My camera card is suddenly write protected; can't turn that off

Mark Lloyd wrote:
On 03/13/2018 05:55 PM, Paul wrote:

[snip]

The beauty of WP switches, is they're electromechanical
and it's harder for shenanigans to happen. That's a feature
I miss, from having stopped buying SCSI drives.

Paul

A fake WP switch isn't much better. The physical switch is just an input
to the computer (it knows you don't want writing, but it CHOOSES whether
or not to honor that). A real WP switch would actually prevent writing.


True. You have to differentiate in each
case, what type you're dealing with.

The SCSI drive ones were for real. With the
values quite likely to be latched at powerup.

Paul

"Mark Lloyd" wrote in message
...
On 03/14/2018 08:31 AM, slate_leeper wrote:

[snip]

Interestingly, the camera seemed not to notice. While trying things I
moved the card back and forth several times. File delete worked while
it was in the camera only. That's why I thought it was a Windows
problem.

-dan z-

My camera seems to ignore the WP switch too. That's one way I know it
wasn't a real one.

My Nikon SLR and my various Canon compact cameras all refuse to take photos
if the WP switch on the SDHC card is in the Protect position. I hadn't
realised that some cameras allow writing even when the switch says no.

On 03/17/2018 06:02 AM, NY wrote:

[snip]

My camera seems to ignore the WP switch too. That's one way I know it
wasn't a real one.

My Nikon SLR and my various Canon compact cameras all refuse to take
photos if the WP switch on the SDHC card is in the Protect position. I
hadn't realised that some cameras allow writing even when the switch
says no.

Mine is a Canon, about 10 years old.

--
Mark Lloyd
http://notstupid.us/

"Lots of men who would not associate with infidels for fear of
contaminating their characters are not yet out of jail." [Lemuel K.
Washburn, _Is The Bible Worth Reading And Other Essays_, 1911]

"Mark Lloyd" wrote in message
...
On 03/17/2018 06:02 AM, NY wrote:

[snip]

My camera seems to ignore the WP switch too. That's one way I know it
wasn't a real one.

My Nikon SLR and my various Canon compact cameras all refuse to take
photos if the WP switch on the SDHC card is in the Protect position. I
hadn't realised that some cameras allow writing even when the switch says
no.

Mine is a Canon, about 10 years old.

I'll have to dig out my wife's 2003-vintage Canon SLR which she no longer
uses because she has upgraded to a more recent, more feature-rich Nikon. It
will be interesting to see whether that will write to a write-protected
card.

"NY" wrote in message
o.uk...
"Mark Lloyd" wrote in message
...
On 03/17/2018 06:02 AM, NY wrote:

[snip]

My camera seems to ignore the WP switch too. That's one way I know it
wasn't a real one.

My Nikon SLR and my various Canon compact cameras all refuse to take
photos if the WP switch on the SDHC card is in the Protect position. I
hadn't realised that some cameras allow writing even when the switch
says no.

Mine is a Canon, about 10 years old.

I'll have to dig out my wife's 2003-vintage Canon SLR which she no longer
uses because she has upgraded to a more recent, more feature-rich Nikon.
It will be interesting to see whether that will write to a write-protected
card.


Ah, bugger. No, I can't do that. It uses CF not SD cards so there is no
physical WP switch.

After missing several shots because I hadn't noticed that the WP switch had
got moved slightly in replacing the card in the camera, I now always look
for the error code in the display on my Nikon, and always try to take a test
photo on my Canon compacts which don't have an LCD display so the first you
know of the problem is an error on the viewfinder screen after taking a
photo and get a brief "cannot write to card" message.

These days there is a lot to be said for the firmware of camera only
checking the WP switch when you try to delete an already-taken photo (or try
to format the card) and not check it when taking a photo. Cards are so big
that taking the odd unwanted photo is the lesser evil than missing an
unrepeatable photo. Always assuming that you don't want to recover a photo
that you'd already deleted, in which case even taking another photo would
risk trashing the one that you want to undelete.