Godfrey DiGiorgi wrote:

> For 35mm transparencies and negatives, a Spiratone Dupliscope II with
> the negative accessory (can't recall the name) is commonly available on
> EBay for $35-60 and does an excellent job. These units have a dedicated
> flat-field macro lens and use a T-mount to fit to nearly any camera.
> 
> In my experience, more than the equivalent of about 4000 dpi scan nets
> no additional advantage with most films. Only with some very high
> resolution films (exposed to maximize resolution with sturdy support,
> etc) is there any real value gained from the increased scan/capture
> resolution. In fact, the vast majority of hand-held work on standard
> color or B&W emulsions sees very very little gain between 2400 and 4000
> dpi capture resolution. There's just very little additional real data
> there ...

Godfrey, Igor & Mark,

Thanks for your comments.

In my case, I pretty much know I'm looking for the impossible; a much more 
rapid way to transfer slides to digital images. I know that the Epson I use 
does a great job, but it's a slow process, and I have thousands and thousands 
still to do. As I've found from the Epson, larger dpi scans above 4000 tend to 
show up imperfections in - or rather on - slides, such as really tiny specs of 
dust which even with decent cleaning and dust reduction still show, giving more 
work in Lightroom at a later date.

A K3 sensor sized image is really all I need, but it is keeping the quality 
that the scanner provides that is the issue. Some of these scans from slides I 
enlarge to A3 prints after work to correct all the howling errors, such as 100% 
level horizons etc have been adjusted all these years on. The fact I can 
restore or improve pictures taken in the 1970s still amazes me, but now I want 
it faster. Some people, you just can't please.

Malcolm

 


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