Funny grain in Konica IR film

[waileong]

Have a look. It was clearly visible under my 6x loupe, so it's not a scanning artifact.

Anyone have any ideas why this happens?

[acroolite]

Originally Posted by waileong

Have a look. It was clearly visible under my 6x loupe, so it's not a scanning artifact.

Anyone have any ideas why this happens?

This is very nice..how you develope this?

[waileong]

Originally Posted by acroolite

This is very nice..how you develope this?

Just normal Xtol 1+1. Any idea how the grain pattern came about? Never met a film with such a pattern.

[Larry H-L]

Possibly reticulation from a temperature change between chemicals?

Could the developer have been warmer or cooler than the stop or wash?

[Photo_Smith]

looks like reticulation, differences in solution temp should be minimised.

[colyn]

Reticulation is caused by a large temp variation in one of the steps. A few degrees variation will not cause it..

B&W IR film is very unforgiving in developing. The grain pattern can be caused by too much agitation or not enough. Agitation should be gentle for the first 30 seconds and 2 inversions per minute.. Temps should be kept to around 68-72 degrees. Contrary to popular belief a higher wash temp will not cause reticulation unless the wash temp exceeds 95 degrees...and then it shouldn't cause too much problems..

When I want reticulation I usually develope in developer heated to 110-120 then stop with ice water..

[waileong]

Thanks. Haven't seen reticulation till now. This was an old roll of expired Konica IR film, didn't know what to expect. Nice effect though-- not as blotted or splotchy as I'd heard it would be.