What about Rodinal 1:50 for 12 minutes? On the other hand if you over
develop -- say 20 minutes -- a ferri-cyanide solution could be used to
reduce the density. What do you think might be on the film -- something
valuable? In that case I'd cut off a short piece and try it first.
Don
P. J.
From: Paul Sorenson [EMAIL PROTECTED]
Date: 2006/08/04 Fri AM 01:24:54 GMT
To: Pentax-Discuss Mail List pdml@pdml.net
Subject: Re: A few questions on a Zeiss Ikon, an old film and a studio
lighting
peace
1) The F and M are to match the shutter timing to the peak output
of
On Aug 3, 2006, at 5:01 PM, Lasse Karlsson wrote:
1) Regarding the Zeiss Ikon Nettar front piece: You can see this red
little thingy set at F.
Now what does this red thing do there? What does F and M mean?
This is the flash synch setting. I believe M is for bulbs and F for
electronic
- Original Message -
From: mike wilson
Subject: Re: A few questions on a Zeiss Ikon,an old film and a studio
lighting peace
From: Paul Sorenson [EMAIL PROTECTED]
Subject: Re: A few questions on a Zeiss Ikon, an old film and a
studio lighting
peace
1) The F and M are to
From: Bob Shell [EMAIL PROTECTED]
Date: 2006/08/04 Fri PM 01:12:46 GMT
To: Pentax-Discuss Mail List pdml@pdml.net
Subject: Re: A few questions on a Zeiss Ikon,
an old film and a studio lighting peace
On Aug 3, 2006, at 5:01 PM, Lasse Karlsson wrote:
1) Regarding the Zeiss
Actually F is fast sync and M is medium sync. Fast sync bulbs need
to be fired about 5 milliseconds (not sure of the exact figure on F)
after the shutter is triggered, and medium sync fires at 20
milliseconds. These delays allow the shutter to be fully opened at the
time the M type sync bulb
William Robb wrote:
- Original Message -
From: mike wilson
Subject: Re: A few questions on a Zeiss Ikon,an old film and a studio
lighting peace
From: Paul Sorenson [EMAIL PROTECTED]
Subject: Re: A few questions on a Zeiss Ikon, an old film and a
studio lighting
peace
X is not the same as M. Although both can be used at low shutter speeds.
X fires the flash when the shutter is fully open, the others fire the
flash before the shutter is fully open.
The idea with M sync is that the flashbulb fires, the shutter opens, the
shutter closes, the flashbulb burns
So, who, besides me*, uses flashbulbs any more? But it would be nice if
people would not present their guesses as authoritative fact, but that
is the Internet for you grin.
*Aways accepting donations of large flashbulbs.
--
graywolf
http://www.graywolfphoto.com
This talk of Flash sync got me interested in using photo flash with
digital, so I googled it. This page turned up. Yes I was wrong M and X
sync aren't necessarily the same. But all this seems to be dependent on
the manufacture. I'm sure there were standards but they were probably
honored in
The problem is with the terminology. It is spoken of as delay, because
the shutter is tripped and a gear train delays the firing of the bulb
until the right point. But that point is before fully open. M bulbs are
normally fired 20ms before the shutter is fully open, F bulbs 5ms. So it
is
That is about what they go for today (old stock), so you would just
break even at that rate grin. I understand they still make 5's in
China, but no one seems to be importing them. They make the big ones in
Ireland and some folks import those, but they are more like $10 each.
--
graywolf
On Fri, Aug 04, 2006 at 09:12:46AM -0400, Bob Shell wrote:
On Aug 3, 2006, at 5:01 PM, Lasse Karlsson wrote:
1) Regarding the Zeiss Ikon Nettar front piece: You can see this red
little thingy set at F.
Now what does this red thing do there? What does F and M mean?
This is the flash
On Aug 4, 2006, at 9:52 AM, mike wilson wrote:
On Aug 3, 2006, at 5:01 PM, Lasse Karlsson wrote:
1) Regarding the Zeiss Ikon Nettar front piece: You can see
this red
little thingy set at F.
Now what does this red thing do there? What does F and M mean?
This is the flash synch setting.
One could use M with electronic flash as long as one uses a shutter
speed of 1/30 second or less. At slow speeds the shutter is open long
enough that 20ms makes no difference.
--
graywolf
http://www.graywolfphoto.com
http://webpages.charter.net/graywolf
Idiot Proof == Expert Proof
Hi all,
I would appreciate some help on a few things.
At the following adress there are a few pictures. They are self explanatory.
I got a few questions regarding what's in them.
http://www.photo.net/photodb/folder?folder_id=627921
1) Regarding the Zeiss Ikon Nettar front piece: You can see
Lasse Karlsson wrote:
Hi all,
I would appreciate some help on a few things.
At the following adress there are a few pictures. They are self explanatory.
I got a few questions regarding what's in them.
http://www.photo.net/photodb/folder?folder_id=627921
1) Regarding the Zeiss Ikon
On 8/3/06, Lasse Karlsson [EMAIL PROTECTED] wrote:
Hi all,
I would appreciate some help on a few things.
2) You'll see two pictures of one very old (exposed) film canister. a) Can
anybody estimate some dates for it's production? b) Any suggestions on what
process might get any pictures out
Lasse Karlsson wrote:
Hi all,
I would appreciate some help on a few things.
At the following adress there are a few pictures. They are self explanatory.
I got a few questions regarding what's in them.
http://www.photo.net/photodb/folder?folder_id=627921
1) Regarding the Zeiss Ikon Nettar
1) The F and M are to match the shutter timing to the peak output
of flashbulbs. F bulbs peak 5 milliseconds after ignition, while M
bulbs peak at 20 milliseconds. Each is of a relatively short duration,
but not as short as electronic flash. FP (focal plane)bulbs are a
horse of another
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