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Author
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Topic: Ektachrome 64T vs 100D vs VNF 7240 my experience and comparison for hand processing
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Jake Mayes
Expert Film Handler
Posts: 119
From: Bath, UK
Registered: Sep 2012
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posted October 05, 2012 02:22 PM
I would take this info with a grain of salt, before I begin because I hand-process.
If that makes much of a difference. I use a normal spiral tank, as I cannot afford the cost of a lomo reel and tank ATM. Film sticking is avoided with use of a lomo tank.
64T is a low asa one, but has grain very similar to 100D, but less tight. Sharpness is less but color pallette is more muted. Suited the zombie walk we had yesterday for college. The upside of this film is its forgiving for processing error, as I have tested. But it is so unforgiving for exposure error, 1/3 of a stop is noticeable!
64T is a tungsten film of course, can be useful.
Overall satisfactory, apart from one major fault with this stock. The pressure plate is useless. The slightest jitter means the film is not pressed agenst the gate properly, causing image flutter. When we are going crazy on a zombie walk, this is very noticeable. I was having so much fun I paid little attention to my camera, but it looked good and hilarious especially the faces of passers by, considering there was over 200 of us! Flutter is noticeable in a couple of areas. Sharpness is lacking somewhat, yielding a soft image. Sticks together a bit, hand processing strong agitation is advised (this only applies if you carefully coil film into a normal daylight tank)
100D a major improvement. Responds well to pushing, very stable image but very unforgiving of exposure error, and development error. Saturated pallette, tight grain, even when pushed a stop (as my 18th footage has been). Rich, and vibrant. Emulsion is more fragile so careful handling when spooling I find is a must! Leaves the stabilizer pink (unused coupler? Antihalation layer?)
Does not stick together as much.
VNF 7240 (in e6 at 38C) refrigerated
Muted colours (when projected bigger than say 11 inches diagonal, coarse grain
And dimmer on projection, although stays true to colours, apart from some blues are rendered very slightly green. From my experience forgiving of development error, but when hand processed loves to stick together, badly! Extreme agitation reduces this. Fine for fun, I cannot comment on long term stability of the dyes.
64T Advantages:
tungsten balanced, useful in some circumstances
Colour pallette suits some applications but not others
Forgiving of development error
Neutral toned( can be a disadvantage for some)
64T disadvantages:
muted palette, suits some applications however
Lack of sharpness
Need to keep camera stable due to pressure plate
Does not render warm colours well.
Some cameras can not meter 64ASA
100D advantages:
Rich, saturated colours
Strong pressure plate
Pushes well (1 stop, cannot comment on two)
All cameras can expose it well (1/3 of a stop on some, still yields acceptable results)
100D disadvantages
Processing errors are fatal, especially temperature
Delicate emulsion, when wet!
Unforgiving of exposure error
VNF 7240 advantages
Can be had for cheap
Retro look that some like
Forgiving for processing error
VNF disadvantages
Old hard to find stock
Archival stability when e6 processed is unknown
Does not fully render blues correctly (in e6)
Looks dull and very grainy when enlarged bigger than 11 inch.
Do not buy if not stored refrigerated, does not keep.
7250 stock unstable, most likely useless. Stay with 7240.
This is from my limited personal experience. Anyone else who has more info do add it!
Jake
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