Category: HDR

The Day Begins When The Crew Boat Arrives

Posted on by Nick Roberts
Crew Boat Picking Up Workers At the Start of The Workday.
Crew Boat Picking Up Workers At the Start of The Workday.

Click on the image to enlarge it in a new window.

Each morning after the crew meets to go over the day’s activities and assignments many of them are transported to their worksites by Lee the crew boat operator. I have learned that Lee has a good handle on what is taking place at all the pier locations on the river, he know when something significant is going to happen and often directs me to interesting activities throughout the day.

I chose this image to show Lee’s boat arriving to carry the workers to their jobs for the day. I liked the way the boat’s wake smoothly rippled across the river and the contrast of the safety vests on the workers with the deep shades of blue and green in the sky and river. Seeing the scale of the project is always difficult but whenever there are people in the scene it becomes clear what a monumental undertaking this is.

I shot this in HDR and processed it using NIK HDR Efex Pro 2 and Aperture 3.

 

Abstract Images From Construction

Posted on by Nick Roberts
The Nuts and Bolts of Construction
The Nuts and Bolts of Construction

Click on the image to enlarge it in a new window.

The image above is of some construction fasteners used in the heavy construction concrete forms on the Ohio River Bridges Project that Walsh Construction is doing in Louisville KY. I liked the contrasts of the colors and textures and the randomness of the various items. I processed it using Topaz Clarity and Aperture 3.

Rock Drill Sediment Abstract
Rock Drill Sediment Abstract

Click on the image to enlarge it in a new window.

This image shows the sediment that settled on the rock drill being used to drill the piers for the Ohio River Bridges Project. I really liked the topographical feel that the sediment left on the metal surface as the water evaporated and dried while the tool was not in use. I shot it as a three frame bracket set and processed it using NIK HDR Eex Pro 2 and Aperture 3.

 

Concrete Pour Equipment

Posted on by Nick Roberts
Concrete Pump Boom
Concrete Pump Boom

Click on the image to enlarge it in a new window.

This image shows the concrete pump boom transferring concrete to a pier pour in the middle of the river. The concrete is first transferred from the delivery trucks to the concrete pump which is sitting on shore. The concrete pump then pushes the wet concrete through the large pipe on the boom to the concrete placement workers who direct it’s placement in the concrete form in the river.

I chose this composition to emphasize the length that the material must be transported in order to make the piers in the river. I shot a three frame bracket set of -2, o and +2 EV and then processed the final image by merging them in NIK HDR Efex Pro 2. After merging them and applying some basic tone-mapping adjustments I returned the image to Aperture 3 for final processing.

Concrete Vibrator Operator at Work During the Pier Pour.
Concrete Vibrator Operator at Work During the Pier Pour.

Click on the image to enlarge it in a new window.

In this image the vibrator operator is using a control box he is wearing around his waist to vibrate the wet concrete and eliminate any air pockets that may have formed as the concrete was placed in the form. The metal rebar that he is standing inside will connect the next pice of concrete to this base after additional forms are attached as the tower base rises out of the river. This particular concrete pour required 53 truck loads of concrete, 537 cubic yards of material, and took nearly an entire workday to complete.

This image is also a three frame bracket set processed with NIK HDR Efex Pro 2 and Aperture 3.

Rigging for the Caisson Pick

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

Click on the image to enlarge it in another window.

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

Click on the image to enlarge it in another window.

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.

 

Caisson Pick

Posted on by Nick Roberts
Lifting the Caisson Into Place
Moving the Caisson Into Place

Click on the image to enlarge it in another window.

Yesterday morning the caisson for the bridge pier, 6R2, was moved into place inside the 12 foot diameter steel casing that will protect the bridge piers from damage once the bridge is finished and the river channel is reopened. The rebar caisson is over 60 feet long and moving it requires excellent coordination between the crane operator and the crew on the ground. The caisson must be precisely placed so that the connections to the next components of the tower can be completed. Not only are there Ironworkers involved but additionally there are Carpenters, Pile Drivers and Surveyors that have specific roles to play when these caissons are positioned. The men in the foreground are surveyors whose role is to make sure that the attachment points are properly aligned by accurately measuring exactly where the caisson is situated in the bore. Once all that is completed the cylinder will be poured full of concrete and the pier will be ready for the next piece to be attached.

This is a three frame bracket set of images shot at -2, 0 and +2 EV. The three images were merged in NIK HDR Efex Pro 2 to create the HDR image. After merging and tonemapping the image was returned to Aperture 3 for final processing.