Hello, In the recent discussion about Kodak Ektar vs the Portras, the focus very quickly changed from the difference between these two films into a discussion about using a filter on your camera when taking pictures using colour negative film. Of Ektar, Mr 2F/2F said this: Proper exposure of all the color layers is very important with this film. That means you will have the easiest time printing if you filter it: - any time it is cloudy - any time it is overcast - any time your subject is primarily in the shade or in window light - any time it is more than a few hours either side of noon. - any time you shoot under artificial light that is not daylight balanced (i.e. most artificial light in our day-to-day lives) Given what many people tend to shoot, this means that most people should filter this film a good deal of the time. The same is true of any color neg material, but especially important with this film due to the fact that it's contrast lowers it's latitude for imbalanced color. There then followed a discussion about when and with what to filter colour neg film. And it's all left me rather baffled. I've used colour negative film for the last three or four years now and never used a colour correction filter. In all that time, I have never thought that the colours in the final photograph were 'off', whether shot in daylight or with a flash. I have had many minilab prints made and recently started to make optical RA4 prints. This makes me think that one of these two conclusions may be valid. Which do you think is more likely: a. the need for filters (80, 81, 82 etc) has been overstated by people in the Ektar v new Portras thread; or b. some of my pictures would have turned out with far better colour (noticeable to the man on the street) if I had used the relevant filter in open shade or under a cloudy sky etc. Many thanks for any contributions!