Sheet Film and the Dreaded Grafmatic
When I had just started photography I was down in Rock, Cornwall and bought a copy of 'End of the Land' by Andrew Nadolski. Many things impressed me about this book (I'll try to review it soon) but one of the things that continued to impress me with this and a few other books since is the rendering of the film used. I had no idea at the time but since then I've discovered that it is probably Kodak Portra 160NC or 160VC. More recently, just as I was starting large format photography, I saw the Harry Cory Wright book, which despite my confusion as to what it was trying to be, I was again captivated buy the quality of colour. As I have used Provia and Velvia since and understood it's behaviours, I've realised that in certain circumstances the muted, warm colours of Portra can allow the subject matter to shine through (especially when there is already significant colour in the picture or a wish to create more muted colours).
If you've been following my journey into film, you'll have also noticed me using Fuji Astia, which has a similar colour response to negative film but which has the benefit of being easy to interpret wheras with colour negative film you need to remove the orange cast, which is pretty much impossible to do in a way that is repeatable. This means that with negative film, you never quite know whether your conversion is accurate or not. I've also played with Fuji 160S for quite a while and have never been really happy with it; the results have always tended to a strange green or magenta tinge which I have never managed to remove.
I finally decided it would be a good idea to try out some Portra after all I had heard and, as you can't buy it in quickload format, I had to decide how to use it which really means either double dark slides or the 'mythical' graflex grafmatic film holders; A beast that is rumoured to eat film stock raw and spit out the results in a hail of celluloid confetti. Fortunatley I had a friend who was a well know grafmatic tamer who had managed to build up a coterie of over ten of the beasties and had yet to be bitten by one. So when I saw a couple of mint condition ones come up on ebay for £50 each, I crossed my fingers and pressed the 'buy it now' button.
For those of you who don't know what a grafmatic really is, I'll try to give a quick review. Each grafmatic has six 'septums' within, each of which is a flat peice of light metal the same size as a sheet of 4x5 film with a lip folde at the top and sides to keep a sheet of film in. Once a film is slipped into this sheet, simple tension (and I think a slight curve of the crease at the bottom) holds the sheets in. The container for these septums is a sprung container that when operated (lifted up fully and reinserted) moves a septum to the front of the cue, and then the darkslide reveals the film. The next operation moves this sheet to the back of the container, increments a mechanical counter and the whole unit is then ready for the next shot. For a better guide to what is going on, have a look here and
So, combined with the purchase of 50 sheets of Kodak Portra 160VC and a Harrison film changing tent, I was ready to go. I took a few shots in Scotland (as I've shown in my previous post here ). The results were initially dissapointing when I use Silverfast to scan the film. Silverfast's NegaFix has a couple of problems as far as I'm concerned. The main problem is that it just doesn't do a great job (in my opinion). The second is that, if you don't get a a good result, you have to rescan the film. What a pain! The revelation was when I found ColorNeg, a Photoshop plugin by CF-Systems. The key to ColorNeg is that you make a 'linear scan', which is basically as close to a scan raw file as you can manage (instructions for the v750 using Epson software are here) then you take the 16bit scan you have produced (which look a loveley orange colour) and firstly process it using Scantique (comes with ColorNeg) which removes the gamma curve from the film to finally produce a 'flat/raw scan'.
The ColorNeg plugin itself is fairly complicated and not the most user friendly but the default settings produce results that are miles better than Silverfast. I've also processed 160S which, despite the scans being a lot better than those using Silverfast, the results are nowhere near as nice as Portra (at the moment I hasten to add - I'll still carry on with it as I would like to make an A/B comparison). The colours with Portra appear more 'stable' and respond well to adjustment in photoshop.
This post is about the film holders though. Grafmatics, if in reasonable condition, don't eat filml They've been simple to use and the only problem so far has been keeping a track of which exposures are which (not too much of an issue as the film stays in the same order and as long as you try loading and unloading in the light - with 'used' film obviously - keep a few of those quickloads where you forget to close the lens first. I you're like me you should get 6 of these fairly quickly :-) )
Next time I take a shot with my grafmatics, I'll make a little video to show it off. Hopefully that will be this weekend as I'm up in the Peak District with Dav Thomas to research a location for a weekend large format introduction course we're planning (well everyone else is so why not - so if you are interested in learning a little from a certified large format geek, just let me know).
Highlight this Comment Julian11/12/2009, 08:27
Hi Tim,
I totally concur with your findings about scanning Portra - it's a lot easier to scan than NPS!
However, where we differ is that I take a much more interpretive approach to the original neg than you - or so it appears. For example, if the magenta cast is unappealing in a particular scan (not always the case) then your own Velvia profile works wonders (since Velvia also scans slightly magenta). Otherwise I use one of Joe Holmes's ChromeSpace profiles - whatever it takes to produce an overall colour balance which gets me close to where I want to take the image.
