Anthony, I agree 100%; _if_ you are willing to accept the unknowns about image permanence with this film (will it last refrigerated?). As nearly as I can tell, it is a true 400 speed.This image was taken at f1.5 handheld, 1/30. Based on memory, it captured what was there. www.kencarney.com/sanctuary_chimayo_window.htm --Ken ----- Original Message ----- From: "Anthony Atkielski" <anthony@...> To: <DigitalBlackandWhiteThePrint@yahoogroups.com> Sent: Sunday, May 18, 2003 4:08 PM Subject: [Digital BW] Portra 400BW example > I was very lukewarm about chromogenic B&W for quite a while, but I've > discovered that Kodak Portra 400BW, at least, isn't bad at all (I haven't > tested others enough to say). > > I went out one chilly evening and took some shots by the river with a tripod > and a 6x6 MF camera, on Portra 400BW. I recall using exposures of several > seconds so that I could get some decent DOF. > > Here's one example that surprised me: > > http://www.mxsmanic.com/stairs.jpg > > The shot surprised me for several reasons: > > 1. Portra 400BW is extremely sharp. > > 2. The film also has amazingly fine grain, particularly for an ISO 400 film. > > 3. It scans extremely well. > > 4. This shot had a lot of stark contrast. I was surprised and pleased to > see that Portra 400BW had a great deal of headroom for manipulation, in both > shadows and highlights. I was able to pull rich detail from both > (seemingly) blocked shadows and blown highlights, making them look very nice > indeed, with no perceptible increase in noise or grain. This allowed me to > reduce the contrasts and come up with a very balanced image that shows > detail in just about every corner. Note the subtle shadows on the water > surface, the details in the shadows on the wall on the right, and the detail > in the highlight just opposite the lamp--much of that was extracted with > Photoshop. It was wonderful to be able to goof around with shadows and > highlights and just see boatloads of extra detail waiting to be extracted. > > 5. This film handles a much wider range of light intensities than I > expected--i.e., it's a lot closer to B&W range than I at first thought it > might be. I didn't expect chromogenic B&W to hold contrast so well. > > 6. Portra 400BW seems to work extremely well for night shots, just the > opposite of what I had expected. > > This scan is extremely sharp. For a full-size excerpt from the original > scan, see > > http://www.mxsmanic.com/stairs1.jpg > > This was at 4000 dpi, and the grain is still hard to see in most of the > image. Fine details in the stone stand out. I'm not sure where I had the > focus set for this shot, as I set focus to maximum DOF rather than to target > any specific detail. Most of the area near the lamp is very sharp, though. > > Now, what I'd really like is to be able to get an image that looks like this > on paper, with a dedicated B&W ink-jet printer. How close could I come? > Since this is MF an A3 enlargement would be easy to prepare. > > I have two other unusually successful examples of this film, one in MF and > one in 35mm, but I accidentally overwrote the scans and I have to rescan one > of them first. > > Portra 400BW, in summary, seems to be a kind of poor man's Tech Pan for me, > as it has almost the same fine grain, and almost the same resolution, but it > is much faster and does not require special B&W development. It does have a > kind of flat rendering like one sees in all truly panchromatic B&W films, > but in these night shots, that doesn't seem to be an issue (sometimes it > flattens day shots, though). > > > > > Please visit the Group Homepage to check the Files, Bookmarks, Polls and other resources as they are often being updated. The page is at: > > http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint > > If you wish to receive no emails or just a daily digest, or you wish to unsubscribe, please edit your Membership preferences by visiting this same page. > > Please follow these basic guidelines: > - Include your full name with your message. > - Include the address of your website, if you have one. > - As threads develop, trim off excess portions of earlier messages to keep them short. > - As the topic of a thread changes remember to change the subject header. > - Good manners are required at all time. No personal attacks or &amp;quot;flames.&amp;quot; > - Complete your Yahoo profile. > - Before posting a question, search the message archives and the various resources on the homepage. > > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > >
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Re: [Digital BW] Portra 400BW example
2003-05-19 by Ken Carney
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