT
Article-I.D.: cbnewsm.1992Sep29.223344.24363
Distribution: usa
Organization: AT&T

In article <1992Sep29.161248.4977@hfsi.uucp>, bower@hfsi.uucp (Michael Bower Comm. ) writes:
> Rec.photo netters:
> 
> I have a chance to get a Pentax Auto 110 system here in my area.  This is
> a 110 camera that is basically a miniature SLR with several lenses.
> 
> Can anybody shed any light on this setup.  Is it a good camera? bad
> camera? whatever?  I know the limitations of 110 film but aside from
> that, it looks like a nice camera for keeping in ones pocket.  (It 
> is bulkier than the MINOX camera but the film is slightly larger
> and easier (and cheaper) to get.
> 
> Any thoughts will be appreciated.
> Thanks in advance.

A nice camera, but severely limited by:

(1) The availability of different film types in 110 size. No problem if all
you want is Kodak (or Fuji) 100 or 200 speed print film, but a real problem
of you want slide film, or high speed or B&W film.

(2) A lack of high quality photofinishers working in the 110 format. There
may be some somewhere, but I don't know of any. No problem if you do your
own developing and printing, or you don't need high quality work.

(3) The size of the 110 negative. 35mm is small enough, 110 is tiny.

(4) (I have heard that) Film flatness in 110 "cartridges" is not up to the
standard of film flatness in most 35mm cameras, where you have a pressure
plate holding the film flat (or a vacuum if you have lots of money and a
Contax!). Thus the negatives (slides) may not be as sharp as they could be.

Sure is a cute camera though.

===============================================================
Bob Atkins  AT&T Bell Labs  email (direct)  att!clockwise!rma
===============================================================
Newsgroups: rec.photo
From: tab62@isuvax.iastate.edu (   )
Subject: Re: Experience with Canon EF 100-300mm f/4.5-5.6 USM
Reply-To: tab62@isuvax.iastate.edu
Organization: Iowa State University, Ames, Iowa
Distribution: na
Date: Tue, 6 Oct 1992 02:04:02 GMT

In article <92279.203505IO92112@MAINE.MAINE.EDU>, IO92112@MAINE.MAINE.EDU writes:
>
>In article <19920ct5.201357.5558@cbnewsm.cb.att.com>, ka1gt@cbnewsm.cb.att.com
>(Robert. M. Atkins) writes:
>
>>unless my memory is fading (which it might be), I thought that the EF75-300
>>had a ROTATING zoom control, not a push-pull control (like the 100-300L)
>>Given this, it is hard to see how the zoom would slide in the vertical
>>position. The push-pull zooms (from most lens makers) are prone to this
>>"zoom creep" effect, but I've never seen it in lens which zooms via a
>>rotating ring. Maybe the "gearing" on these zooms is now so low that creep
>>is possible. If you say it is there, then I believe you.
>
>You are right. The Canon EF 75-300mm is the rotating ring zoom unlike
>EF 100-300mm USM with push/pullring. However, the zoom rings in both
>zoom so loose that whenever the lenses are in verticle position the
>zoom rings slide down. I own a EF 100-300 USM. Before I bought this
>lens, I went to photo shop to play both lenses. Both of them have the
>loose ring problem. I thought the lenses I played in the store were
>defect and wear down. But the saleperson picked up the lensfrom other
>packages, all of them were the same. Although I am really satified with
>the zoom ring, I got the EF 100-300mm USM through mail-orderfrom B&H
>because of its fast and quiet focus, and good optical quality.
>I personally don't own a EF 75-300mm zoom. From my limited experience
>in the photo store, the zoom ring DO slide down when the lens are in
>verticle position. Maybe other 75-300mm owner can share their experience.

It never happened to my lens.  I owned this lens about a year.                                                                           
>
>> ==============================================================
>> Bob Atkins  AT&T Bell Labs  email (direct)  att!clockwise!rma
>> ===============================================================
>
>G a r r y -
>Internet: io92112@maine.maine.edu
>Bitnet:   io92112@maine.bitnet
>Voice:1-207-581-3795
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Chong Siak     Iowa State University  Ames  Iowa   tab62@isuvax.iastate.edu                      
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
From: yuenpe@mentor.cc.purdue.edu (Peter Yuen)
Newsgroups: rec.photo
Subject: Re: mailorder experience needed
Date: 4 Oct 92 04:18:39 GMT
Organization: Purdue University Computing Center

