Latest or all posts or last 15, 30, 90 or 180 days.
Upgrade the memory of your 2019 iMac up to 128GB
Handpicked deals...
$3698 $2998
SAVE $700

$2397 $1897
SAVE $500

$1199 $898
SAVE $301

$1299 $1169
SAVE $130

$4499 $3999
SAVE $500

$1399 $1099
SAVE $300

$1499 $1299
SAVE $200

$4499 $3149
SAVE $1350

$2299 $1599
SAVE $700

$2498 $2198
SAVE $300

$1799 $1379
SAVE $420

$2998 $2498
SAVE $500

$1299 $1124
SAVE $175

$2199 $1999
SAVE $200

$430 $220
SAVE $210

$3399 $2299
SAVE $1100

$6299 $3599
SAVE $2700

$398 $278
SAVE $120

$1499 $1019
SAVE $480

$1279 $719
SAVE $560

$1699 $1549
SAVE $150

Cosmic Radiation Can Cause Pixel Defects

From the Leica M Typ 240 / M240 user manual:

Sensor — Cosmic Radiation can cause pixel defects.

Please remember that the next time you travel to the moon. I think it’s cute that Leica has included this important note in the manual. I’m not aware of any other camera vendor that bothers.

Seriously, flying in an airplane or traveling to high elevation subjects you and your camera to a substantially higher risk of a few cosmic rays than at sea level. Computers are subject to “bit flips” for the same reasons.

Jeff H writes:

Oh yes this is true.

It used to be that when I flew with my D3x, it ended up with a couple dead pixels per 10,000 miles which after a while I took to Nikon Ginza to map out. After a few round trips, it got me thinking. Perhaps X Rays, Cosmic Rays, Radiation etc can zap the circuitry. Otherwise how would these damages occur? With the D3x priced at what it was, I could not take any further chances.

Soon I crafted myself 2 pieces of 8x10 Lead sheets which I wrapped the Camera + Body Cap (sans the Lens).

The security X-Rays are also a source of potential havoc, so first time thru, the Lead wrap would always elicit an open and search.

Although I never had any problems with the guards, the X ray safe shield bags for Film from the yesteryears may raise fewer eyebrows at airport security.

Mind you I think the D3x was more sensitive to this and was more prone to stuck pixels than other cameras.

I had a gut feeling that operating Live View also aggravated this problem but was not able to verify which was the major contributory cause.

On the same note, I think sensors of today are more resistant, and less prone such errors now. Although depending upon the pricing of future D4x and likes, I may want to continue to err conservatively.

DIGLLOYD: interesting anecdote!


MacPerformanceGuide.com
View all handpicked deals...

Nikon AF-S NIKKOR 24-70mm f/2.8E ED VR Lens
$2397 $1897
SAVE $500

diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2019 diglloyd Inc, all rights reserved.