Tag: overexposed

More HDR Exploration

Posted on by Nick Roberts
This image was created using 5 exposures +2,+1,0,-1,-2, EV
This image was created using 5 exposures +2,+1,0,-1,-2, EV

Click on any image in this post to open it in a new window.

Today I am going to share several versions of one image to further illustrate the HDR process. In the image above I combined 5 exposures using NIK HDR Efex PRO 2. I then started with one of the realistic presets in NIK HDR Efex PRO 2 which I adjusted to my vision for the image. After getting it where I wanted it I created a custom preset that recorded all the adjustments I made to the image. I named the custom preset Pine Mountain #2 and saved it in the custom preset panel in NIK HDR Efex PRO 2 so that I could use it with any image I chose. I then started applying it to some of the single frames from this scene.

I’ll start with this frame which is the -1 EV underexposed frame. As you can see it is very dark and lacks detail in the shadows.

-1 ev exposure
-1 ev exposure

Below is the same image with the Pine Mountain #2 preset applied. It opened up the shadows and brought out a greater color range as well as some shadow detail.

-1 EV after applying Pine Mountain #2 preset
-1 EV after applying Pine Mountain #2 preset

I followed the same process for the 0 EV exposure below. This exposure has better shadow detail than the underexposed frame but it is beginning to show some blown highlights in the upper area, notably the small amount of sky and the mountain laurel leaves.

0 EV exposure
0 EV exposure

Once again I applied the Pine Mountain #2 preset I had created earlier to this single frame which produced the image below. There is now more detail in the shadows, the colors are richer but the sky is starting to gray slightly.

0 EV after applying Pine Mountain 2 preset
0 EV after applying Pine Mountain 2 preset

Lastly I used the overexposed image with the +1 EV and followed the same procedure with it. Once again the highlights are blown in the sky and on the leaves as well as on the rocks themselves.

+1 EV exposure
+1 EV exposure

This is the overexposed image after applying the Pine Mountain #2 preset.

+1 EV exposure after applying Pine Mountain #2 preset
+1 EV exposure after applying Pine Mountain #2 preset

Once again there is marked improvement both in the highlights and in the shadows but it still isn’t as rich as the first image in this post that was created by merging multiple exposures in NIK HDR Efex PRO 2.

My conclusion from this experiment is that; while there is increased detail in the shadows, better highlights and increased tonal range available when using NIK HDR Efex PRO 2 on a single image; the use of multiple exposures produces a richer more detailed image. I stand corrected regarding my earlier post about the differences in single vs multiple image HDR processing and the results that are attainable.

I hope this helps my readers and that they benefit from my exploration and experimentation with the NIK HDR Efex PRO 2 software. I feel certain that these results are repeatable regardless of which software is used be it Photoshop, NIK, Photomatix or any of the myriad of other HDR programs out there.

1948 Pontiac

Posted on by Nick Roberts
1948 Pontiac

I went back into the vault for this image. I shot this several years ago but I had never done anything with the image. The original file is a little overexposed and judging by the shadows it was probably shot in the middle of the day. I liked the camera angle but the colors were very washed out. I wanted to try a psuedo HDR approach to see if I could give it some depth.

Yesterday I started by using NIK HDR Efex Pro 2 on it to see what I could create. I tried several different presets and finally settled on Deep 2 as the start point for finishing the photo. I then adjusted several sliders which really brought out the clouds as well as revealing the green reflections under the headlight. Some times when working on an image with the adjustment slider I will simply grab the slider and move it all the way to the right or left to see what happens. Most of the time it is way too much but I liken it to having an eye exam where the doctor places two sets of lenses in front of you and asks “better here or better here?” when trying to find the right combination for your vision. Once I know what the extreme effect is I can then decide whether to use that adjustment slider or not. If the effect is in keeping with my vision for the image I can then dial it down and fine tune it’s effect.

I was pleasantly surprised at the way the sky came to life after the initial adjustments in NIK HDR Efex Pro 2 but there was still a problem area on the left side of the image. Just to the left of the headlight there was a red car that was drawing my eye away from the rest of the image. I returned it to Aperture 3 and then I took the image into NIK Vivesa 2 where I used a couple of control points placed on the red car to desaturate the red of the car. After that I took the image back into Aperture 3 and finished it with a little tweak to the vibrancy slider and some minor sharpening.