IFF (intelligent frame finding) with 35mm slides problematic

[owl]

Hi,

Setup

Ever since I got my PowerSlide 5000 in late December, I have been using the auto frame detect for scanning slides, which enables me to avoid the task of rotating the "portrait" slides. I am even willing to sacrifice the 20000 frame scan warranty by half, since the prescan is counted as a scan. I am willing for the scan process for the "portrait" slides to add 30% additional scan time (versus "landscape" orientation).

I initially found that IFF had troubles sometimes, so I set an outset of 2%. This created a rather large black boarder, but better than trimming off some of the picture. For sunsets, IFF is hopelessly lost with the dark foreground, and I accept that. Even though I can see the slide edge boundary, IFF apparently can not, given the options I have set.

What I have found over the course of scanning over 1600 slides, is that the defect rate of under scanning a slide is about 7%. Defects are easily found by checking for smaller file sizes. Sure, some of these defectively scanned images are sunsets, under exposures and such, but many more are just normal images. Perhaps with significant detail on an edge (of which some of this is dark, such as tree or branch detail at the boarder), but certainly not uniformly dark, and obviously should not be trimmed off.

Over the last day, I have re-scanned the 122 defectively scanned images (with fixed frame, auto detect turned off) and have converted my work flow to rotating the vertical images and setting a fixed frame.

Question

Is there some configuration setting I am unaware of that would improve IFF operation when scanning 35mm slides?

In support of 35mm slide images, is there some way for the user to set a fixed frame size and have IFF locate the portrait or landscape image and best fit that to the fixed frame size?

Using fixed frame, I have loaded the over scanned images into HDR with auto frame detect turned on. Only for a few slides does it tighten the frame. Does HDR need a minimum of black boarder before it attempts to fit a new frame?

Thanks in advance.

[LSI_Ketelhohn]

Dear customer,

Please make sure you are using the latest update.
The frame finding does not have any additional settings.

Kind regards,
Arne Ketelhohn.