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About Johnny
Expertise
I am a professional photographer who has worked in almost every field. I made the statement 4 years ago, "digital is at least 10 years off," and went digital 6 months later! Computers are the worst enemy, not digital cameras. I built my system from the ground up (cpus and all). and top many 4x5 photographers! It has arrived. Home based cpus have not. Most digital problems come from geometric mathmatics while adjusting and corrupting images without calculating the proper amount of info needed.

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I am a successful, and highly credited photographer who owns his own company. I shoot all digital.

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#1 photography in the nation for mags with under a million subscribers.

 
   

You are here:  Experts > Arts/Humanities > Visual Arts > Digital Photography > photography as a career

Digital Photography - photography as a career


Expert: Johnny - 5/24/2005

Question
'Most digital problems come from geometric mathmatics while adjusting and corrupting images without calculating the proper amount of info needed.'
I am somewhat familiar with altering digital images in photoshop but I don't understand what you mean by this comment. What kind of problems have you encountered in the digital field that had you perplexed and how did you overcome them? I know of a photographer that is considering hiring an assistant and I am thinking about asking her if I can join her. Should I concentrate on perfecting any specific technique such as photoshop, etc...She doesn't do any digital photography yet. Any advice?
Thanks

Answer
I pressed something stupid on my CPU.  If you got my answer and understood it.  Ignore this one.

Basically, when adjusting an image in photoshop, one needs to start with enough information to land on their target size, not start with your target size then adjust the color, contrast, etc...  I fyou look at your levels pallette after much enhancement, you will see gaps in the information.  These gaps need to bee full when you build your target size image, otherwise one is simply deleting details, or corrupting your image.  I print many ads larger than 30x40 inches, and tend to maintain a little more than double the amount of necessary info needed to print at 16bits 360dpi.  I usually start with double the size then work down to the remaining information and details.  Always make sure theat every color in your histogram is properly represented at all densities.  If not your image can look soft, or blurry.  Most pro digital cameras will be fine at 11x14 or smaller when shooting a low detailed subject in the jpeg mode.  But I shoot a lot of detailed architecture, where the finer seperations of shadow densities is very important.  I found highglight densities tend to muddle together first (although this may just be my personal technique) with a CMOS sensor, but I never get shadow noise on my Canons...even at very long exposures.

There are also others, but this is the main one.  Many people set their print size first, and then color correct.  This will actually corrupt your image.  It is a good idea to always adjust the color at 16bits and souble the size.  This will ensure a minimum loss of detail.

I hope this makes sense.  I find it easier to show this than explain it.  I didn't go to MIT or anything, it is just the basics of how the pixel language works.

-j

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