Excellent photos!
What does the ISO do? The higher the ISO level the blurrier the image, according to my cameras manual.
Well without being too technical, ISO can be related to “sensitivity” to light, a low number is a lot less sensitive, a high number a lot more sensitive, so, if you select a low ISO number the shutter need to stay open longer to let enough light in to produce an acceptable result, the bummer being long shutter speeds can result in blurry images due to camera shake, its preferable to use a high shutter speed or stuff will appear blurry, the down size of using a high ISO is that the picture will start to appear more “grainy”, so, its down to personal choice but I prefer to use ISO 200 under normal conditions, normal being dull and over cast at EDI, but, I have noticed that sometimes, and I mean sometimes if its sunny here (EDI) then using a low ISO is ok, but occaisionally white or very light fuselages are just obliterated, so I wanted to see by using a very fast shutter speed (by upping the ISO or sensitivity) if it would help, and my results for EDI today have shown me that stuff has come out better by adjusting the ISO, I’ve also tried “stopping” down the aperature to compensate for really sunny days but wasn’t happy with the results. ISO 100 is a cracking setting for quality but sometimes cant produce a fast enough shutter speed for my liking
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