More a problem than critique really. When I use my Dimage A2 in RAW + highest quality JPEG file writing, at some point in the run of shots taken, these pink corruption lines appear on the RAW file. They vary in width (usually narrow), sometimes have more than one group of lines as in this case but can be single band of varying width, and vary in position, but are always in the upper third of the image (presumably in the bottom third of the sensor as the image is captured upside down), usually later on in the sequence of photo's (? warmer/hot CF card?), and seems only to happen with RAW + JPEG capture. I've not tried lower quality JPEGs, as this seems to defeat the objective of reviewing and zooming in to assess photo quality which can only be done on JPEGs on the A2 (can any camera zoom in on RAW review??). The bizarre thing is that the then 'processed' JPEG does not have any artefact lines, and appear as a clean image - explain that one. I always format CF cards in camera once files have been backed up. This happens on a Delkin, a Sandisc, a Kingston CF card, and also on a Transcend SD card when using a Maplin SD to CFII converter. Thumbnails in Dimage Viewer do not show the lines. In RawShooter Essentials 2005 and 2006, the lines appear on the thumbnails along the top viewing pane at the end of the upload, when the yellow box around the thumbnail is cleared. The only reference I've see to this in any detail is on the K-M forum section of dpreview, but no answer was given as to why. I've had the camera from new, and it did it from fairly early on, after it started corrupting cards and went back to Minolta for repair for that. I must admit I've not been back to Minolta about it, but back up from them is limited now, and Sony didn't reply when I tried to register as a Minolta user with them! Resizing and compressing has left extra artefacts on the image, but hopefully you can see the problem I'm describing. Anyone come across this problem? Anyone solved it so RAW + best quality JPEGs can still be captured? Does the camera store the RAW file in the buffer memory while processing the JPEG, then write the JPEG before the RAW to CF card, leading to a RAW corruption, as the JPEG is always before the RAW in the sequence on the card. I can't see that it can be a sensor related issue as most RAW images and all JPEGs are fine. Any ideas welcome. I'll email Minolta support as well and see what they think.
|Camera:||K-M Dimage A2 |
|Lens:||28-200 zoom |
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