Suggestions on 4x5 B&W film with good reciprocity characteristics

[Harley Goldman]

Acros for my money if reciprocity is your biggest concern in an all-around outstanding film.

[Leigh]

If you don't want the t-grain straight-line look (Tmax, Acros, Delta)...

Don't group Acros in with the t-grain films.

It's totally different, and far superior.

- Leigh

[Taija71A]

In the past I have used Acros...

____

I am pretty sure (*Like almost everyone else:-), that the 'OP' is well aware... That Acros (and Efke PL25 ) were the top two 'contenders' -- With respect to Reciprocity Characteristics!

I believe... That he is now looking for thoughts? on what the other 'Next best' films are -- In this respect...
--
Regards,

-Tim.
________

[Regular Rod]

Glad to be back, been away from LF for a while and low on film supplies. I am looking for suggestions on B&W film with good reciprocity. In the past I have used Acros and Efke PL25 with fantastic results. My supply of Efke is all but gone and while I can get Acros, it is expensive and with Fuji, well, I figured I would send out a feeler to see what you guys are using. I had heard that Delta 100's reciprocity is far better that Ilfords sheets say so I have a box coming for testing. Thoughts on others?

Regards,
Ron

What do folk mean by "good reciprocity characteristics"?

richard

[Leigh]

What do folk mean by "good reciprocity characteristics"?

If you'd read the thread before you post, you'd find that I gave that information in post #9:
"Fuji Acros blows everything else out of the water.
NO compensation required out to 120 seconds, then
only 1/2 stop required out to 1000 seconds."

- Leigh

[Taija71A]

What do folk mean by "good reciprocity characteristics"? richard

____

Richard, simply put... 'Film Reciprocity' might be explained as follows:


"When the light reaching photographic film is dim enough for the meter to suggest times 'of a second or longer', the reciprocal relationship between light intensity and exposure time breaks down.

As a result, (*Exposure-- 'Italics Added') times must be increased to obtain the desired density in shadow areas".
~~ Howard Bond. ~~

http://phototechmag.com/black-and-wh...y-howard-bond/


For a further explanation... You may also want to examine the following articles:


http://filmphotographyproject.com/co...rocity-failure
http://en.wikipedia.org/wiki/Recipro...photography%29


Richard, don't worry about those forum members... Who always have 'Nothing Nice' to say!


"My mother always told me if you don't have anything nice to say, don't say it".
~~ Donald Faison ~~


Regards,

-Tim.
________

[Taija71A]

>> TMY-2. I don't think it's clinical. It's perfection.

____

Perfection? Hmmmm ???
Say it isn't so Andrew...

Andrew, it would 'appear' to me... That many of your latest photos (as posted on Flickr)... Were taken with HP5 Plus and not TMY-2?

If TMY-2 is 'Perfection'... You certainly would not then ever need to use HP5 Plus!
Just saying... Care to explain your original statement further?

And Yes... Like the 'OP'... *I* still think that TMY-2 is 'Clinical'.

____

You do need to invest some time into how to best use it, though.

____

Sounds a little bit 'condescending' Andrew! (*At least to me it does)...
Andrew, are you saying that the 'OP' did NOT invest the 'time' into using TMY-2

or

...that he doesn't know -- 'How to best use it'?

--
Nice Portfolio BTW!

Regards,

-Tim.
________

[Regular Rod]

If you'd read the thread before you post, you'd find that I gave that information in post #9:
"Fuji Acros blows everything else out of the water.
NO compensation required out to 120 seconds, then
only 1/2 stop required out to 1000 seconds."

- Leigh

Oh I read the thread alright but am puzzled by what is deemed to be good and bad reciprocity characteristics. Surely as long as the reciprocity failure is actually known and can be taken into account then it is fine, neither good nor bad, just reciprocity failure?


RR

[Regular Rod]

____

Richard, simply put... 'Film Reciprocity' might be explained as follows:


"When the light reaching photographic film is dim enough for the meter to suggest times 'of a second or longer', the reciprocal relationship between light intensity and exposure time breaks down.

As a result, (*Exposure-- 'Italics Added') times must be increased to obtain the desired density in shadow areas".
~~ Howard Bond. ~~

http://phototechmag.com/black-and-wh...y-howard-bond/


For a further explanation... You may also want to examine the following articles:


http://filmphotographyproject.com/co...rocity-failure
http://en.wikipedia.org/wiki/Recipro...photography%29


Richard, don't worry about those forum members... Who always have 'Nothing Nice' to say!


"My mother always told me if you don't have anything nice to say, don't say it".
~~ Donald Faison ~~


Regards,

-Tim.
________

Thank you I am familiar with the characteristic but simply wanted to know what was the difference between good and bad.

As for forum members with poor manners, I'm used to that, you should see some of the exchanges on the very lightly moderated Viewpoint section of the flyfishing forum in the UK...



RR

[Leigh]

Oh I read the thread alright but am puzzled by what is deemed to be good and bad reciprocity characteristics.

OK. That's a reasonable question.

To my mind, the less "correction" required for any long exposure, the less the potential exposure error.

Long exposures are usually the result of some condition that differs from "normal".
It may be poor lighting, it may be use of very small aperture. Whatever. Something is different.

It would seem that adding a correction that varies over a narrow range of subject illumination
just complicates matters further, and adds another potential error when capturing the image.

I think that Acros, with no compensation required up to two minutes, and only 1/2 stop up to 16 minutes,
greatly enhances the likelihood of a proper exposure over a wide range of difficult subjects/situations.

And apologies for the previous terse response. I misunderstood your statement.

- Leigh