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  1. Re: Should I Drum Scan, X1 Flextight Scan, or use the Epson V850 w/Aztek Wet Mount Ki

    While some CMOS based imaging systems are coming down in price, an Epson isn't a bad option if you aren't making big prints and have fairly relaxed aim points (qualitatively speaking).

    The...
  2. Re: Should I Drum Scan, X1 Flextight Scan, or use the Epson V850 w/Aztek Wet Mount Ki

    DPI = the dots per inch an output device delivers in whatever screening pattern - stochastic or otherwise. PPI input resolution equates to a particular DPI dot output, but that can vary depending on...
  3. Re: Should I Drum Scan, X1 Flextight Scan, or use the Epson V850 w/Aztek Wet Mount Ki

    That change looks like it coincided with the release of the Apo-Rodagon HR. The older catalogues are definite on 5 micron.
    ...
  4. Re: Should I Drum Scan, X1 Flextight Scan, or use the Epson V850 w/Aztek Wet Mount Ki

    I'd agree about the challenge levels - I think the problems are very much those of mechanical precision inter-relating to the optical performance (which has to be good in the first place). I've made...
  5. Re: Should I Drum Scan, X1 Flextight Scan, or use the Epson V850 w/Aztek Wet Mount Ki

    The Magnagon seems to be designed to use a special filter on the front - and it's definitely very unlike the Apo-Rodagon D 1x in the shape of the front and rear elements. There is some evidence that...
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    Re: Help me choose a camera to hike 2000+ miles

    I know folk of the same build who use Arri IIC's and 235's handheld, but they don't try trekking across the country with them in a backpack! The MT is fine to use handheld, but what I was getting at...
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    Re: Help me choose a camera to hike 2000+ miles

    Or a Fuji 6x9 - but yes, I'd agree that if handholdability & weight matter, a good medium format RF will often provide a better compromise of quality and ease of use than dragging an LF camera along....
  8. Re: Should I Drum Scan, X1 Flextight Scan, or use the Epson V850 w/Aztek Wet Mount Ki

    Sandy & sperdynamite: I'd be interested in seeing your results off HP5+ or something of that sort in the 2000ppi resolution range (and higher if you want) - mainly because I've found its granularity...
  9. Re: Should I Drum Scan, X1 Flextight Scan, or use the Epson V850 w/Aztek Wet Mount Ki

    Same here - I think if the field of the optic being used for the digitisation is flat enough & there's sufficient overlap, then PS handles it just fine
  10. Re: Should I Drum Scan, X1 Flextight Scan, or use the Epson V850 w/Aztek Wet Mount Ki

    I wonder if he even owns the mystical Epson he is so obsessed with.
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    Re: WET PLATE SILVER BOX IDEAL ID dim

    Unless you're potentially dealing with lots of chloride salts, 304 is probably fine.
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    Re: WET PLATE SILVER BOX IDEAL ID dim

    If that's the case, it suggests they're using the wrong grade of stainless - anything photo process related should be a minimum of 304, ideally 316 - and any welds should be to the same standards.
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    Re: DSLR Scanning - Signal / Noise

    Grat - anyone who has actually made decently sized prints from an Epson scan and looked at them alongside the same image off any decently high end scanner will be able to see that there are...
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    Re: DSLR Scanning - Signal / Noise

    Grat: a Noritsu is, no matter how much you want to believe it to be, not a drum scanner. It's clear that you haven't done basic due diligence here. The USAF target (indeed, nearly any sort of bar...
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    Re: DSLR Scanning - Signal / Noise

    Your Epson scans are in line with essentially every Epson scan I have seen or made in terms of their fundamentally poor imaging of the film granularity. In and of themselves there is nothing wrong...
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    Re: DSLR Scanning - Signal / Noise

    Grat - the Epson's MTF response falls below 50% at just under 700ppi under the best possible test conditions. The last 70 years of imaging science have shown that the relevance of USAF-1951 imaging...
  17. Re: Affordable 8x10: Any Other Game than Intrepid?

    They're not totally uncommon over here - but they tend to attract a clientele who use their cameras rather than talk about them...
  18. Re: Affordable 8x10: Any Other Game than Intrepid?

    The best engineered 8x10 I've seen is the one built by Mike Walker (stainless steel and machined engineering plastics) - the problem with so many 8x10's is the obsessive focus on weight over...
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    Re: DSLR Scanning - Signal / Noise

    Pere, you don't need other people's negatives or anything of the sort. What you need to be is honest. Do you or do you not own an Epson V7xx or v8xx series scanner? A 'Yes' or 'No' is all that's...
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    Re: DSLR Scanning - Signal / Noise

    Pere, you've been shown multiple times across multiple forums by multiple people that your claims are wrong and that the Epson cannot adequately image granularity in any way close to what various...
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    Re: Resolution Comparison Between Films?

