Friday, September 25, 2009

Check this Out - "Top Ten Doctored Photos"

"Are your photos manipulated?" That's a questions photographers are asked all the time. The digital age has brought an amazing wealth of photographic capabilities - from quick image previews on the back of your camera, to manipulation techniques that allow you to make your photo look like a watercolor painting. Some photographers shun these tools entirely - maintaining that the use of such tools is "cheating" or worse. Professionals and amateurs alike find themselves looking at an image and wondering if it's "real."

But the digital age wasn't the beginning of photo manipulation. This slide show came across my desk this week - and I think some of the more impressive manipulations are actually those that were done long before Adobe's "clone tool" made it's debut.

Enjoy!

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Tuesday, August 18, 2009

Q and A

I had a good time answering this question yesterday. I thought some of you might be interested in the topic, too.

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If your images are shot in RAW, have [they] been adjusted for sharpness, density, saturation and the like?

My wife keeps telling me (she shoots jpegs on a G6) that my final images are not 'real' because they were 'done' in Photoshop.

I say they are very real because the finished image once it goes thru the RAW processor is what I saw in my mind's eye when I took the shot in the first place…

…Do you have an opinion on this?

We are on the cusp of sleeping in different bedrooms, sharing parts of the dog and so on.

Regards,
- A

Adelaide, South Australia

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So, let's start by looking at this analytically.

What is the difference between a JPG and a RAW file? In order to create a raw file, the following steps take place in your camera:

1. Photons reach the pixels on the sensor
2. An electrical charge is created on each pixel
3. The charge is converted to voltage
4. The voltage is amplified
5. The Analog to Digital Converter (ADC) measures the volts and assigns discrete values
6. The ADC converts this information into binary

That's it. That's a RAW file. Now... to create a JPG file, the camera does all that too... and then it does the following:

7. Uses a Bayer Interpolation to create color information (remember - your camera can't see... so it is using a mathematical equation to make a decent guess at the correct colors. Sometimes it is correct - but not always. In fact, not often.)
8. White balance adjustments are made (again - the camera is blind, so it uses a complicated mathematical equation to guess at a neutral tone)
9. Makes a series of tonal adjustments including contrast enhancements, etc... in fact... all those things you can do for yourself in the RAW converter are just done automatically in a JPG file
10. Sharpens the image (another algorithm... sharpening is applied indiscriminately across the entire image. Whether it needs it or not.)
11. And last... but certainly not least. The camera compresses the data. Which means it throws away any data it didn't use. If it guessed wrong about the correct color balance - that's too bad. The correct data has been thrown out. If the contrast is too high, or the sharpening is too extreme... you are out of luck. The data is gone and it cannot be recovered. Ever.

So.

If you shoot RAW, those last five steps are up to you. Luckily, you aren't blind. (At least, I’m assuming you aren't.) You know how the scene looked in reality. So, rather than relying on a series of blind mathematical equations, you can rely on your own vision. Is it perfect? Will you get it right every time? Nope. But it's a whole heck of a lot more reliable than the camera.

How does processing a raw file compare to developing an image in a darkroom? Well - Photoshop (or whatever software you use) is your digital darkroom. You use it the way a film photographer would use a darkroom... to brighten or darken areas of the image, to adjust contrast and luminosity in specific areas of the image, to adjust color and so on. Developing an image in a darkroom is completely different from processing an image in Photoshop... but it accomplishes the same purpose. Would you say that a photographer who shoots film and develops his own film in the darkroom isn't a photographer? And would you say that a film photographer who takes his film from the camera and sends it off to have the developing and printing done by someone else is superior to the one who does it himself? It's a strange argument, really. In the past, a photographer who didn't do his own development was considered "less than". Not a "real" photographer. But now, with the advent of digital photography and Photoshop, the photographer who actually goes beyond the release of the shutter to handle the processing of the image himself is in question. :)

And finally - does it really matter? It's art. Photoshop is a tool. Just as a brush is a tool for a painter, and the kiln is a tool for a potter. So in the end, does it really matter? Just enjoy photography for what it is. Art and pleasure. An expression of what you love and who you are. Love it. Don't fight it. ;)

So yes. My photographs are shot in RAW and adjusted in the Adobe RAW converter and Photoshop. The colors are as close to the reality of the scene as I can make them (most of the time). I'm not perfect - but I do try. :)

Have a great day. And my best regards to your wife.
Please don't try dividing the dog. I hear that gets messy.

Varina

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Tuesday, February 17, 2009

The Sands of Time

We spent a couple of mornings shooting in the Mesquite dunes. The sand was wet and heavy - much easier to walk on than usual because it didn't slide away beneath our feet. The light was dull on this morning until we were about to leave. Then, the sun peeked through the clouds for just a few minutes - lighting up the dunes and the mist on the distant mountains with the softest glow. I removed some footprints from this image... as I was setting up to take the shot, Jay walked into the frame on the left. Ah well - I'm happy with the shot despite the extra work required to remove those footprints. :)

I installed PhotoShop CS4 yesterday. I'm a bit unhappy with the slow response time I'm getting, but overall the program is excellent. I'm going to see if I can find a way to improve the speed. I have so many photos I want to process!

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