Simply put, reflectance is defined as a "measure of the ability of a surface to reflect light or other electromagnetic radiation".
While the polariser hasn't changed the amount of light leaving the surface of the an object, in this case bracken on the hillside, it has remained the same - but the polariser has prevented some of that light from reaching the lens and sensor.
In this case, the striking green landscape of Ireland's Wicklow Mountains, we can easily see the difference between the polarised and non-polarised image.
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This road, closed due to snow in winter and melting under scorching sun in the summer, is a fine example of the scenic drives in Ireland.
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Sycamore is a strong and sturdy tree, able to withstand all that the Irish weather can deliver.
Herds of deer do roam throughout Ireland, particularly in the mountains such as Wicklow where there is an extensive upland with little human habitation and agriculture.
I would normally do a review of the year at this time but, well you know how it is. Actually I did photograph some interesting scenes this year but not nearly as many as usual.
Here, the round tower and small church of the monastic city at Glendalough are seen above the fast flowing river and underneath the rainbow. These stones must have seen plenty of rainbows and rainy weather in their almost 1,000 years in their current positions.
Rainbows can only occur when the sun is located behind the observer, when the sun is low in the sky and when there is rain or mist in the direction of view. The colours are red, orange, yellow, green, blue, indigo and violet.
Sunlight enters droplets of water in the atmosphere and is reflected back, undergoing refraction as it enters and leaves the water.
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Ireland's Wicklow Mountains are amongst the most visited in Ireland; situated just a short drive south of Dublin the Wicklow Mountains offer access to expansive landscapes like in this panorama overlooking Lough Tay.
I have written about Wicklow before, especially Glendalough and also indeed of Lough Tay.
This lake is also known as the Guinness Lake, the estate in which it sits used to be owned by the famous Guinness family and has recently been sold.
It looks exceptional on a fine, sunny day with no wind and a big blue sky above filled with white clouds but usually this lake is choppy with the strong windy gusts sweeping across the treeless mountains.
This part of Ireland is also out of bounds for now, the movement restrictions placed across the country due to Coronavirus / COVID-19 mean that few people have legitimate reason to visit this remote area.
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