NikonGear'23

Images => Nature, Flora, Fauna & Landscapes => Topic started by: bobfriedman on June 26, 2015, 21:30:40

Title: IR Filter Comparison for Landscape Photography
Post by: bobfriedman on June 26, 2015, 21:30:40

a while back in 2011 i compared scene renderings using RG-610/630, RG-712, RG-850, RG-1000 and UG-1 filters.

Using scenes from my favorite IR environment at Mount Auburn Cemetery in Cambridge, MA..

The following link contains 17 sequences of filter comparison   http://www.pbase.com/bobfriedman/filter_comparison_mtauburn (http://www.pbase.com/bobfriedman/filter_comparison_mtauburn)

an example of one sequence out of the 17 is below.. .

with images having sufficient red swapped with blue :

RG-610
(http://www.pbase.com/bobfriedman/image/134893439/original.jpg)

RG-715
(http://www.pbase.com/bobfriedman/image/134893440/original.jpg)

RG-850
(http://www.pbase.com/bobfriedman/image/134893441/original.jpg)

RG-1000
(http://www.pbase.com/bobfriedman/image/134893442/original.jpg)

UG-1
(http://www.pbase.com/bobfriedman/image/134893443/original.jpg)

Title: Re: IR Filter Comparison for Landscape Photography
Post by: Bjørn Rørslett on June 26, 2015, 22:45:54

Many scenes do not change much over the NIR band. Thus it's not really surprising to observe that the main influence is getting more even distribution over the channels (meaning sooner or alter there is no red to swap for blue as both are virtually identical) because the Bayer dyes get increasingly trasparent. The sky will darken as well, if you are away from urban environments with their ever-prevailing atmospheric dust and haze.

I was surprised by the colour hues present in the UG1 capture, though. Not using this filter myself, only the B+W 403, that I thought would be more or less the same. Obviously it isn't.

When you do narrow-band IR stacks, sometimes you come across subjects for which the spectral proiperties change rapidly across NIR. Then you can get quite unexpected colour combinations. Such irregularities are rarely captured or recognised when one uses the normal broad long-pass IR filters.

Title: Re: IR Filter Comparison for Landscape Photography
Post by: bobfriedman on June 26, 2015, 23:07:15

probably not the best sequence to have picked for the UG-1 (looks like a tad overexposed).. perhaps this one is better.. the UG-1 can be a bit tricky to get WB and color right.

RG-630
(http://www.pbase.com/bobfriedman/image/135062554/original.jpg)

RG-715
(http://www.pbase.com/bobfriedman/image/135062557/original.jpg)

RG-850
(http://www.pbase.com/bobfriedman/image/135062559/original.jpg)

RG-1000
(http://www.pbase.com/bobfriedman/image/135062561/original.jpg)

UG-1
(http://www.pbase.com/bobfriedman/image/135062564/original.jpg)

Title: Re: IR Filter Comparison for Landscape Photography
Post by: bobfriedman on June 26, 2015, 23:08:36

one of my best UG-1 shots at this location was..

(http://www.pbase.com/bobfriedman/image/127448201/original.jpg)

Title: Re: IR Filter Comparison for Landscape Photography
Post by: Frank Fremerey on June 27, 2015, 00:09:57

As someone with no experience in the field I feel the shots to show a characteristic distinction from filter to filter.

Thank you Bob for showing it to me cluelessly curious.

Title: Re: IR Filter Comparison for Landscape Photography
Post by: Jakov Minić on June 27, 2015, 00:28:35

Bob, to me the images are striking regardless of the filter used :)
I do admit, perhaps because I am using the same, the 630 that offers more colour is the one I would go for...

Title: Re: IR Filter Comparison for Landscape Photography
Post by: Andrew on June 27, 2015, 10:49:05

Very well done!
"630" looks very promising...