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Comment: Re:Parallax. (Score 1) 424

by graphius (#47924065) Attached to: Apple Edits iPhone 6's Protruding Camera Out of Official Photos

Hi, welcome to the world of 10mm-1000mm focal length telephoto lenses. ...

There are 10mm lenses and 1000mm lenses, I would love to be proven wrong about a zoom lens from 10mm to 1000mm for a decently large sensor. And apertures for astronomical telescopes usually work out to fairly sedate f10. This lens has an extremely fast f5.6. PS a 10 mm eyepiece is NOT the same as a 1000mm focal length lens for "shits and giggles" Angeneux won an academy award for the unprecedented 12-120mm lens with an unheard of 10x range. Sorry, do your homework and learn the difference between a zoom lens and a telephoto.

Comment: Re:Parallax. (Score 1) 424

by graphius (#47921719) Attached to: Apple Edits iPhone 6's Protruding Camera Out of Official Photos

never heard of mount adapters to use manual lenses from much older 35mm SLR cameras

Yes, and I have still never heard of a zoom lens with a range greater than 16 times. Most film zoom lenses maxed out at 4X

I understand perspective just fine,

I meant to say parallax, but you don't really understand either. Read farther down on the example of a chimney on a house.

Try this. Use a very wide lens, say 20mm on a full frame camera.

Bring the phone close to the camera so it fills the frame.

shooting edge on, and with the screen on top, tilt the phone up until you just see the screen.

You will not see the bump on the bottom.

or more blatantly, hold a coffee cup close to your face. Can you see the top and bottom? no. This is the same affect. or look up perspective especially single point perspective

Comment: Re:Parallax. (Score 4, Interesting) 424

by graphius (#47921273) Attached to: Apple Edits iPhone 6's Protruding Camera Out of Official Photos
But... but... he has a 26X Optical Zoom on his DSLR Whatever the fuck that means. If he really has a DSLR (Digital Single Lens Reflex) I am not aware of a zoom lens with a range greater than 16x (18-300) You do know that the multiplication factor means the longest focal length divided by the shortest. Or maybe he meant 26x magnification at the sensor plane, in that case, he must be using a crop frame sensor with an 850 mm lens (approximately) or more likely, a 500mm (mirror) lens with a 1.4x converter He spent all that money on photography gear and still doesn't understand perspective...

Comment: Re:TI calculators are not outdated, just overprice (Score 1) 359

by graphius (#47825019) Attached to: How the Outdated TI-84 Plus Still Holds a Monopoly On Classrooms
This is one of the biggest problems with our education system. We tend to teach memorization rather than understanding. I read a quote somewhere recently, "Our brains are factories, not warehouses" yet we, as a society, tend to treat them as storage devices...

Comment: Re:$230 (Score 1) 611

by graphius (#47734009) Attached to: Study: Ad-Free Internet Would Cost Everyone $230-a-Year

I think some sites should try direct sponsorships with a single or a few corporations.

or going the other way, maybe we could try to guess peoples wants and then just show specific ads on a site catered to that guessed want. We could call this process "targeting ads" Unfortunately I am not sure how well we could guess the wants of random users...

Comment: re: $230 (Score 1) 611

by graphius (#47733957) Attached to: Study: Ad-Free Internet Would Cost Everyone $230-a-Year
posting to fix a botched moderation, but also to say that I don't follow the methodology in the summary (no I have not RTFA). Just because advertisers are paying doesn't mean USERS are paying anywhere near that amount. I understand advertising and marketing better than many, but I I think most companies pay too much for advertising for too small a payback.

If you have to ask how much it is, you can't afford it.

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