Back Modifications (4)
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Otter's Tunnel

By PhilAJ    
Tunnel under a railway cutting in Dibbinsdale Nature Reserve, Wirral.

Merged 3 images using HDR

Tags: Tunnel Landscape and travel Dibbinsdale

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banehawi Plus
15 2.1k 4020 Canada
11 Aug 2019 4:50PM
Hi Phil. IF you have the "middle" shot of the set you used for HDR still could you upload it here o this page? Just click modifications and upload it.

If not, just let us know



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mrswoolybill Plus
12 1.5k 2066 United Kingdom
11 Aug 2019 6:39PM
You've done pretty well I think. I've uploaded a mod with shadows lightened, highlights darkened and contrast reduced. I think it's an improvement. Lightening shadows gives a better sense of the structure immediately before we leave the tunnel.

I have to say that in photographing a very similar scene I have achieved similar results with a single Raw exposure, processed carefully for the light.

PhilAJ 12 95 United Kingdom
11 Aug 2019 7:51PM
banehawi - I've uploaded the mid point, before cropping

Moira - Yes I like what you have done. Guess it's 'in the eye of beholder'...I think I was trying to make the tunnel as dark as possible, the light and reflections reminded me of a 'comma' in the dark !!

Thanks both for comments
chase Plus
14 1.1k 249 England
11 Aug 2019 7:56PM
I can see why you have included lots of the darkness but for me it's just a bit too much. I did a mod.
A difficult place to do HDR, as the exposure will be hard to calculate.
Well done for having a go.
I do see what you are trying to achieve.
PhilAJ 12 95 United Kingdom
11 Aug 2019 8:26PM
Thanks Chase, like what youíve done. Maybe not quite what I was looking to achieve but itís a good alternative view.
banehawi Plus
15 2.1k 4020 Canada
11 Aug 2019 9:20PM
Thanks for uploading the :base" shot Phil.

I wondered initially why such a high ISO was used, and it helps me understand.
I think, having so much darkness with a relatively small amount of light area caused the camera to select ISO 3200, IF you had Auto ISO enabled, and had also set a MINIMUM shutter speed.

Ideally, with the goal of HDR in mind, you would set ISO at 100, aperture at whatever you needed (slightly stopped down more would be best), using a tripod, manually focus, and then the exposure compensation to provide the + and - shots, each one then with the same ISO, same aperture, and different shutter speeds. Metering off the brightest area would be a good start, so a partial metering that weights the centre (perhaps even a spot, - I think the 80D allows you to use a larger than normal spot?) would give the best result.

What HDR should do id give an expanded range of darks, and a well controlled range of highlights, neither of which seems to have occurred.

I like the concept, so perhaps worth another attempt?

I did rotate the image a little, altered white balance to be warmer, less magenta in a mod.

Your final shot is a much closer crop than the original set of shots also, - so that only contributes to magnifying noise, - something best avoided!

Hope this helps,


PhilAJ 12 95 United Kingdom
11 Aug 2019 11:26PM
Thanks Willie - some useful advice - I may well revisit and try that again.

dudler Plus
16 895 1504 England
12 Aug 2019 10:20AM
I won't cover the same ground as others - I will suggest, though, that your middle exposure shot looks better than the HDR image - it seems richer, tonally.

Also, AWB often gives a rather blue look, as it has here.

Definitely worth repeating the exercise!
paulbroad Plus
12 131 1285 United Kingdom
12 Aug 2019 9:11PM
f you are achieving what you want, you don't need critique. If you used three exposures, you must have been on a tripod, so why not 100 or 200 ISO. There is still evidence of burn out in the highlights so your highlight exposure was still too much.

Willie covers all.

PhilAJ 12 95 United Kingdom
13 Aug 2019 8:54AM
Paul - Thanks for feedback. I'm still a learner in some techniques - you are right it was on tripod and less ISO would probably have been better.


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