In article <29SEP92.12507267.0055@vmxa.polymtl.ca> DH02@polytec1.polymtl.ca (DH02) writes:
>In article <27688@nntp_server.ems.cdc.com> mtoms@ems.cdc.com (Mark Toms) writes:
>>
>>The word on the net seems to be 'avoid Smile Photo', though.
>>
>And not to mention our friends (!!) CAMBRIDGE and AAA......
>Don't even be seen anywhere near these stores!!!!!!!
>
>-Tamal Ghosh
>
>Disclaimer:  I DON'T WORK FOR ANY CAMERA STORE, I NEVER DID AND I NEVER
>             WILL......but if I don't get a job after my phd, maybe....

Yes, 
I wanted to order a Sunpak Auto 544 Flash this past summer.
I called Cambridge to varify their price of $119 I believe.  The guy I spoke
to said that the bracket, battery holder, and pc cord were extra.  The total
with postage and handling would be about $175.
So I called up Camera World of Oregon and enquired about the same flash.
They gave me a price of $139 total with all the accesseries that came with it,
no stripping.  The people there were quite nice, except the only problem
I had with them was that they didn't inform me that the flash was on backorder,
so I ended up getting the Auto 555.


-- 
|    Peter Yuen                                 |  ____                        |
|    E-Mail:  yuenpe@mentor.cc.purdue.edu       |   |__|   PURDUE UNIVERSITY   |
|         NW 496 Wiley Hall, Purdue University  |  _|_                         |
|         West Lafayette, Indiana 47906         |            GO BOILERS!       |
From: eugene@briar.lle.rochester.edu (Eugene Kowaluk)
Newsgroups: rec.photo
Subject: Zone System & Gossen Ultra Spot
Date: 1 Oct 92 20:38:16 GMT
Organization: UofR Laboratory for Laser Energetics


Has anybody worked with the Ultra Spot's zone function?

If so, would you recommend this spotmeter over the others because of this
function?

Thanks.


eugene kowaluk
Newsgroups: rec.photo
From: lswab@x400gate.bnr.ca (Lyndon Swab)
Subject: Help with Pentax Spotmeter V
Organization: Bell-Northern Research Ltd.,
Distribution: rec
Date: 02 Oct 92 14:22:09 GMT

Hi:

     I just picked up a used Pentax Spotmeter V, and was hoping to
gain some wisdom from anyone else who may also have one.

     On the bottom of the wheel (on the side), there are several
markings.  One is a big arrow.  This seems to match the 18% reading of
my other cameras - fine.  There is also a scale marked from 1 to 10,
and spaced logarithmically.  The arrow points to the middle of the
scale.  Just what is the significance of this scale, and how would I
use it?  Finally, there is a marking of 1:32 which seems to label the
big arrow.  What does it mean?

Thanks,
--
Lyndon Swab     lswab@bnr.ca, (613) 763-7165, ESN 393-7165
From: volker@nsc.nsc.com (Volker Soffel)
Newsgroups: rec.photo
Subject: Re: DEVELOPING ONLY
Keywords: DEVELOPING ONLY
Date: 28 Sep 92 20:05:53 GMT
Organization: National Semiconductor, Santa Clara

In article <1992Sep27.142708.26787@doug.cae.wisc.edu> qawi@cae.wisc.edu (Imaduddin Qawi) writes:
>
>Can anyone post the address of any processing lab which offers developing of
>films. 
>I usually photograph the same subject with multiple settings of exposures and
>do not want to get prints of every negative.
>
>Thanks.
>Qawi
Along the same line: Where could you get slide film developed WITHOUT mounting
and without paying the SAME price as with mounting (most places will develop
without mounting but will charge you the same price as with mounting, which
I think is ridiculous)

-- 
Volker Soffel			National Semiconductor Corporation
volker@nsc.nsc.com		Embedded Control Division Applications
(408) 721-4360			Santa Clara, CA95052
From: jspirer@rain.next.com (Jeff Spirer)
Newsgroups: rec.photo
Subject: B&H In-Store Experience (Positive)
Date: 29 Sep 92 17:20:21 GMT

I was in NYC last week and went to B&H.  This was my first experience with  
them (I have used Adorama for most of my mail order needs, but will switch  
now) and I was happy with the service.  The salesman spent a very long  
time with me over some very small items even though the store was  
reasonably busy.  Everything I wanted was in stock, even weird accessories  
for Olympus cameras.  I would recommend this place to anyone.

