Hi,
I recently bought a black & white Ilford ISO 400 roll (HP5 PLUS 400) and want to try pushing it.
My film camera is a P30t (great "bang for the buck" as northamericans say). BUT it does not allow to manually input the film speed so i made a litle hack to the film cannister to trick the camera into reading the DX code as an ISO 1600 roll.
If anyone is interested, here I got the DX encoding info:
DX encoding - Wikipedia, the free encyclopedia
This is the original DX code on the cannister. Next is the "hacked" DX code: Some aluminium foil and electrical tape did the trick.
Notice the hack did not affect the rest of the DX code, which stands for the total of exposures and tolerance of the film, half a stop in this case.
Now, the camera will meter as if the roll was ISO 1600 and when I send it to the lab, Iīll tell them to develop it with +2 stops.
If there arenīt any objections, let the "pushing" begin?
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Uptade 20/10:
I finally finished the previous roll on my film camera. When I mounted the Hacked roll,the metering was not consistent. Sometimes it metered as if it was ISO1600 and others as if ISO400.
So I thought how to make it better until I noticed that under the dark parts of the code, there is metal also. So I used my dremel modify the code.
This is how the camera reads the DX code:
Now the meter works well as if the roll was ISO1600
Last edited by carrrlangas; 06-14-2013 at 12:09 PM.