The downside is, of course, that my method isn't terribly scientific or easily repeatable. Then again, that's half the fun for me. :-)
Highlight this Comment Tim Parkin11/12/2009, 08:35
Hi Julian - thanks for the feedback and it's nice to know I'm not going crazy with 160S. I shall persevere and try using my own profile (what a thought!). Joe Cornish was showing me the Joseph Holmes colour spaces - a very clever use of icc profiles! I hope I wasn't implying I don't twiddle my pictures once scanned. Twiddling is half the fun! Tim.
Highlight this Comment Julian11/12/2009, 10:17
I think we all like a bit of twiddling now and again. :)
I've been a long time user of ChromeSpace and its variant profiles and judicious use can lift an otherwise dull scan. Injudicious use, however, can cause temporary burn-out of the colour-receptors in your eyes... ;^)
Have you checked out Joseph Holmes's portfolio? Some amazing work. Methinks he's not giving away all his secrets.
Highlight this Comment adamp11/12/2009, 13:46
Interesting topic Tim. I am coming to the conclusion that as I cannot project my MF 645 slides, I might as well use colour neg film and thus be able to have positive colour (after scanning) and still keep the negative for conversion to b&w. Also the exposure tolerance and wider dynamic range are attractive.
I have used Portra 160VC in the past, on bluebells, but found it insipid. Perhaps this is a result of my amateurish scanning on the 750V! On the other hand I also used it in Bodie on the Death Valley trip last year and quite like the results – a little garish in bright sun but nice in other instances – have a look here: http://www.ephotozine.com/u41179/gallery/1255332 I have just bought some 100 ASA Ektar after reading positive reviews of it but have yet to try in MF. I used the 25 ASA version in 35mm some years ago and found it very good indeed.
Highlight this Comment Tim Parkin14/12/2009, 00:35
@Julian - I've only just started looking at the Joseph Holmes stuff, although I've enjoyed his pictures for some time.
@Adamp - Is there a problem projecting MF slides? I was thinking about getting some of my large format work (after post processing) converted to medium format and getting a projector (it's got to be better than the atrocious digital projectors that are in use). You could still use negative film as well. Maybe I could get them transferred to 35mm film but I wonder what resolution they can get.
Your picture looks great. From what I've seen, it can produce some nice colour (although a little post processing is needed - and converting negatives isn't straightforward). I have some ektar that I haven't tried yet - the photographs I've seen of Dav's that were taken on Ektar look wonderful. I hope we get a 4x5 version!!
Highlight this Comment Julian14/12/2009, 09:49
Regarding digital projectors and the lamentable quality thereof, I do recall reading a while back (it may have been on Luminous Landscape but I'm not sure) that there are projectors available with an increased colour gamut which are specifically designed for projecting photographs. However, they are unlikely to be cheap.
I'm sure as complaints from photographers mount, more companies will bring out more suitable projectors. It's probably better than accepting the quality losses inherent in inserting yet another process in the stream, if you have the patience...
Oh and one other thing. How do you find working with the Grafmatic? It strikes me that keeping track of which sheet is where must be a bit of a nightmare. Certainly managing a stack of DDS's seems a lot easier on the face of it.
Highlight this Comment Tim parkin14/12/2009, 09:56
Hi Julian, so far it's not been too bad. I keep a pretty comprehensive note system anyway so we'll see how things go. I haven't used transparency yet and only take one shot with negative so we'll see how I fare when I'm working A and B sheets (I might load two graflex and use one for A sheets and the other for B's)
Highlight this Comment Jenny MacLennan14/12/2009, 10:20
I am intruiged by the Grafmatic, but wondered how the weight and size compared with 3 DDS? The one I briefly looked at seemed quite chunky.
Highlight this Comment Tim Parkin14/12/2009, 10:56
aha! Good question and thanks to Dav Thomas for measuring a dds for me. DDS's are 170g and 13mm thick (at their thickest, main area is 11mm thick) and using Charlottes best kitchen scales, grafmatics are 483g and 240mm thick.
Which means the comparison is 510g vs 483g for weight (grafmatics just win slightly) and 360mm vs 240mm for thickness. So you get 50% more film in the same space. Grafmatics are a little longer however (about 20mm of darkslide handle).
Supposedly grafmatics hold film a lot flatter due to their septum design. I'd say they are useful but not a significant contribution to road safety... I have two and will probably buy another if it comes up under £50. However, I'll probably buy a few fidelity DDS's as well because cost for performance wise they are way better.
Highlight this Comment adamp14/12/2009, 13:23
Chaps (and Jenny!!), perhaps it’s not so much can’t project MF slides as won’t, because of the cost of the projector. Rollei used to make one at around £1000, I’m not sure if it’s still available or indeed if anybody makes one these days. Perhaps I should look around and see what’s on the market, new and/or used. Rgds.,
Highlight this Comment Jenny14/12/2009, 19:07
I don't mind being included as a 'chap'. I'm usually totally outnumbered....it's 5:1 at home!
Highlight this Comment Dismayed29/11/2010, 22:06
I'm looking forward to seeing a clip on the Grafmatic back.
Highlight this Comment Tim Parkin22/12/2010, 13:01
I'll see what I can do for the video!
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