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Is my vision that bad? No, it's just a bug in Apple's Calculator

martin.wojtczyk.de

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Re: Is my vision that bad? No, it's just a bug in Apple's Calculator

#71

Post by KineticLensman »

djbusby wrote: post #35

Maybe now is a good time to remind everyone: your vision will deteriorate. Keep this in mind when designing. When I first came to HN it wasn't an issue. Now I have to use my own app for it so the font (and some other things) are workable. According to my eye doctor the screen time is causing eyesight issues earlier. We're not designed to stare at a bright light 40cm away all day. May want to look at some eye exercise…

Just want to endorse this point about considering accessibility when designing interfaces. Small low contrast fonts are a real pain as you get older.

Re: Is my vision that bad? No, it's just a bug in Apple's Calculator

#72

Post by zimpenfish »

dustincoates wrote: post #31
trilbyglens wrote: post #22

Earlier quoted context omitted.

This is not a software bug, but rather an optical phenomenon called "chromatic aberration". What's happening is that your glasses are bending light at different angles depending on the wavelength, to the red and blue and green are landing at slightly different places on your retina. It's a hard problem to solve optically and requires specially shaped lens. It's a common issue in telescopes, with higher end expensive…

Is this why, when I'm reading text on a dark background, red will appear on a different plane than white? I was just wondering the reason last night.

Sounds a bit like https://en.wikipedia.org/wiki/Chromostereopsis

> Another interesting reversal effect was observed in 1928 by Verhoeff in which the red bars were perceived as farther away and the blue bars as protruding when the bars are paired on a white background instead of a black background.

Re: Is my vision that bad? No, it's just a bug in Apple's Calculator

#73

Post by zerocrates »

dustincoates wrote: post #31
trilbyglens wrote: post #22

Earlier quoted context omitted.

This is not a software bug, but rather an optical phenomenon called "chromatic aberration". What's happening is that your glasses are bending light at different angles depending on the wavelength, to the red and blue and green are landing at slightly different places on your retina. It's a hard problem to solve optically and requires specially shaped lens. It's a common issue in telescopes, with higher end expensive…

Is this why, when I'm reading text on a dark background, red will appear on a different plane than white? I was just wondering the reason last night.

I have pretty strong high-index lenses, and definitely can get a kind of 3D effect.

The classic terminal blue and green text colors on a black background is the situation where I first noticed it: moving my head makes them shift in different directions giving a parallax or depth effect.

Re: Is my vision that bad? No, it's just a bug in Apple's Calculator

#74

Post by krispyfi »

dustincoates wrote: post #31
trilbyglens wrote: post #22

Earlier quoted context omitted.

This is not a software bug, but rather an optical phenomenon called "chromatic aberration". What's happening is that your glasses are bending light at different angles depending on the wavelength, to the red and blue and green are landing at slightly different places on your retina. It's a hard problem to solve optically and requires specially shaped lens. It's a common issue in telescopes, with higher end expensive…

Is this why, when I'm reading text on a dark background, red will appear on a different plane than white? I was just wondering the reason last night.

https://en.m.wikipedia.org/wiki/Chromostereopsis

Re: Is my vision that bad? No, it's just a bug in Apple's Calculator

#75

Post by saagarjha »

akerr wrote: post #45
manoweb wrote: post #39

I’m pretty sure there are Apple employees that read HN. It would have been cool to include a build number of the OS

Or, you know, file a Feedback: https://www.apple.com/feedback/macos/

Don’t do that.

Re: Is my vision that bad? No, it's just a bug in Apple's Calculator

#76

Post by kortilla »

mrob wrote: post #42
dylan-m wrote: post #14

One of my favourite unreported MacOS issues comes from how, at some point, they changed the appearance of the window close button to be a particular shade of red with a tiny little X in the center. And if you happen to be using a particular kind of screen and possibly wearing glasses, that little X kind of wanders around in the button, appearing just slightly off center in a maddening way. Made only more maddening by…

>More expensive lenses have a coating to compensate for this chromatic aberration. You can't compensate for chromatic aberration with a coating. You need a compound lens made from multiple elements each with a different dispersion, e.g.: https://en.wikipedia.org/wiki/Achromatic_lens More expensive glasses lenses usually have worse chromatic aberration than cheap ones. The cheapest material for glasses lenses (PADC, o…

Can you link to something to buy?

Re: Is my vision that bad? No, it's just a bug in Apple's Calculator

#78

Post by johnwalkr »

dylan-m wrote: post #14

One of my favourite unreported MacOS issues comes from how, at some point, they changed the appearance of the window close button to be a particular shade of red with a tiny little X in the center. And if you happen to be using a particular kind of screen and possibly wearing glasses, that little X kind of wanders around in the button, appearing just slightly off center in a maddening way. Made only more maddening by…

When I got an ultra wide monitor I also noticed this for the first time on the macOS circular red X button, when wearing glasses. I guess a wide monitor has you looking at things off-axis more. It is really remarkable how much you can make the X dance around the red circle by moving your head. There's something about the colours and simplicity of that particular icon that really cause the effect. The effect is almost non-existent if you're looking at a more complex image, so I guess it's also remarkable how much your brain compensates for chromatic aberration in most contexts.

Re: Is my vision that bad? No, it's just a bug in Apple's Calculator

#79

Post by mattlondon »

darkwater wrote: post #40
tanelpoder wrote: post #4

Haha, off-by-one pixel error! I still see MacOS as the best choice for my desktop/laptop uses (browser and SSH), but I also have a documents folder that I’ve accumulated over decades. I still use various .txt files in the docs folder as my low tech note taking apps. I use the Spotlight or Alfred keyboard shortcuts (that also use spotlight index?) for quickly opening the files when needed - and annoyingly my most impo…

> I still see MacOS as the best choice for my desktop/laptop uses (browser and SSH) If it' just "this", Linux is perfectly capable and IMO even superior.

Just a cheap Chromebook would probably be even better IME - nothing to worry about, it is really very much just a keyboard and screen and gets out of the way.

Less can be said about your typical Linux experience in in the 2020s where you will still inexplicably find yourself having to mess around trying to get Bluetooth/audio/webcam/sleep working reliabily.

Re: Is my vision that bad? No, it's just a bug in Apple's Calculator

#80

Post by johnwalkr »

eru wrote: post #46
tanelpoder wrote: post #4

Haha, off-by-one pixel error! I still see MacOS as the best choice for my desktop/laptop uses (browser and SSH), but I also have a documents folder that I’ve accumulated over decades. I still use various .txt files in the docs folder as my low tech note taking apps. I use the Spotlight or Alfred keyboard shortcuts (that also use spotlight index?) for quickly opening the files when needed - and annoyingly my most impo…

> I still see MacOS as the best choice for my desktop/laptop uses (browser and SSH), [...] Almost anything will do for those?

Recently windows has become much better for things a linux or macOS user takes for granted, like using ssh (a quick google search tells you how to install it using powershell), but is missing a lot of features. Two recent examples for me are taking 5 minutes to figure out how to install and use rsync, and taking 10 minutes finding a program to add/delete pages from a pdf file that's not a trial or demo of some kind.
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