Tag: cranes

Rigging for the Caisson Pick

Posted on by Nick Roberts
Rigging the Caisson For Lifting #1
Rigging the Caisson For the Pick #1

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These Ironworkers are setting the rigging to pick this caisson and right it so that it can be lowered into the casing for final placement. To lift it two cranes must coordinate their actions so that the main crane can upright the assembly and transfer it from the barge to the pier casing. Photo Tip: Having the men in the photo helps give scale to the size of the structure.

Once more this is a three bracket set of exposures using -2, 0 and +2 EV to capture the broad dynamic range between the sky and the foreground I encountered. This is one of the most important reasons to learn and use HDR techniques so that in a situation like this there is a reasonable chance that there will be enough data to create a good image after merging the exposures.

I used NIK HDR Efex Pro 2 and Aperture 3 to merge and process the image.

Rigging the Caisson For Lifting #2
Rigging the Caisson For the Pick #2

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This second image is not an HDR image. There was too much movement of the cables and hooks, between frames in the bracket set; for the anti ghosting to handle in NIK HDR Efex Pro 2. I decided to take the normal (0 EV) exposure into Topaz Clarity to see how well it would do with the wide dynamic range. All in all I am fairly pleased with the way that I was able to bring out some shadow detail and still hold the sky detail using a single exposure. I know some folks like to take the normal exposure and change the exposure value in subsequent copies for a faux HDR look but I don’t go that route since there isn’t any additional data captured as there is when a bracket set is used.

 

Sunrise Over the Ohio River Bridges Project

Posted on by Nick Roberts
Ohio River Bridges Project Morning
Ohio River Bridges Project Morning

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Today’s HDR image is from the Ohio River Bridges Project, Downtown Span, being built by Walsh Construction on the Ohio River in Louisville Kentucky; they are now working on the foundation for every pier across the river. This view is from the Indiana shore in Jeffersonville looking east. There are cranes on barges across the river; each one doing some piece of work essential to the foundation prep work. Looking south there are also cranes along the horizon where work is also progressing on the rebuilding of Louisville’s Spaghetti Junction which will tie the existing freeways into the new Ohio River Downtown Span.

I used my usual three bracket set of -2, 0 and +2 EV to capture the broad dynamic range in the scene. In my processing I first merged the three images in NIK HDR Efex Pro 2 where I tone-mapped it before bringing the HDR image back into Aperture and into onOne Perfect Layers where I used some adjustment layers to intensify and enhance to colors in the scene. I also applied my sharpening in onOne Perfect Effects before saving the image for the web from Aperture 3.