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View Full Version : Colored Filters, Black & White, & Photoshop Results



Jeremy Ordan
08-26-2006, 05:24 PM
Well I don't know about anyone else but from my experience buying lenses gets really expensive really fast and I don't have an unlimited amount of income... Therefore I am a complete filter whore. The local camera shop near me carries an extensive collection of used filters, so at least once a week (or every other week) I try to make every possible effort to get by there to see what used filters they have added. Already I have built a pretty impressive collection of step-up rings, step-down rings, polarizers, ND filters, star light, diffusion, b&w enhancers, UV... does anyone care? Didn't think so.... Continuing then:

So today I was in the store and they had a nice collection of used 67mm colored filters in Orange, Green, & Yellow. I dropped my $25 and left with three almost new filters in hand and a burning curiousity (I hope it was the curiousity that was burning, otherwise I need to hit the doctor immediately) to see the different results in the colored filters.

Now, I was already very experienced in using an Orange filter when shooting studio type shots to increase the contrast of an image once it was either desaturated or once it had a b&w gradient map applied in Photoshop, but with the Green & Yellow I was a complete neophyte. I identified four specific types of shooting conditions that I was curious about: flourescent interior lights, natural light indoors, natural light outdoors with bright sunshine, and natural light outdoors with heavy shadows. I locked my camera down and shot duplicate shots with no filter, then green, then yellow, and finally orange. I was also curious to see the results on a person, so I applied that for my interior natural lighting.

I then dropped everything into Photoshop, resized and started checking out the results. What I present here, for anyone curious about colored filters and how they affect an image either in color or processed down to black and white either through the gradient map function or through a complete desaturation are my results. This is a 3 minute (15meg) video that shows all the results. It goes by quickly so you might need to pause at the conclusion to compare the results but essentially it outlines:
1. Flo Light, Natural Light, Sunshine, & Shadows with No filter, Yellow Filters, Green filters, & Orange filters
2. Taking these results and applying Photoshops Auto Color, Auto Contrast, & Auto Levels
3. Taking these images and desaturating them in Photoshop
4. Taking these images and applying a gradient map tool in Photoshop.

I thought about also shooting some polarizer shots in this mix, but honestly if you don't know what a polarizer does then this test isn't going to show you much.

I will try to get just my 4x4 results posted later on, but in the mean time, here is the video outlining exactly what effect a colored filter can have on your image (and why filters are important because Photoshop can only go so far with the ORIGINAL image)

My unofficial conclusion is very simple: I wish I had bought these filters in 72mm instead of 67mm so I could apply this to my DVX.

Enjoy

Jeremy's Colored Filter Test (http://www.stffilms.com/Movies/Jeremy%20Ordan.wmv)

-Jeremy

Tom Lowe
09-12-2006, 12:36 PM
The filters were rarely helpful.

Couldn't you achieve similar results just messing with the color levels in photoshop after shooting without a filter?

Jeremy Ordan
09-12-2006, 02:00 PM
Personally I don't think so. I think that the orange filter, for example, makes a noticable difference when taking a photograph and adjusting to black and white. The amount of contrast in the picture exceeds what Photoshop can do on it's own.

It's also goes back to Barry's comment regarding what you would rather do in camera versus outside of the camera. The less post work you have to do the cleaner your image is, plus, Photoshop can only use what you put into it...

Personally I prefer to do more in camera and by using a filter I can get closer to the results I want depending on how flat or contrasty I want the image to be.

Tom Lowe
09-12-2006, 03:30 PM
I see. I don't have much experience with such filters. I was looking at a how-to book by Ansel Adams yesterday, and he was talking about using color filters to improve his contrast on black and white landscape shots. Kind of a neat book.

Chris Stearns
09-12-2006, 04:02 PM
Wow, Thanks Jeremy for a thorough presentation. That's a lot of info to process (I feel like I should watch it a few more times and take notes), but I'm very interested in filters as well. My only experience with colored filters has been with B&W film and they're effect on contrast (red, yellow, and blue). I tried using a red filter with video once and soon realized that video doesn't need any help increasing contrast.

