Who knows what L.D relates to?

[fadingaway1986]

I am trying to do my assignment for process control... and I have to find out what L.D on the control strips relates to...

They told us:

D-Min: relates to highlights
D-Max: relates to shadows
H.D minus L.D: relates to colour

and I need to know what L.D on its own relates to?

Ugh. I am thinking midtones, greys, contrast... I have tried googling it, but all I get is places to buy control strips.


stoopid assignment. LOL

 

[fadingaway1986]

Oh. I need this for both C-41 and RA... (although, I am still confused by the RA stuff, so I don't know if it is even relative in RA)

 

[Digital Matt]

h.d. is high density, and l.d. is low density.

http://www.tpub.com/content/photography/14208/css/14208_71.htm

 

[fadingaway1986]

Thanks Matt! But do you know what the L.D relates to?

like how the H.D minus the L.D relates to colour?


Does it relate to contrast or black and white or something like that?

 

[DocFrankenstein]

stoopid assignment. LOL

Another processing monkey is born. :lmao:

You do realise that "you" will be responsible for "our" images in the global scale of things.

So do your homework. :mrgreen:

 

[fadingaway1986]

Actually DocFrankenstein - I am attempting to do my researrch - as you can see - I just can't find any information on it.

I am already in charge of developing your films.

And I don't plan on working in a lab for long - this is part of my diploma of photography.

 

[DocFrankenstein]

Do they give you a book in your class, or are you supposed to figure it out from the net?

 

[fadingaway1986]

Nope, no book.

I did photocopy some sheets from a book they had there, but I have been through them, and all I can get from it is L.D = low density...


And most of the sheets are on black and white process control. (which I assume is similar, but not quite the same)

 

[W.Smith]

Lemme add some to the confusion: couldn't L.D. be Light Dispersion or Low Dispersion . . . ?

 

[fadingaway1986]

I am inclinded to swear at you right now, W.Smith. lol!!!

I am pretty sure its Low Density - because thats what this sheet says...

 

[Digital Matt]

It is indeed low density. I'm sorry, but I don't know enough about calibrating a color process to really help you. We only talked about that briefly in my color class.

 

[Flash Harry]

As its been a while since getting a diploma and not having been questioned on this topic I'm guessing, in my mind the LD or less dense portion of a film would relate to the lighter parts = blacks,(in print), but this is post processing, prior to process and according your formula it relates to whites and seeing as how most things photographic are topsy turvy I would go whites, make your own mind up but let me know if my answer is correct. What a lot of irrelevant crap they force upon people at colleges, good luck with the dip.