North Cornwall Coast
*ist D 1/750 @ F8 200 ISO

Thank you for the 2nd place, the picture was taken on the travelator that takes you to the Waterloo & City Line at Waterloo Station. It was taken as part of a job for a company that audits LUL advertising.

Well done to John & Lilly and all the other entrants

50mm 1/250 @ F2.8 400 ISO

Thanks for the reply, it is baffling me!

The 1st time it happened: the images straight from the cameras are uploaded to my laptop running vista, the average file size was 4mb.

The second time it happened the images straight from the cameras were uploaded to a PC running vista, average size 4.5mb.

Last night [as a control] we took images, uploaded them straight from the cameras to a PC running XP, average file size 4mb.

The images in all cases are literally put into a folder [hard-drive] no editing at all, the folder contents are then copied into another folder [PC] - these are then get edited. I've never 'saved as' anything, always working in jpeg.

From what you've said it certainly appears to be something that happens outside the cameras, it can't be a coincidence that 4.5mb is the biggest file I'm getting.

Does anyone know if the loss of file size will affect the quality when blown up? I've looked at a pre-problem [9mb] & post-problem [3mb] image in PPX at 600% magnification & the difference isn't that vast ...

Since getting my K10D [about a year ago] my average jpg file size has been around 9mb - up until 2 weeks ago, now out of a series of around 400 images the average has fallen to 3mb.

The largest file from a set 2 weeks ago was 13mb, the largest file this week is 4.5mb

Myself & my partner both have K10Ds and this issue is similtaneous to both cameras. Which seems to point to something other than the camera!

The settings on each camera are always at a constant at 10mp [3 star jpg quality] we use the same set of lenses - no changes there.

Shooting RAW+Jpg the RAW file is 9mb the jpg 2mb

One of our home computers runs Vista, a recent addition (last 3 weeks) we use this PC to upload the images but having tested some images taken this evening uploaded to a PC running XP the issue remains.

We've reset factory settings on one camera, this had little or no effect on the file sizes.

The only other factor I can think of is the memory cards, we re-use these every week, [re-formatting before each new job] ...

Does anyone have an idea as to why the file sizes are suddenly reduced?

My first top three placing thank you

Our Local Co-op, where my daughter [nearest the left-hand aisle] is a 'shop keeper' [otherwise known as a shop assistant ]