Tag: High dynamic range imaging

Using Handheld Bracket Sets for HDR Images

Posted on by Nick Roberts
Deuce Coupe Interior #1
Deuce Coupe Interior #1

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I found another good use for HDR processing last week while photographing at the NSRA Streetrod Nationals here in Louisville. It’s always difficult to capture the details inside the cabins of these cars in a single exposure. By shooting a three frame bracket set of +2, 0 and -2 EV I was able to tame the highlights and reach into the shadows. I shoot handheld whenever I can to allow myself the luxury of being able to frame my images without the hinderance that a tripod creates. I have found that applying 20% Ghost Reduction and checking Align Images in NIK HDR Efex Pro 2 compensates nicely for any camera movement that a handheld bracket set creates. In this image you can see the texture in the carpet as clearly as if it had been shot from a tripod.

I used the Balanced Preset in NIK HDR Efex Pro 2 as my starting point for merging the three frames before tone mapping the image. I then returned the image to Aperture 3 where I completed my adjustments to exposure and contrast before applying sharpening.

Deuce Coupe Interior #2
Deuce Coupe Interior #2

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For this monotone image I took the color HDR image into OnOne Perfect Photo 7.5 and used the Perfect B&W application. I started with the Ambrotype preset and then made several changes to it’s default setting. I used a cream color for the paper tone and a deep blue for the silver tones. The ambrotype preset includes a border bit I didn’t care for it so I also changed it with the border adjustment tab. I chose the Emulsion #003 and added it and I also changed the width of the edge to something I felt better fit the image. By beginning with my HDR image I was able to show the same detail in the shadow areas as I had in the color image and also control the contrast and highlights. 

 

Forecastle Fun

Posted on by Nick Roberts
Forecastle Blew His Mind
Forecastle Blew His Mind

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Saturday evening I went down to Waterfront Park for the Forecastle Festival. I wanted to capture the frenzy and activity that Forecastle is known for. I opted to shoot bracketed shots of -2, 0 and +2 EV for eventual creation of HDR images of the crowd. I expected blur and indistinct faces due to the slow shutter speeds that were entailed and I was pleasantly surprised by this bracket set that left one man in the scene without his head. I played around with the anti-ghosting setting and finally applied 20% which rendered his head as a faint blur. After tone-mapping the initial merged shots in NIK HDR Efex Pro 2 I returned the file to Aperture 3 for final color, contrast and sharpening adjustments.

Forecastle Fun #2
Forecastle Fun #2

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I applied much the same processing to this image too. I especially like the way the purple light from the water feature illuminated the underside of the bridge and added color to the shadows on the figure in the foreground.

 

Louisville’s Downtown Bridge Is Underway

Posted on by Nick Roberts
The first phase of construction on the Downtown Bridge is underway.
The first phase of construction on the Downtown Bridge is underway.

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This is another HDR image of  Waterfront Park looking west toward the crane that will be part of the skyline for the next couple of years. I shot this from the ramp to the Big Four Bridge overlooking the Swing Garden. I shot a handheld bracket set of three frames +2, 0 and -2 EV. I was able to hand hold the shots because it was mid morning and the light was high which resulted in relatively short exposures.

I first took the three RAW frames into NIK Sharpener Pro and applied adaptive sharpening to all of them. I then opened them in NIK HDR Efex Pro 2 where I merged them and applied  the Deep 2 preset which I tweaked a bit to reduce some of the luminance and saturation. I then returned the merged image to Aperture 3 for final adjustment, sharpening and added a small vignette. In Aperture 3 I also adjusted the exposure and contrast as well as tweaking the individual color channels in the green, yellow and blue areas.

Topaz Clarity vs Topaz Adjust Comparison

Posted on by Nick Roberts
Topaz Adjust Version
Topaz Adjust Version

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I wanted to see how Topaz Clarity would compare to Topaz Adjust in terms of rendering a more realistic faux HDR image so I went back in my library to some work I did at the Bonneville Salt Flats during the BUB Motorcycle Speed Trials.

The image above was processed in Topaz Adjust 4 and shows a lot of halos as well as a very surreal rendering of the racers themselves. I reprocessed the original file using Topaz Clarity which really improved on the result as you can see in the second version below. There is a lot less noise in the sky and the skin tones are more realistic though the shadow areas are not as open as in the earlier version. All in all Topaz Clarity made a smoother version while still compensating for the extreme lighting conditions of shooting at midday on the salt flats.

Topaz Clarity Version
Topaz Clarity Version

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Below is another image of a sunrise over the entrance to the Bonneville Salt Flats that I used Topaz Clarity to process. It has fewer problems with halos and noise while still extracting a great deal of information from the single frame exposure I used to create it.

Bonneville Sunrise
Bonneville Sunrise

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I like the way that Topaz Clarity handles these types of images and suggest that you give the Topaz software a trial of your own to see if it is something you want to add to your processing tools and techniques. Topaz is running a summer sale offer of the entire Topaz Bundle for $199 until July 7, 2013 which makes it a really good deal. If you want to trial or purchase any of the Topaz products please use the link below which credits me with your purchase and pays me a small commission.

http://www.topazlabs.com/705.html

 

Topaz Labs Introduces It’s Latest Product “Clarity” Today

Posted on by Nick Roberts

Clarity_box_clear

As I noted in yesterday’s post there are currently a lot of new and exciting products coming out to help in post-processing our images. Topaz Labs released one such breakthrough product today with the release of Topaz Clarity.

I am especially interested in the ability of Topaz Clarity to minimize halos and the new masking feature. I’ll be working with it over the next few days and sharing my thoughts and results with you as I explore these features.

Here are some of the unique features introduced in Topaz Clarity:

1. Selective Contrast Control. With Clarity, Topaz Labs has developed a cutting edge process of selecting specific contrast variations in your original image, allowing you to quickly target and then increase or decrease the contrast and clarity in that specific variation.

2. Breakthrough Halo-Free Algorithm. Boost contrast and clarity without emphasizing transitions between light and dark areas, eliminating the common problem of halos, noise and artifacts.

3. Advanced Hue/Saturation/Luminance Technology. Using IntelliColor technology, you can easily enhance your image with the HSL filter, getting stronger, yet more natural HSL adjustments.

4. Re-Imagined Masking Workflow. The masking module, now attached to each adjustment tab contains a comprehensive set of tools including an edge-aware brush, gradient mask, smart feather tool, color aware tool and more.

5. User Interface Design. With Clarity, they have continued to develop a cleaner, more modern and efficient interface to improve usability, workflow and overall aesthetics.

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Clarity will retail for $49.99, but will be available at a special reduced price of $29.99 through May 31st with with this promo code: claritynew

Please use the Topaz link below when going to the Topaz Labs site. 

http://www.topazlabs.com/705.html

I’m an affiliate of Topaz Labs and earn a small commission on any sales made through my referral link which helps me offset the cost of producing SpeedDemon2. 

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