Thanks for responses.

I had not come across any issues that would cause me concern (cold may not be too much of a problem in this case) but had wondered about the effect of low pressure on displays.

However whilst it will not concern me it might be appropriate to mention that cameras with microdrives would encounter problems.

Michael

John,

Thanks for reply but I'm concerned about altitude, not temperature.

I know computers have a typical limit for use of 10,000 feet because of HD damage risk and higher limits for storage and shipping (though what the difference is between those two I don't know).

I was wondering if low pressure could present any problems for cameras.

Michael

In general terms are there any maximum altitude limits on operating digital cameras?

Is there also a limit on carrying but not actually using them?

I'm contemplating a trip to Tibet which may involve being as high as 17,000 feet (5,100 metres).

Thanks.

Michael

I have a Hoya 80-200 in M42 which is great. Daughter has a 28, good lens except for a palish spot which disappears at wider apertures.

Michael

Mathers appear to be offering body at £549.

http://www.mathersoflancashire.co.uk/page81.html

There are many people, including a lot of climate experts, who believe that the widely-held theories about carbon dioxide and global warning are just plain wrong. Whilst there is a linkage between carbon levels and increased temperatures the increase in carbon comes after increases in temperature rather than before them.

This planet has been experiencing wide variations in temperature for aeons. In fact our current temperatures are less than they were several centuries ago. Leaving this post as a sticky only serves to promote what is quite probably no more than a myth that climate change is man-made.

Please can it be unstuck and allowed to wither and die as it deserves to.

Thanks to all.

Am I right in thinking the Pentax *istD is no longer generally available? Does anyone know of a UK source for one (new or refurb), please?