Ilford 3200

<p> I am going to be using Ilford 3200. I will be using it with a Yash T4 that automatically calculates the exposure based on the DX coding of the film. The real asa value for the film I understand is nearer 1200. My question is will the camera calculate the exposure based on the 1200 value or the 3200 value? If its based on the 3200 value I will need to push the film, to get the exposure the camera has calculated for ?</p>

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<p>The real asa value for the film I understand is nearer 1200.</p>

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<p>Ilford say it is ISO 1000. It will depend on what they have set the DX coding to. Can you set it manually?</p>

<p><strong>Ilford say it is ISO 1000. It will depend on what they have set the DX coding to. Can you set it manually?</strong><br>

No, it's a fully automatic camera. Is there anyway in telling what the DX code is set to ?</p>

<p>Can you adjust any exposure compensation to change the ISO through that?</p>

<p>There is a very good data sheet for Delta 3200 on Ilford's website. Ufortunately, it doesn't say what the DX code is or even if it has one.</p>

<p><a href="http://www.ilfordphoto.com/Webfiles/201071394723115.pdf">http://www.ilfordphoto.com/Webfiles/201071394723115.pdf</a></p>

<p>EDIT: I just had a look on Ilford's forum where the same question was raised. This is one of the replies:</p>

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<p>Delta 3200 is DX coded to 3200. However, many cameras will not read this high. One thing to do if the camera does not have an indicator is to look in the camera where the film cassette sits. You will notice a series of small wire loops, in pairs. These are how the camera reads the code.<br />If there are 12 pairs, then the camera is fully DX compatible, and is probably setting the speed to 3200. If there are only 10 or 11 pairs, then the camera will probably rate the film at a lower speed, although different cameras have different defaults.<br />ILFORD Technical Service</p>

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<p>The reply is from Ilford so should be correct!</p>

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<p>if you camera recognices iso3200, shoot at this speed and develop it as per the instructions.</p>

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<p>Paul, if you shoot at 3200iso, you'll have underexposed images. Delta 3200 is really around iso 1250. You expose at 1250, and process as per the 3200 box speed.</p>

<p>The Yashica T4 recognizes DX coding for ISO 50 to ISO 3200 films. Took me all of 3 minutes to find the manual and the specs <a href="http://www.cameramanuals.org/yashica_pdf/yashica_t4-2.pdf">here</a>. So the camera will read the DX coding and expose the film at an exposure index of 3200. Process accordingly.</p>

<p>At least at times, you could buy thin strips that would stick over the DX code on the cannister, to fool the camera into using some other EI. No idea whether, much less where, you can still buy them.</p>

<p>Whether Delta 3200 (or any other film) is really 800 or 1000 or 1250 per the ISO-standard measurements of FB+F depends in part on the developer. In, say, Rodinal, it might well be closer to 640 or 800; in, say, DD-X, it's probably about 1250. But with DD-X at EI 1250, it will look flat (low contrast). IMOPO, it's best around EI 2000, but I have used it at EI 1600 to EI 6400 with acceptable results.</p>

<p>In your case, if I really needed the sentitivity, I'd probably look for a camera with a faster lens, like an old compact rangefiner (which would also let you set the sentitivity, <em>if the meter is still reasonably accurage and if it goes that high</em>). If I had to use the T4, I'd just pop in the Delta 3200 and process for 3200 (which most people find actually requires a bit more developing than Ilford indicates--there are several threads on this).</p>

 

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<p>Whether Delta 3200 (or any other film) is really 800 or 1000 or 1250 per the ISO-standard measurements of FB+F depends in part on the developer.</p>

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<p>It depends totally on the ISO approved test method. In this case Ilford claim that it is ISO 1000. Anything else it is used at is an EI number, not an ISO number.</p>

 

<p>" Paul, if you shoot at 3200iso, you'll have underexposed images. Delta 3200 is really around iso 1250. You expose at 1250, and process as per the 3200 box speed. " </p>

<p>I am entrigued by this comment . I recently exposed a roll at 1250 but took the dev times for 1250 and used those. If i develop at 3200 with that same film shot at 1250 do i not end up with overdeveloped negatives ? Sorry if its a noob question but im ,, well a noob at home developing and playing with film at non rated speeds. </p>