The photo below shows a typical example of a landscape photography situation with challenging dynamic range. Taken at ISO100, f/8, and 1/180sec, the multi-pattern (matrix) metering on the Nikon D200 choose to expose the clouds properly but most of the scene below the sky was under exposed. Should I blame Nikon for making such a bad camera? Nope, you may get similar result, if not worse, from just about any camera. Thanks to the camera’s decision not to properly expose the field instead, or I would be left with over exposed sky that I could not fix with post-processing. It is really a easy fix in Nikon Capture NX. Follow the link below the photo to read more.

Dynamic range challenged photo

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Posted in Photo Editing on October 8th, 2007. 7 Comments.

The zoom (during exposure) effect is a classic special effect technique that can be traced back to early film photography era. By zooming the lens during a long exposure (typically 1/4s to a few seconds), photographer can create dramatic radiating streaks from center of the frame. This is a great technique to accentuate motion or create tension in photographs. Here are three different ways to achieve the classic zoom effect today. Read More…

Posted in Photo Editing, Tips and Techniques on October 3rd, 2007. No Comments.

The EXIF data embedded in the photos you took may contain surprising amount of data. On some photo sharing sites I have seen people complaining about people removing the EXIF information because they are interested in learning photography from other peoples photos. However there are always reasons people want to remove this information. So here are some free tools for you if you really want to do so.

1. IrfanView. you can remove the EXIF information from individual photo or many photos using batch process.

2. Jhead. This is what I use. It can do a lot more on the EXIF data.

  • To remove the EXIF data from all files in current directory, type the following in windows command shell:
jhead -de *.jpg
  • To remove only the comment field by third party programs (e.g. Photoshop)
jhead -dc *.jpg
  • To get rid of all unnecessary data
jhead -purejpg *.jpg

3. jStrip. It has both command-line and graphical user interface. It also supports batch processing.

4. ExifTool. Another powerful command-line tool.

  • Remove all meta information
exiftool -all= *.jpg
  • Alternative method: rename exiftool to the following name, drag and drop your files on top of the icon (note: original file will be overwriten)
exiftool(-overwrite_original_in_place -all=).exe
Posted in Digital photography, Photo Editing on September 21st, 2007. 3 Comments.

Push processing (pushing, uprating) is a well known film photography era technique, in which the photographer intentionally underexposes the film then compensates for the underexposed film by over-developing it in the processing lab. Typically this is done by telling the camera the loaded film is rated for higher speed than it actually is. The purpose of using this technique is to obtain the needed shutter speed to avoid blur caused by camera shake or freeze motion.

With today’s digital technology, the sensitivity of the sensor (ISO) can be easily changed at any time to obtain the desired shutter speed. In the film days, it would have meant exchanging the film in the camera with another roll that is rated at a higher speed. Is there any more incentives for underexposing then compensate it in post-processing (the equivalent of a film processing lab) with today’s digital photography? After all, many people suggest that the shadow needs to be properly exposed to avoid noise. Before answering this question, let’s look at the results of my recent experiment. Read More…

Posted in Digital photography, Photo Editing on September 16th, 2007. No Comments.

There are many photo sharpening techniques. Some are quite tedious with many steps and lots of slider adjustments to make. This tip I learned today works very well and it is very simple. First, let’s check out an example. Read More…

Posted in Photo Editing, Tips and Techniques on September 10th, 2007. 2 Comments.

Portrait Manipulation Tutorial by ~rosarioagro on deviantART

Posted in Photo Editing on August 24th, 2007. No Comments.

Do your portrait photos look dull? They probably never look like the shots in the fashion magazines. Well, now you can get the same look after learning some Photoshop tricks. Freakitude has a collection of 15 best virtual makeover tutorials for Adobe Photoshop. Have some fun with those tricks. If you could make your wife happy, the approval for your next gadget purchase might become easier. 😉

Posted in Photo Editing on August 20th, 2007. 2 Comments.

This YouTube video teaches you how to simulate the shallow depth of field effect using Photoshop.

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