lookinglass

<p> </p>

<ol>

<li>1. Shot a series in the following sequence </li>

</ol>

<p> i. EV0 exactly as the meter reading (both reflected and incident were same) <br>

ii. Four more shots upto EV0 plus 5 EV <br>

iii. Four more shots upto EV0 minus 5 EV <br>

Both in steps of 1EV <br>

Next steps </p>

<ol>

<li>All shot in RAW under exactly same ambient light </li>

<li>Next I used Adobe Bridge set all parameters to Zero fixed a white balance and achieved a pixel reading of 118. Saturation also Zero and saved JPEG </li>

<li> I opened the rest of the ten images under exactly same bridge settings and saved them as separate files </li>

<li>I used the Sekonic Data Transfer software Create Profile>Quick mode </li>

<li>I did the EV0 setting for midpoint as required by the software </li>

<li>I imported all the eleven images as required by the software </li>

<li>I set the + marks as required by the software </li>

<li>When I click the nest button I now get a profile curve that show both EV and Pixel values on both sides from the EV0 </li>

<li>I use this curve review the Clipping point and Dynamic Range settings </li>

<li>I preserve this as a profile and save it one the 758 </li>

<li>Now using the profile shows me the new Dynamic and clipping Range </li>

</ol>

<p> <br>

Questions <br>

</p>

<ol>

<li>Anything technically wrong with the procedure ?</li>

<li>Is it ok to use a single Gray card in this manner ? </li>

</ol>

Hi,

I am planning to work and standardize with Tri-X 400. I Studied the

Kodak literature and have the following questions.

1) How to interpret the dip in Spectral sensitivity in the 450 - 550

Nm Region ? Does it mean the negative density will be lower in the

bluish green region.

2) I plan to use D-76 and compared the Contrast Index curves for

different development times. The D 76 Straight solution has a very

steep slope compared to the D 76 diluted 1:1. Does that mean it is

better to use 1:1 so it will be less sensitive to errors in

development time/temp and afford more control. Is there any other

factor to consider ?

3) How does the Toe portion of this film behave? How to interpret

this practically.

Thanks for the help in advance.

Regards

Rajkumar