Talk About Network

Google


Register and Login
Nick
Password
Register create new account Sign up is FREE and you can post replies, new topics, bookmark posts and more!
Recover lost password


Photography > Dark Rooms > Re: Basic quest...
Latest [ Topics | Posts ] Archive Post A New Topic Post a Reply
<< Topic < Post Post 6 of 11 Topic 4075 of 4227
Post > Topic >>

Re: Basic question about contrast and gamma

by ____ <internetphobic@[EMAIL PROTECTED] > Feb 24, 2008 at 02:08 PM

In article 
<55c237f9-dc18-4ff2-8f02-5a00f838164a@[EMAIL PROTECTED]
>,
 Monica Schulz <monica.schulz@[EMAIL PROTECTED]
> wrote:
 
> On the risk of beeing pu****ng I must still insist on the relation****p
> between neg contrast and paper contrast.

Neg contrast= 1.45 max
Paper contrast .85 < 

Gamma is not a good indicator of true paper capability try .85 or if you 
must use film gamma subtract .20 from the bottom and top of the 
Characteristic curve your using, use a shoulder around 1.45 or less more 
like 1.25


> As we agree that both must balance to about 1 and color negative film
> is normally developd to about 0,6, the paper should show gamma of 1,7.
> But almost all color printing papers have gamma values far in excess
> of 2. So how does the steeply raised contrast of the print fit into
> your above statement? Does the contrast have to be raised that much so
> offset the unavoidable flare? If thatīs true paper contrast cannot be
> calculated by simply using the reciprocal of the neg. Maybe thatīs all
> what blocked me from recognizing the true connection?!
> 
> Best regards!
> Monica Schulz

Flare should not be an issue when using a modern lens if using something 
older producing flare you should replace it with a modern Apo lens.

-- 
Reality is a picture perfected and never looking back.
 




 11 Posts in Topic:
Basic question about contrast and gamma
Monica Schulz <monica.  2008-02-21 15:33:56 
Re: Basic question about contrast and gamma
John <use_net@[EMAIL P  2008-02-21 17:51:57 
Re: Basic question about contrast and gamma
David Nebenzahl <nobod  2008-02-21 17:52:32 
Re: Basic question about contrast and gamma
"Richard Knoppow&quo  2008-02-22 01:57:55 
Re: Basic question about contrast and gamma
Monica Schulz <monica.  2008-02-24 08:41:00 
Re: Basic question about contrast and gamma
____ <internetphobic@[  2008-02-24 14:08:27 
Re: Basic question about contrast and gamma
"Richard Knoppow&quo  2008-02-24 14:29:05 
Re: Basic question about contrast and gamma
"Richard Knoppow&quo  2008-02-24 14:11:49 
Re: Basic question about contrast and gamma
Monica Schulz <monica.  2008-02-25 04:04:32 
Re: Basic question about contrast and gamma
Monica Schulz <monica.  2008-02-25 15:43:08 
Re: Basic question about contrast and gamma
"Richard Knoppow&quo  2008-02-26 18:28:40 

Post A Reply:
  Go here to Signup

AddThis Feed Button


About - Advertising - Contact - Frequently Asked Questions - Privacy Policy - Terms of Use - Signup

Contact
tan12V112 Sun Jul 20 3:45:43 CDT 2008.