Mike Chaney's Tech Corner

Mike's Software => Qimage Ultimate => Topic started by: jeffjessee on September 22, 2010, 05:52:03 PM



Title: Print Filter
Post by: jeffjessee on September 22, 2010, 05:52:03 PM
Because of the way the "Fill Light" works (raising saturation as you add light), I have a large batch of photos that are over-saturated. If I already have each image filter with saturation set to -15, if I add a print filter with saturation set to -10, will it be additive, and cause the saturation to be -25? The example did not say that you could add another case of the same filter already used, it just showed adding different filters.

I'm guessing the "Print Filter" does not apply to making web photos, so I will have to "Print to file" to get the images to send to a photofinisher if I need the print filter.

I sure wish the Fill Light filter didn't change the saturation, or at least didn't change it so drastically. It seems to me that it more than compensates for the decrease in saturation you would see when adding brightness. Maybe you don't ever underexpose your images enough to see what I'm talking about, but a Fill of 10 or more really ruins the photo, and requires reducing the saturation a lot. It would just be nice to not have to do that extra step.

Thanks,
Jeff Jessee


Title: Re: Print Filter
Post by: Terry-M on September 22, 2010, 10:24:11 PM
Hi Jeff,
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If I already have each image filter with saturation set to -15, if I add a print filter with saturation set to -10, will it be additive, and cause the saturation to be -25?
I don't think it would be additive. The range goes from  -100 to +100 so I would assume -15 is like 85% of maximum  and an additional filter of -10 would be like 90% of the first setting so you would end up with ~77% of the original saturation. But I'm just guessing really  ::)
Quote
I sure wish the Fill Light filter didn't change the saturation, or at least didn't change it so drastically. It seems to me that it more than compensates for the decrease in saturation you would see when adding brightness. Maybe you don't ever underexpose your images enough to see what I'm talking about, but a Fill of 10 or more really ruins the photo, and requires reducing the saturation a lot.
I regularly expose for highlights and find that Fill of 15 and above increases saturation too much. In fact in a recent post (I can't find it though) Mike said something using Fill up to 15 before Saturation is affected so hopefully he will tweak his Fill algorithm in the near future.  :)
Terry
Edit: I found Mike's reference to Fill and saturation:
http://ddisoftware.com/tech/general-tech-discussion/not-convinced-raw-vs-jpg/msg7158/#msg7158
Reply #24


Title: Re: Print Filter
Post by: jeffjessee on September 23, 2010, 12:26:10 AM
Terry-

I guess I'm just not a fan of a lot of saturation, but at a fill of 15, I think that saturation is WAY too much. Maybe it's just the way my camera handles under-exposed images. Does adjusting exposure in raw by clicking on one of the 9 rectangles effect the saturation like the fill filter does? If not, maybe I will have to start using raw.

Jeff


Title: Re: Print Filter
Post by: Terry-M on September 23, 2010, 06:57:32 AM
Jeff,
Sorry, I assumed you were referring to raw fill.
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Does adjusting exposure in raw by clicking on one of the 9 rectangles effect the saturation like the fill filter does?
No, and doing that can often avoid having to use high levels of Fill.
Quote
If not, maybe I will have to start using raw.
I thoroughly recommend it  :D
Terry