Newsgroups: rec.photo
From: geoff@pmafire.inel.gov (Geoff Allen)
Date: Thu, 1 Oct 92 15:12:52 GMT
Organization: Roller Coaster fanatic with no hope for a cure
Subject: Re: More than 37 exposures/roll with 8008s?
Summary: 
Followup-To: 
Organization: Roller Coaster fanatic with no hope for a cure
Keywords: 

glp@tfs.com (Gregory Pease) writes:
>In article <3830318@hpldsla.sid.hp.com> tonya@hpldsla.sid.hp.com (Tony Arnerich) writes:
>>mas@mipl8.jpl.nasa.gov (Marc Sarrel) writes:
>>[stuff about 35, 36, 38 frames deleted...]
>>
>>Your problem restated: "What's so sacred about 36 frames anyway?"
>
>Why, isn't it obvious?  36 is half of 72, which is half of 144, which 
>is 12 squared.  ;)

Yes, but 35 is half of 70, which is 10 times 7.  Now 10 is the base of
our number system, and 7 is the biblical number of perfection and
completion.  We were talking *sacred* weren't we?

;^)

Geoff ``Couldn't resist'' Allen

-- 
Geoff Allen          \  A fanatic is one who can't change his
uunet!pmafire!geoff   \  mind and won't change the subject.
geoff@pmafire.inel.gov \		-- Winston Churchill
From: lenehanj@ul.ie
Newsgroups: rec.photo
Subject: Re: Anyone using the Pentax P30N/P30T
Date: 1 Oct 92 19:59:39 GMT
Organization: University of Limerick, Ireland

In article <1992Sep29.160604.1@summer.chem.su.oz.au>, piton_m@summer.chem.su.oz.au writes:
> G'day, Shooters:
> 
> Well, I just had to ask. There's been alot of talk regarding AF SLRs and
> old manual cameras like the Pentax K1000 but little discussion about more
> recent additions to the manual camera market.  Does anyone use the new
> Pentax manual cameras P-30T and/or P-30N?  

I have had a p30t for 10 months now and have found it to be an
excellent camera. It's sturdy ( I dropped it ) and versatile. The auto
exposure works quite well once you get used to the usual problem areas.
The controls are easy to use and well laid out - the only problem there is
if you switch it on in a hurry you might slide it into self-timer mode !

It's main drawbacks as far as I am concerned are it's weight (coupled
with a 28-80 lens it's about 2lb), lack of manual ISO setting and 
provision for motordrive.

For the price I would recommend it...

Des O'Donoghue c/o lenehanj@ul.ie    ( University of Limerick, Ireland )
Newsgroups: rec.photo
From: al@qiclab.scn.rain.com (Alan Peterman)
Subject: Re: Lens Focusing (was Re: lens tests..)
Organization: SCN Research/Qic Laboratories of Tigard, Oregon.
Date: Wed, 30 Sep 1992 15:18:13 GMT

In article <3830317@hpldsla.sid.hp.com> tonya@hpldsla.sid.hp.com (Tony Arnerich) writes:
>
>I have yet to see a 35mm camera (besides auto-load P&S) where there is
>no access to the image plane. I have used the knife-edge technique on
>the film rails on many occasions in the last 20 years. As donl says,
>open the camera back.

Well there's Leica rangefinders....The bottom comes off, but access
to the film plane is pretty poor.  

-- 
Alan L. Peterman                                 (503)-684-1984 hm & work
                       al@qiclab.scn.rain.com
It's odd how as I get older, the days are longer, but the years are shorter!
From: johnc@endor.harvard.edu (John Chervinsky)
Newsgroups: rec.photo
Subject: Press Camera Questions...........................
Date: 4 Oct 92 16:59:16 GMT
Article-I.D.: das.1992Oct4.165916.6344
Distribution: na
Organization: Aiken Computation Lab, Harvard University



Hi,

At a rummage sale recently, someone was selling a Speed Graphics 4x5
camera.  Although I did not buy it (slow speeds were off, lens didn't
look good ect..), it did pique my interest. I have a few questions:

In the 4x5 format, are there any models of these cameras that are
considered to be superior?

Do any models allow lens tilt about the horizontal axis?

What lens/shutter system is considered to be good?

Do any of these cameras have coupled rangefinders other than the ground
glass?

