And i asked question on some of those forums and never answered me,
Wow, this one got contentious but quick...and out of nowhere.
sorry if my reply sounded contentious. Its just that it has been done over and over and the results are easily found by searching.
I have made a number of posts where I feel that with anything short of a 5DMkII you'll get inferior results to even an Epson 4990, you won't have the control you won't have dust removal, they lack the range needed for recording negative and you won't have any automation.
I use a DSLR for copying text in books and magazines (as do commercial machines) but for copying film you have different criteria
naturally people will long to do this and if that's their choice then its really up to them. I do recall one post where someone posted some benefits ...
if you develop a workflow then please by all means publish it, I'd be happy to work with the results and even make a comparison scan on my gear here ... all for the love of it.
So should my workflow should include a 5dMII or a scanner to get from film to digital. I have many LF film files from 6x17 to 8x10. Also want to convert 8x10 glass plates as well as do reversal. I was thinking iof buying a professional drum scanner
I'll be interested to see you get 12,000 x 9600 pixels out of the 8x10 plate using your 5DMkII
While not practical for high-volume work, there's no reason one couldn't shoot the 8x10 in 4 or 6 or even 9 sections. 9 sections is still between 1:2 and 1:3 reproduction ratios. Pretty easy to achieve with just extension tubes (or a dedicated macro, of course).
...
I have thousands of slides and negatives that I've wanted to digitize for a while now. I began to digitize them with the first scanner I owned that had enough resolution to consider doing so. It was an Epson 3170, with a max optical res of 3200 ppi, and it did a decent job, but I could tell when examining my slides under a loupe that I wasn't getting all the detail. So eventually I upgraded to an Epson 4990, which has a claimed max optical res of 4800 ppi, but which in fact doesn't have a much better resolution than the 3170 does. I determined to my satisfaction that my 4990 scans at about 2000 ppi.
don't forget to factor in barrel distortion which your lens will introduce to your "scan"Problem with using a "digital slide dupicator" with your DSLR is the resolution is dependent upon the zoom lens you're using. And chances are you'll need to use
Now, my DSLR is just a cheezy, entry-level Canon with 10.2 mp of resolution. This translates into about 2600 ppi of true image resolution, which is better than any flatbed that I know of.
well I don't know that I said that, I merely mentioned that it was one of the factors which you need to factor in ... if its not a problem for you then its not a problem.In an earlier thread, where I mentioned that I used this rig, pellicle commented that this setup couldn't compare to a scanner that you can load up with a bunch of slides or negs, set things up, click on scan and then walk away from the scanner for however long.
the speed advantage may tip the balance of the effort / benefit analysis, but the difference between 2000dpi (the lower limit you mention for a flatbed) and the 2600 you feel you get from the DSLR is not really a large factor IMHO ... naturally the number looks better, but again if you pop it onto a Nikon LS-4000 you'll get a decent 4000 dpi AND you'll do colour negs better tooWell . . . that's true. But the scans from a flatbed are inferior, for one thing, and for another, I can usually scan about three or four slides per minute using my rig. It takes longer with negs because repositioning them accurately takes longer. So, even though I can't walk away from my rig, I can make the dupes a lot faster, and they're better to boot.
So now that I've determined to my satisfaction that duping 35mm slides and negatives in some cases (b&w are easy, color can be a problem)
I'm faced with this dilemma: do I go to all the trouble of archiving all my slides and negs with my cheezy 10.2 mp camera, or do I wait until I get one with better resolution? ... . Hence my concern more than ever that I should get a DSLR with more resolution. Especially since, for what the high-end Nikon scanners go for these days, I can buy a much better camera than what I have now.
Like you I don't depend on more than 2400dpi accuracy on my scans.
the speed advantage may tip the balance of the effort / benefit analysis, but the difference between 2000dpi (the lower limit you mention for a flatbed) and the 2600 you feel you get from the DSLR is not really a large factor IMHO ... naturally the number looks better, but again if you pop it onto a Nikon LS-4000 you'll get a decent 4000 dpi AND you'll do colour negs better too
its a vexing question, there are advantages to a better full frame SLR for double up use as a camera (that's a joke) and the Nikon scanner is of course not cheap. A 5D MkII however is more expensive than the LS4000 ... and of course if you're not scanning anymore (meaning your film use is legacy) then there is no need to keep it and you can on sell it
However I think its significant to mention that other people use other films than 35mm, like me. So the scans of larger formats on the flatbed start to make significantly better sence than a DSLR when you move from 35mm to 645 to 6x7 and eventually 4x5. There the 2000dpi starts to walk away from the fixed pixels you can capture in a snap using a 35mm duping arrangement.
Things are quiet here so its good to have discussion (if you ask me). So please don't interpret this as any sort of attack on your way of doing things.
I would be that guy. I got a Coolscan 9000. I found the Scan Dual IV to be vexing but mainly because I had used a 9000 previously. Without that point of reference I would doubtless be much happier with it. In many ways it is an excellent machine.
I have since moved to a digital camera and a copy stand, and I am happy with the results. A purpose-made lens makes a big difference, though. I use a borrowed EF 100mm macro, and it is great. I think 10 Mpix makes a great file size, so I would just invest in a nice macro lens and keep doing what you are doing. And, I just prefer the way copied images look to scanned images, in general. The amount of volume you can quickly handle quickly is a great benefit, and you can control your copies in Camera Raw, which I find very convenient. I plan on sticking with this for 35mm, and moving to a flatbed for larger film some day.
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