How do you capture paint defects with a camera?

JJH

New member
I cannot for the life of me take a picture that demonstrates my before & after photos. Is there a certain way you have to do it? I have tried in the sun, with flash, without flash, with a shop light, etc.
 
It works best when you do not use the auto mode exposures to intentionally over expose the image since when your camera sees a lot of light (like the sun or a light being reflected) it automatically tries to reduce the light to compensate. It is about angles of light and the camera to see it and then insuring you get the exposure set actually capture them.

You should bracket your shots a lot more meaning take more shots at various exposures to be sure you have a good one.
 
I cannot for the life of me take a picture that demonstrates my before & after photos. Is there a certain way you have to do it? I have tried in the sun, with flash, without flash, with a shop light, etc.

What type of camera are you using and what color is the paint?
 
Be sure to use the manual focus or give the camera something to focus on, like a piece of tape on the paint. Otherwise they tend to hunt for something to focus on and usually grab the reflection rather than the true surface of the paint.

Lighting is key too.

Dave Saunders is great at getting good before and after pics IMO.
 
Also, I find light metallic paints to be the hardest to capture defects in and it seems to help (at least for me) if the light source you are using is further back from the paint. Otherwise it reflects too much light back and makes it impossible to see defects, even in person. I'll often shut my shop light off and set my Brinkmann up about 8 feet away from the paint.

Different lights are better at showing certain defects too (halogen, Xenon, Florescent, LED...)
 
FYI


Here is an example of the difference using manual focus vs. auto focus with nothing for the camera to pick up but the reflection in the paint. Obviously this is after correction but it applies for before correction too.

In this pic I used manual focus so that I could focus on the surface of the paint to show a true after correction shot. Notice the distortion of the image as a result of the orange peel?

20110828-_MG_5269.jpg


No here is that same shot with the camera in auto focus and nothing on the surface of the paint for it to focus on. Rather than focus on the surface it locked in on the reflection of my light, result in a smoother over all image, but not a true shot IMO.
20110828-_MG_5270.jpg


With manual focus you can really dial in on the surface of the paint! ;)
IMG_2213.jpg
 
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