April 23, 2007 HelpLine


Q) An interesting problem came up recently with regards to evidence of bylaw contraventions in Pretoria, City of Tshwane, South Africa. The City Councils officials have switched to digital cameras for much of their work. However, it turns out that in court proceedings, the magistrates/judges aren't prepared to accept digital photographs as evidence because of the possibility of "fabricating" evidence. This is a valid point, and they want photographic film evidence, either positives or negatives. The question then is whether there's any photographic processing done in-camera, which leaves a watermark (maybe we should call that a "digimark"), which will indicate when pixels in the original have been removed or added, as opposed to colour, gamma and highlight or shadow adjustment to improve the original photo WITHOUT altering any evidence that might be required in court. If not available yet, this is certainly worthwhile exploring.

DPMag
Q) An interesting problem came up recently with regards to evidence of bylaw contraventions in Pretoria, City of Tshwane, South Africa. The City Councils officials have switched to digital cameras for much of their work. However, it turns out that in court proceedings, the magistrates/judges aren't prepared to accept digital…

April 16, 2007 HelpLine


Q) I'm starting to pay more attention to white balance in my photography. I've read some of what you and others in PCPhoto have said about not forgetting white balance when shooting RAW. So now I've been trying some photography while keeping the dial off of AWB. For the most part, it has been working well. But there have been some situations where I haven't been satisfied. So I'm wondering about custom white balance and whether I should always be using that?

DPMag
Q) I'm starting to pay more attention to white balance in my photography. I've read some of what you and others in PCPhoto have said about not forgetting white balance when shooting RAW. So now I've been trying some photography while keeping the dial off of AWB. For the most…

April 9, 2007 HelpLine

Need More Space
Q) I'm running out of room on my hard drives! While I've been archiving my original images to DVDs, I have hundreds of images on my computer. I'd like to add more storage, but I'm not sure which direction to go.

DPMag
Need More Space Q) I'm running out of room on my hard drives! While I've been archiving my original images to DVDs, I have hundreds of images on my computer. I'd like to add more storage, but I'm not sure which direction to go. J. James Austin, Texas A) As…

April 2, 2007 HelpLine

Shooting Hoops
Q) I'm new to digital SLRs and want to photograph my son's indoor basketball games. Working in shutter- and aperture-priority modes, I can get sharp photos or bright photos inside, but haven't been able to get sharp, properly exposed photos without a lot of noise. My white balance and ISO are both set on auto. What am I doing wrong?

DPMag
Shooting Hoops Q) I'm new to digital SLRs and want to photograph my son's indoor basketball games. Working in shutter- and aperture-priority modes, I can get sharp photos or bright photos inside, but haven't been able to get sharp, properly exposed photos without a lot of noise. My white balance…

May 2007 HelpLine

Making Workflow Work

    • Raw File Processing
    • The "Oh-Really?" Factor

DPMag
Making Workflow Work • Raw File Processing • The "Oh-Really?" Factor RAW File Processing Q) I don't know what's best when working with RAW files-opening and working on the RAW file and then saving it as a TIFF or first converting it to a TIFF and then working on it?…

March 26, 2007 HelpLine

Interpreting Interpolation
Q) When I'm resizing my images, I'm given several different options for interpolation. People tell me to use bicubic, but there are two sub-options. Which should I be using?
DPMag
Interpreting Interpolation Q) When I'm resizing my images, I'm given several different options for interpolation. People tell me to use bicubic, but there are two sub-options. Which should I be using? M. Stewart Via the Internet A) Anytime you resize your image using interpolation-whether increasing or decreasing image size-your software…
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