As silly as it may sound, my goal is to use such a camera for street
photography and environmental portraits.  Is this camera too cumbersome?

How much should I pay for one of these babies?  Other than the obvious
what should I watch out for?

Any words of wisdom or information sources would be greatly appreciated.

Thanks!

   
   John Chervinsky
Newsgroups: rec.photo
From: dougb@comm.mot.com (Doug Bank)
Subject: Re: PhotoCD services
Reply-To: dougb@ecs.comm.mot.com
Organization: Motorola Land Mobile Products Sector
Date: Fri, 2 Oct 1992 19:39:35 GMT
Keywords: Kodak, Kodalux, PhotoCD

In article <1992Oct2.115927.7889@kodak.kodak.com>, axman@acadia.Kodak.COM (Mike Axman) writes:
|> In article <5265@rosie.NeXT.COM>, gary_crum@next.com (Gary Crum) writes:
|> >
|> ---stuff about Kodalux overcharging deleted----
|> 
|> When there's some competition in the marketplace we'll hopefully see these
|> prices drop considerably.

Wolf Camera has bought (at least) one of these setup's, and is promoting
the service actively.  Their prices are in line with Kodalux's, though.

-- 
Doug Bank                       Private Systems Division
dougb@ecs.comm.mot.com          Motorola Communications Sector
dougb@nwu.edu                   Schaumburg, Illinois
dougb@casbah.acns.nwu.edu       708-576-8207                    
Newsgroups: rec.photo
From: jackson@ponder.csci.unt.edu (Bruce Jackson)
Subject: Re: former nikon owner
Organization: University of North Texas, Denton
Date: Sat, 3 Oct 1992 15:44:14 GMT

>From article <1992Oct1.042040.1@cc.curtin.edu.au>, by zrepachol@cc.curtin.edu.au (Paul Repacholi):

>> In article <1992Sep30.162445.6981@galileo.cc.rochester.edu>, eugene@briar.lle.rochester.edu (Eugene Kowaluk) writes:

>>> But too late, after 15 years with Nikon I switched to Canon last month.

In article <1992Oct3.055037.19832@netcom.com> hchong@netcom.com (Hoi Chong) writes:

>Are you sure you can learn to focus the other way (Nikon focus in reverse
>direction in the turn of the focus ring) after 15 years?  Or is your new
>camera AF? 

I always hated the fact that different camera manufacturers do not
agree on things like this.  I used to switch between a Cannon Ftb and
a Nikon FM2 which caused me to have to constantly think which way to
turn the focus and aperature rings.

Anyway, my brother took back his Cannon and his lenses so I only
deal with my Nikon now.

Bruce  -  jackson@cs.unt.edu

Newsgroups: rec.photo
From: nuscss1@vms1.iscs.nus.sg (Vax BULLET-IN-Board SysOps)
Subject: Re: EOS 630 CFs - Help!
News-Software: VAX/VMS VNEWS 1.41    
Organization: National University of Singapore Dept. of Computer Sc.
Date: Fri, 25 Sep 1992 20:52:00 GMT

In article <1992Sep23.123246.24857@jarvis.csri.toronto.edu>, acs@csri.toronto.edu (Alvin Chia-Hua Shih) writes...

>+--+-----------------+---------------------------+---------------------------+
>|7 | Manual focus    | Allows manual focus       | Manual focus adjustment   |
>|  | operation with  | adjustment after auto-    | possible by setting focus |
>|  | USM lenses.     | focus without prior set-  | mode switch.              |
>|  |                 | ting.                     |                           |
>+--+-----------------+---------------------------+---------------------------+
> 
>If you have any other 630 questions, feel free to mail me.

	ah...just what i needed desperately - a EOS 630 user.
	I have a big puzzling question that I really really hope you
	can help me with. The darn salesman couldn't.

	Its to do with CF7. After setting it, i am *supposed* to be able
	to manually focus the lens, even if the lens is in AF mode. Correct ? 
	Well, I just can't do it. The focusing ring just won't
	budge. It's a 35-80 f/4-5.6 USM lens (the same type that is 
	included with the EOS 1000FN/Rebel IIs kit). I tried to wait till
	the camera has finished/given up its AF, but still no go.
	Am I missing something ?
	
	HELP ! Thanx in advance.

> 
>Alvin_C._Shih____________________acs@csri.utoronto.ca______________________|