I'd like to upload one of the apparently corrupt RAW files so other people can take a look - where is the best place to do this? I do not have any webspace.

Well I fell victim to an uncommon problem in that case. Would seem a useful feature for DSLRs to have a feature that verifies a file's integrity after shooting, do any of them have it?

Thanks for the link advice.

How do you safeguard against SD card failure?

I shot my first (paid) wedding today and after taking every precaution that I thought possible i.e. buying a second camera body as a spare, extra lenses, spare radio triggers and lots of practice and research I was seemingly kicked in the balls by what looks like an SD card failure.

This is the first time it has ever happened to me and I am gutted - I can't envisage how it could have been prevented as the previews were showing up on the camera after every shot so I presumed everything was fine. Typical that in 1000's of photos shot the first ones to fail were at a wedding

Fortunately I anticipated every eventuality and spread my shots across 3 memory cards ( even though I have never had an SD card fail before ) so the shots lost are only about 30% of what I did. But typically they were the crucial group family shots. I really am gutted about this.

Anyway - the files still preview on the camera so the embedded jpg in the DNG RAW file is still intact, but when I try to import to LR or open in PS I just get file corrupt messages - also when trying to convert the RAW with the card in my K-5 to a jpg it throws an error.

I have read that the RAW file contains a fairly acceptable jpg preview image that although not ideal is at least something. I have yet to find a program that will extract this for me, can anyone help?

Also - a question for you wedding togs out there - how can you protect about such an eventuality happening? If an SD card fails but the previews still show on the camera then how can you know?

I hope someone can help.

I'll try that later Matt and post the images, thanks. But that wouldn't explain why the shots came out perfectly on my GX20 (K20D)

Excellent Matt, can I send you some test shots so you can look at the EXIF?

I'm not using a Metz, I'm using a Pentax AF360FGZ

I'm hardly going to be happy spending £200 on a flash to have it stuck on manual mode. Not much use when trying to grab a snapshot at an event.

Clearly not in many users experiences. My GX20 works perfectly using the same flash.

Having done some Googling it seems that this is a inherent problem with the K5 - I can't believe that Pentax haven't sorted it yet.

ISO 200

I have taken some examples. It seems that the effect is at wider appertures.

Flash facing forward:



Flash Pointing up at 45 degrees



Flash Facing Forward



Flash Pointing up at 45 degrees



This problem does not occur if I do exactly the same thing on my GX20 (K20D)