I must admit that I tend to finalize all disks I burn, having had problems with multisession disks not being read in different machines. The cost of CDR's is so small now that "only" recording 100 MB on a CD capable of holding 700 MB, doesn't feel like too much wastage!

How old is your PC? What Operating system are you using and what make/model of CD drive is in the PC? I'd expect that newer PC's should handle multi-session CD's without problems. I think from hazy memory that for older OS's there were additional programs you could run to enable multi-session CD's to be read. I'd hope that Apacer Tech support would know.

There's now a DVD version of the Apacer

When you write files to a CD in several different operations, you create a "multisession" CD. Some older computer CD drives cannot read multisession disks, and only show the files from one session. Try using the disk in a different PC.

I am not familiar with the operation of the Apacer, I just looked at it as an option for backup "on the road".

On a PC, you sometimes have the option to "finalise" the disk, which makes it compatible with older CD's, is there anything similar in the Apacer manual?

If I were going to be away from my PC for a long trip, I'd invest in something that would transfer my pics to a CD or DVD, e.g. the Apacer Disc Steno. Hard disks crash far far too often!

Take lots of shots and see what you get! Try every concievable combination of settings, lighting, filters etc. You are now only paying for electricity, not film and developing. And the best results often happen by "accident" . Good luck and enjoy

Looks like you might start a bidding war!

I don't know what effect it has; I suspect that it occurs because Sigma allegedly reverse engineer the camera hardware rather than pay royalties. My sigma lenses (12-24mm 4.5-5.6 DG EX and 70-300mm 4.5-5.6 APO DG Macro) aren't recognised at all, they appear as -- -- --. However I haven't noticed any problems at all and get super results when shooting RAW and converting via Rawshooter premium.

Looks like exactly the sort of gadget of dubious value that I probably don't need but will end up purchasing.

Matt, I think that is probably the best and most succint explanation I've seen on that effect.