Yeah, something I have noticed. You? Your level of true water hydration affects your vision. Whooda thunk.
Water. Basic need...required for life as we know it, so far, on this planet at any rate. The more pure the better. I'd drink DI if I could.
My mom and I used to talk about all kinds of physiological conditions and effects as I was growing up. Training of muscles, exercising various functions the brain, range of motion, psycho-physiological considerations, you name it. Always asking questions; always studying. I miss her. We'd have been more batshit than we already were had we enjoyed the likes of today's Internet in the '70s and '80s.
Given that lack of the 'Net, I was plastered to books of all kinds. We both were. I had always figured I 'ruined my eyes' by spending so much time at that limited focal length. Of course I don't truly specifically believe this in terms of direct cause and effect but it does merit consideration when you consider range of motion of a given muscle or joint loses effectiveness if overworked in a certain way and not fully extended, even stretched a bit. Mus hav balance, grasshoppah. Yeah...phuk dat. Lolz. Gallon of ice cream and a bag of cookies, anyone? Vegan/gluten-free of course.
Despite a need for corrective lenses in my teen years I have always tried to limit the time spent wearing them...to driving, movies and the like. Nearsightedness...but the proverbial squint worked and still works well enough at times, depending on quality of available light. I do exercise them, forcing far focus as possible when I think about it. That was my understanding from age 15ish to about age 4...3?
Then something happened. My @#$*&%# partner put a camera in my hand. A real one, not one of these stupid, quickie-phoney things. Something that required a bit more attention, precision. Do you wear glasses? How annoying is it to shoot with your lens-corrected eye (glasses, I haven't tried contact lenses in over 25 years) to the eyepiece? Right?! Have an astigmatism? Yeah, I developed one in the last decade or so, in my right, dominant eye. The eye I shoot with. Diopter adjustment on-camera you say? OK, fine, but Pff...even professional cameras can't correct for astigmatisms.
S0o...in the pursuit of making the capturing of light with a lens and sensor a wee bit easier and more effective, as always, more acute attention must be paid to anything and everything related.
During the first year of my running around with said equipment on a daily basis I started to notice that some days were easier than others in terms of 'finding focus'. I do switch eyes, too, depending on the situation, which gave me double the information to go on.
Footnote/random thought - ever notice how each of your eyes not only focuses differently, but how the color temperature and/or saturation differ from one to the other? Of course, when you are post-processing your brain compensates for this difference by 'averaging'. Or something. I dunno. Maybe later. I need to read up on color blindness as well.
Where was I...the point. I started paying more attention to those things I thought might affect my ability to focus. Internal, external, environmental, with camera or without. Humidity, sunlight, breeze, you name it. Anything that can affect your vision. It actually did not take too long to figure things out as I am fairly disciplined at drinking up to a full gallon of water per day; if I don't hydrate I notice it. I noticed that if I am not hydrated I have a (sometimes much) harder time focusing, which can obviously make capturing a scene more difficult, or you can lose those little moments that can already be hard to catch.
©2019 Michael Pichahchy
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