picture sharpness

[Guest manikandan]

hi friends

i want to know about how to improve pictur quality(in sharpnees ),which factors are affects that.

[John Pytlak RIP]

hi friends

                i want to know about how  to improve pictur quality(in sharpnees ),which factors are affects that.

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Over the years, Kodak has developed many innovations to improve film sharpness. Generally, you want to keep the emulsion layers very thin, and to have the components in those layers scatter very little light. You also want very efficient control of halation, so that light cannot bounce back from within the base to cause halation and loss of sharpness.

 

Among Kodak's developments, recognized by awards and patents:

 

Use of Rem-Jet to control halation, and act as an antistat and optimize camera transport

 

Proprietary anti-halation dyes

 

T-grain technology to greatly reduce light scattering within the emulsion and allow much thinner layers

 

2-electron sensitization to greatly increase the efficiency of forming an image, allowing smaller grains and less light scatter

 

Use of DIR and DIAR couplers to improve sharpness and enhance color

 

Use of absorber dyes to control light scatter within the emulsion

 

Today's Kodak VISION2 Color Negative films are the sharpest within their speed class. Kodak VISION2 100T Color Negative Film 5212/7212 is the sharpest motion picture color negative film, even sharper than the slower Kodak EXR 50D Color Negative Film 5245/7245:

 

http://www.kodak.com/global/images/en/moti...ve/5212_mtf.gif

[L K Keerthi Basu]

Dear John,

 

Please more details about the DIR and DIAR dyes and how they differ from each other? Also explain about what is their part in the image in sharpness?

 

L.K.Keerthibasu

[John Pytlak RIP]

Dear John,

 

  Please more details about the  DIR and DIAR dyes and how they differ from each other? Also explain about what is their part in the image in sharpness?

 

  L.K.Keerthibasu

<{POST_SNAPBACK}>

 

From one of many Kodak patents on the technology:

 

Various ways are recognized in the photographic industry for releasing a photographic inhibitor from a compound, such as a coupler, in a photographic silver halide material and process. Release can be indirect through a linking or timing group or it can be direct, for example, upon reaction of the coupler with oxidized color developing agent during processing. Image-modifying couplers that release photographic inhibitors directly from the coupler are preferred in the photographic industry because manufacturing such couplers is easier, faster and less costly.However, many times direct release couplers, due to their inflexibility with regard to timing of release, are not practical for and effective at providing desired effects such as reduction of gradation, production of a finer color grain, improvement of sharpness through the so-called edge effect and improvement of color purity and color brilliance through inter-image effects. In this connection, reference is made to the article by C. R. Barr, J. R. Thirtle and P. W. Vittum entitled "Development-Inhibitor-Releasing (DIR) Couplers in Color Photography" in Photographic Science and Engineering 13, 74(1969).

[Jon Rosenbloom]

hi friends

                i want to know about how  to improve pictur quality(in sharpnees ),which factors are affects that.

<{POST_SNAPBACK}>

 

Ideally, the only light that enters the camera should be the light that is reflected from your subject. Pay close attention to flares, even if they're soft.