    That's the least of it - the high contrast resolution of a film matters if you are trying to image a 0.6m object on Earth from space, while the MTF performance and RMS Grain don't have significant...
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    Re: Resolution Comparison Between Films?

    Drew - if those enlargers were on Durst chassis, whoever was telling you about those enlargers was pretty likely being a bit economical with the actualité of their use. HK, Fotar, De Vere Apollo/...
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    Re: Resolution Comparison Between Films?

    Pere, those resolutions you are throwing around are lines/mm, not line pairs/mm or cyc/mm - halve them if you want to compare with more regular films. Then look at how badly those Aerochromes (and...
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    Re: Resolution Comparison Between Films?

    Drew - I know how dimensional wonky triacetate is - put a sheet of 4x5 on even a seemingly cool light table & watch it curl! Fastest way to tell whether the base is estar or not. What I was pointing...
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    Re: Resolution Comparison Between Films?

    Drew - aerial photography has certain advantages that films at sea level don't have, especially in terms of shadows and exposure scale - on the other hand, they need to cut through haze and image...
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    Re: DSLR Scanning - Signal / Noise

    Why is it so difficult for you to re-scan your negative?

    Either you can adequately image the granularity on it, or you can't.

    What is it that you are so desperate to hide?
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    Re: DSLR Scanning - Signal / Noise

    Pere, you must show everyone that you can adequately image the granularity of HP5+ from your negative on your scanner at the resolutions you claim. No more excuses or timewasting.

    If you can't,...
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    Re: Resolution Comparison Between Films?

    Drew - T-grain's biggest advantages are that it allows drastically better sensitivity for a given amount of silver and with better 'coverage' (Bob Shanebrook, 2nd Edn, pg.18) - and with finer more...
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    Re: DSLR Scanning - Signal / Noise

    The only question Pere, is whether you are going to rescan that negative tomorrow using the system you espouse and show that the granularity in the sky/ clouds can be adequately imaged compared to...
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    Re: DSLR Scanning - Signal / Noise

    Pere, you've shown once again that you cannot see what is staring you in the eyes from your own examples. You have repeatedly failed to produce any evidence whatsoever to disprove all the high...
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    Re: Resolution Comparison Between Films?

    Yes - it was the supercoating of some films that had to be tweaked for scan compatibility - Fuji as well as Kodak. The rest of his claims about MTF (and muddling it up with ISO resolution testing)...
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    Re: DSLR Scanning - Signal / Noise

    Pere - your image is actually a better actual test of a scanner's MTF than Pali's (which is a better test of colour rendering than the optical performance of scanners). It has large areas of...
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    Re: DSLR Scanning - Signal / Noise

    I know, I know - especially when it's very obvious that a lot of bricks are being thrown from inside a glass house.
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    Re: DSLR Scanning - Signal / Noise

    Anyone who spends their time quoting 1951 resolution charts while dismissing MTF and information capacity has clearly had no useful engagement with the peer reviewed literature of imaging science...
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    Re: DSLR Scanning - Signal / Noise

    A low MTF optical system (Epson) with a lot of pixels and higher noise will always perform worse than a higher MTF optical system (Nikon and lens) with lower pixel counts. Theoretical 'resolution'...
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    Re: Tray print washer question

    If you want to make internal separators in a vertical washer that hold on to the print through surface tension, prismatic diffusion material out of light fittings is essentially what a number of well...
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    Re: Tray print washer question

    The time, agitation, total changes of water method that Jim outlines above is, if used with hypo clear and checked with residual hypo testing (as you should with any vertical washer) absolutely fine...
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    Re: Resolution Comparison Between Films?

    Very simply, Hollywood went for neg/ pos processes because it was better qualitatively than pos/ pos processes - there's plenty of hand-waving that goes on about transparency, but most of it comes...
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    Re: Experience with Colenta Processors

    While the Colenta may be better than many other roller transport systems in terms of its rollers etc, the problems I reported above almost entirely related to loading the film into the machine - in...
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    Re: Resolution Comparison Between Films?

    C-41 films outperform E-6 on the metrics that matter - sharpness, latitude, granularity etc - and if your display medium is anything other than the original transparency, these factors matter very...
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