caterpillar CAT 14G (140G) grader - road construction (laos)


Caterpillar 14G Grader - Road Construction (Laos)

If you can tell me whether this is a 14G or a 140G, please post a comment or email me, thanks!

HDR from a single RAW

at work CAT 14G cat grader caterpillar 140G caterpillar 14G road grader caterpillar road grader engine groundwork heavy equipment hydraulic machinery motor grader mud tires preparation road construction roadworks wheels working yellow

Photos of road construction (Vietnam, Laos, India).­

Those photos are also in my Vietnam photo album, Laos photo album and India photo album.

You can also check these smaller selections of photos on selected subjects:

- Tribe people of Vietnam: A selection of my best photos of Tribe people from Northern Vietnam.­

- Markets of Vietnam.

- Tiết canh (raw blood soup).

- Road construction.

- Spaying a piglet.

- A photo-documentary about eating dog meat for dinner: "Thịt chó" means eating a (hot) dog - literally). But be advised that those are very GRAPHIC photos and not advised for children.­

Photos processed with HDR and "tone mapping", e.­g.­ using Photomatix.­

See also related series: TT-HDR - True Tone High Dynamic Range.

I sometimes do HDR processing from a single RAW exposure, since my camera has about 6-stop dynamic range in RAW mode.­ This is the only possible way when shooting a moving subject.­

For those wondering about the technical part, here is some information about my workflow for producing tone-mapped HDR images from a single RAW exposure:

- The RAW image is used to generate 3 images using exposure compensation with Photoshop using Adobe Camera Raw: -2EV, 0EV and +2EV.­ This allows to capture about the entire dynamic range stored in the RAW file.­ You could also use Lightroom to do that too, or any software than can process those RAW files.­ In my case, I need to first convert the RAW files into DNG format (using the standalone Adobe CameraRaw Converter) because the version of Camera Raw that I can use with my Photoshop is not compatible with the RAW format of my (recent) camera.­ But you don't need to go through the DNG step if you have the latest Adobe software.­

- The 3 images (-2EV, 0EV and +2EV) are then merged into one HDR image using Photomatix (you could also use Photoshop to do that).­ This is basically an automatic process with no parameters to adjust.­

- The HDR image is then processed with Tone Mapping to obtain a displayable image.­ I use Photomatix for the tone mapping.­ There are many knobs that can be adjusted, but in general I use the default setting and I increase the color saturation value in the Tone Mapping dialog.­ I then save the resulting tone-mapped image in TIFF format.­

- I then correct Chromatic Aberrations using the free and automatic Photoshop plugin from Photoacute, which works very well most of the times.­

- I then use standard photoshop layers to do the usual final adjustments (Level, Curve, Saturation, Color Balance).­

If you like these photos, don't hesitate to leave a comment or email me.

Photos taken in Laos