# Inconsistent with Negative Conversion and Roll Analysis On

**URL:** <https://forums.negativelabpro.com/t/inconsistent-with-negative-conversion-and-roll-analysis-on/9738>\
**Category:** Image Editing Help\
**Created:** [September 26, 2025, 3:59pm UTC](https://forums.negativelabpro.com/t/inconsistent-with-negative-conversion-and-roll-analysis-on/9738 "2025-09-26T15:59:53Z")\
**Posts on this page:** 1\
**Showing post:** 22

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**Author:** ![Digitizer](https://avatars.discourse-cdn.com/v4/letter/d/57b2e6/32.png) [@Digitizer](https://forums.negativelabpro.com/u/Digitizer)\
**Post date:** [October 4, 2025, 2:02pm UTC](https://forums.negativelabpro.com/t/inconsistent-with-negative-conversion-and-roll-analysis-on/9738/22 "2025-10-04T14:02:02Z")

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> [@SimonGR](#):
>
> I think we have to admit all that the cloudy and rain condition when I took the pictures were not good and maybe because the shots are all similar (in terms of framing and subject, same building) the color differences are even more obvious.

As @nate pointed out above, taking a photo with the same setting and changing light will, in the end, produce different looks. Film is not linear and r, g and b sensitivity curves are not identical. Any change of parameters in capture necessitate some adjustment if output should be close to identical.

The non-linearity of film can be beneficial too - as we can learn from e.g. Ansel Adams’ zone system.

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