| Auto exposure as negative with adjustments
to overall gray balance done in photoshop |
|
 Auto exposure - scanned as negative |
 Auto-exposure negative, gray scale corrected in photoshop, note white squares are clipped |
| Scan as positive, adjust histogram in
scanner program to remove orange mask, balance done in
photoshop |
|
 scan as positive, manual exposure, mask removed, contrast reduced |
 photoshop: remove color cast set b&w point, then fix gray scale |
| Scan as positive, make all changes to image
in photoshop |
|
 Negative scanned as positive, manual exposure, 16bit output |
 reverse curve applied in photoshop |
 Adjust black and white points with curves |
 Overall gray scale balance with curves |
 Final gray scale curves adjustment |
 Final step - make image look more "realistic" |
You can
see an enlarged view of any of the images by clicking on the
thumbnails, above.
You can also navigate from one to another using the pointers in the upper right corner of those pages.
Click here to see the final side-by-side comparisons of the manually and automatically adjusted images.
Note that all these images were imported and edited in 16 bit mode,
they are reduced to 8bit for screen display. Opinion is divided on whether this is necessary.
Unresolved problems:
1. The blue channel is clipped at 255 in the original scan in the blue square at lower left and in the magenta bar in the upper sample.
This is without any exposure adjustments or alterations in the scanner software. There does not appear to be any way to change this.
2. The processing in the scanner program seems to be done using 8 bit calculations, regardless of the output mode setting,
so minimizing the amount of changes done this way might be better.
Conclusions:
Although not apparent from this image (the white squares have no texture in the original),
doing adjustments after scanning may be beneficial for images with important detail in the highlights.
back to tips
You can also navigate from one to another using the pointers in the upper right corner of those pages.
Click here to see the final side-by-side comparisons of the manually and automatically adjusted images.
Note that all these images were imported and edited in 16 bit mode,
they are reduced to 8bit for screen display. Opinion is divided on whether this is necessary.
Unresolved problems:
1. The blue channel is clipped at 255 in the original scan in the blue square at lower left and in the magenta bar in the upper sample.
This is without any exposure adjustments or alterations in the scanner software. There does not appear to be any way to change this.
2. The processing in the scanner program seems to be done using 8 bit calculations, regardless of the output mode setting,
so minimizing the amount of changes done this way might be better.
Conclusions:
Although not apparent from this image (the white squares have no texture in the original),
doing adjustments after scanning may be beneficial for images with important detail in the highlights.
back to tips