Overdevelopment. Giving too long or too much agitation in the developer, or having too high a temperature, or developer too concentrated. This results in excessive density and exaggerated grain structure in the developed material.
Overdevelop
To give more than normal the amount of development.
Overexposure
A condition in which too much light reaches the film, producing a dense negative or a very bright/light print or slide.
Overdevelopment promotes clumping in even fine-grain films, which is why pushed films (extended time in the first developer to increase the effective ISO) will always generate additional grain. But it's a relative matter.
Over printed (or Overdevelopment)
Term indicating that the amount of recommended development has been exceeded.
to have normal contrast, the density differences between the highlight and shadow areas of the negative must be proportional to the reflective brightness range of the subject photographed A contrasty negative usually is the result of overdevelopment ...
it is only grainy if you follow Kodak's development times, which OVERdevelop the film. Using either HC-110 or Xtol, TX-400 is a relatively fine-grain film with much better lattitude than T-MAX.
Blocked up
A piece of an overexposed and/or overdeveloped negative so thick with silver halides that texture and detail in the subject are blurred.
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Negatives are very dense ( dark ).
Assuming correct exposure in the first place. Overdevelopment. Developer too hot, too long development time, developer too concentrated or over agitation.
A technique used to increase contrast and film speed by underexposure and overdevelopment. Also known as uprating.
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Blocked up - a portion of an overexposed and/or overdeveloped negative so dense with silver halides that texture and detail in the subject are unclear.
It will also grossly underexpose the film, so to compensate, you need to overdevelop the film. A lot. This will generally give you printable negatives, but they will be very grainy and very contrasty.
Overdevelopment: Excessive development, producing dense, high contrast negatives.
Overexposure: Excessive exposure. On color negatives and prints the result is an increase in overall density. On slides the effect gives lighter results.
Pushing, Forced Development, Upgrading (UK)
Compensating through overdevelopment for inten-tional or unavoidable Underexposure. Cost: a little money and a lot of Grain gain.
Q
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Folks, don't even bother with the inferior new 570 - it's a classic case of overdevelopment (sorry Olympus, you got it superbly right the last time). So, I'd run out and snatch up the remaining 560UZ's while they're still lying around.
 See also: Photograph, Negative, Film, Exposure, Image
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