If I pushed from 400 to 1600

[sumball]

What about the negative development process if I do so? Do I have to factor in this? Longer processing time, .....etc?

Never try before but hope to get the answer.

Thanks.

[sriram]

Of course, you have to push process. The increase in time depends on film, developer and temperature. I've had excellent results pushing Delta 400 to 1600 and HP5+ to 1250. No luck with Kodak films.

[sriram]

Also look at http://www.digitaltruth.com for a massive B&W dev chart.

[reignman77]

Originally Posted by sumball What about the negative development process if I do so? Do I have to factor in this? Longer processing time, .....etc? Never try before but hope to get the answer. Thanks.

which media u talking about?? Slides, Colour Neg or BW Neg??

[sumball]

thinking of pushing tri-x 400 to 800 or 1600. and i will processing the negative at home. just to chk if i need to consider the timing of the processing. think i need to, have to chk out my developer's (Ilford) website then.

just thinking if i can push only 800 or 1600 in one roll of film? ie. i cant push it to 800 and 1600 within one roll right?

thanks.

[StreetShooter]

Yes, you need to push process, which means either longer developing time, or higher temperature (eg 27 deg instead of 20 deg) or higher concentration of chemicals or all three.

It's pretty simple, really. If you're using HC-110, use concentration of 1+100 (5ml HC-110 + 500 ml water) at 27 degrees (room temperature in Singapore) for 20 minutes, agitating only first 10 secs. Very nice tones.

Tri-X is VERY VERY forgiving, and at the risk of incurring the wrath of purists, I would say you can expose anywhere between 400 and 1600 and still get very good negatives with the above method.

[student]

Originally Posted by StreetShooter Tri-X is VERY VERY forgiving, and at the risk of incurring the wrath of purists, I would say you can expose anywhere between 400 and 1600 and still get very good negatives with the above method.

What wrath? You are absolutely correct! What a wonderful film! Or course there are trade-offs, contrast differences, grain etc. But good printable negatives! The thing one will have to decide is if he/she likes it!

[sumball]

Originally Posted by StreetShooter Yes, you need to push process, which means either longer developing time, or higher temperature (eg 27 deg instead of 20 deg) or higher concentration of chemicals or all three. It's pretty simple, really. If you're using HC-110, use concentration of 1+100 (5ml HC-110 + 500 ml water) at 27 degrees (room temperature in Singapore) for 20 minutes, agitating only first 10 secs. Very nice tones. Tri-X is VERY VERY forgiving, and at the risk of incurring the wrath of purists, I would say you can expose anywhere between 400 and 1600 and still get very good negatives with the above method.

Thanks SS.