Have my K10 set to up for 3 image bracketing (+/- half stop), centre weighted metering and usually shoot in raw.

This last weekend went down to Stourhead and had a busy 3 hours. When I got back and down loaded the images, it became apparent that a number of the triples were missing 1 or more of the set! Most ocasions it was the initial image - but I did have 1 or 2 cases where the missing images also included one of the others. Most gaps appear where I'd not been trying to follow straight on ie the likely cause wasn't a full buffer.

Grateful for any thoughts as to why this may have happened.


Steve

I've not used my Coolscan V for anything other than slides. I find it takes about 2 hours to preview, scan and save the files from a roll of 36. If you can get a work flow organised, you can clean each slide with a blower to get rid of the dust and clag as the previous one is previewing, and load the last slide into an archive pouch. Strips of film probably won't be much quicker - I'd clean the film first as using the scanner to do so just adds to the time.

I use PEC-12 with a cotton bud for my cleaning - shifts most things but not the emulsion


Steve

Lilly - pl also expect the projected image to be a less than perfect representation of your work. Images will appear "over exposed", so a lot of the richness of the colur will be lost - the lap top screen will look OK though and sometimes you may feel it useful to swing the lap top round so the audience can see it. As the audience is a camera club, they will be already aware of the limitations of the equipment from previous presentations.


Steve

Thanks Martin.
Had a look on Sigma's web site. The 150-500 is 1.9kg where as the 170-500 is a mere 1.3kg. SRS are doing it for £100 or so more than the 170 variant. Not sure I'm bothered enough to pay another £100 for 600g of metal and glass to gain 20mm at the lower end of the range. A 1.3 kg lens is a fair old lump and when space and time is limited, the extra weight may be more of a liability, especially if you can't deploy a monopod to help with stability.


Steve

Haven't been able to find any reviews, so wonder if anyone has any experiance with this lens?

I understand that a zoom lens is usually best if the ratio between shortest and longest focal length is 3 or less. I've got an FA 80-320 which covers most uses where a a long reach is desirable - but having used this with pretty good results with my K10D in the Kruger in January, a little extra is useful and the 170-500 would give me a 245-750 equiv.

Grateful if any experiance/thoughts anyone may have


Steve