Anyway, back to your experiment. I didn't really think that the filters helped much with the color stills. The yellow and orange did make the photos feel like they were from the 70's, but it was they're effect on contrast that really interests me. For B&W work, the yellow filter looks very usefull indeed. The way it reduces contrast in your shots makes them look very filmlike.

Thanks again. I think I'll soon be on the hunt for a 72mm yellow filter myself.

Jeremy Ordan
09-12-2006, 04:06 PM
I agree for color photography that the filters are not the most usefull thing in the world (except for nature photography then a green could be nice, but once again, requiring a lot of post work).

For me it was the effect that each filter would have on either a desaturated image or a gradient mapped image, and the results are amazing. I will try to post a couple of stills that I used in the presentation because they show exactly how dramatic the result is (and 5 seconds is hard to study in the WMV).

sonic freak
09-12-2006, 11:30 PM
I watched it all. It's funny but I was looking at it from a DVX perspective, or a video or film perspective. Very cool. Insightful.

I'd like to thank you for putting such effort into actually DOING stuff. it made me want to do my OWN tests.

I actually like the green filters for a 70's look as opposed to orange or yellow, but everybody is different.

good work and thanks for sharing.

Jeremy Ordan
09-13-2006, 12:01 AM
OK here are large resolution still images for each filter in each situation... These are large images, but I kept them like this so that you can see the detail that each filter has on the blacks, grays, and the overall contrast of the image. I really like using filters because there are certain things that Photoshop can't do... What you put into the software is what you are going to be running with, whereas a filter allows you to control what goes in.... Just a personal preference.

Regardless, here are the 4x4 results for the conclusion section of the video... Hopefully these can offer some insight to exactly why filters can be beneficial for photography, video, or anything you purchase at Lens Crafters

Interior Flo Auto (http://www.stffilms.com/Pictures/Filter%20Test/Interior%20Flo%20Auto.jpg)
Interior Flo Basic (http://www.stffilms.com/Pictures/Filter%20Test/Interior%20Flo%20Basic.jpg)
Interior Flo Desaturate (http://www.stffilms.com/Pictures/Filter%20Test/Interior%20Flo%20Desaturate.jpg)
Interior Flo Gradient (http://www.stffilms.com/Pictures/Filter%20Test/Interior%20Flo%20Gradient.jpg)
Outside Auto (http://www.stffilms.com/Pictures/Filter%20Test/Outside%20Auto.jpg)
Outside Basic (http://www.stffilms.com/Pictures/Filter%20Test/Outside%20Basic.jpg)
Outside Desaturate (http://www.stffilms.com/Pictures/Filter%20Test/Outside%20Desaturate.jpg)
Outside Gradient (http://www.stffilms.com/Pictures/Filter%20Test/Outside%20Gradient.jpg)
Person Auto (http://www.stffilms.com/Pictures/Filter%20Test/Person%20Auto.jpg)
Person Basic (http://www.stffilms.com/Pictures/Filter%20Test/Person%20Basic.jpg)
Person Desaturate (http://www.stffilms.com/Pictures/Filter%20Test/Person%20Desaturate.jpg)
Person Gradient (http://www.stffilms.com/Pictures/Filter%20Test/Person%20Gradient.jpg)
Shadows Auto (http://www.stffilms.com/Pictures/Filter%20Test/Shadows%20Auto.jpg)
Shadows Basic (http://www.stffilms.com/Pictures/Filter%20Test/Shadows%20Basic.jpg)
Shadows Desaturate (http://www.stffilms.com/Pictures/Filter%20Test/Shadows%20Desaturate.jpg)
Shadows Gradient (http://www.stffilms.com/Pictures/Filter%20Test/Shadows%20Gradient.jpg)