Help me understand push/pull on M3?

[Ko.Fe.]

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It is very simple then explained by some one who does it. Like me :).

Step one. Adjust ISO on the light meter. To ISO 800, for example.

Step two. Take exposures according to the light meter.

Step three. Develop according to ISO in this chart example:

https://www.digitaltruth.com/devchart.php?Film=%Ilford+HP5%&Developer=%HC-110%&mdc=Search&TempUnits=C&TimeUnits=D

Just find ISO800 and develop how it is written where.

 

Use good quality films for push, like HP5 and Kodak 400 TMAX.

Use crappy or old films to pull. Like Foma 400.

Use good and easy to use developer. I use nothing but HC-110 as normal and push and Rodinal for low ISO.

I push ISO400 films from October to March. And I pull old Kodak 50D cinefilm during summer.

 

Edited June 1, 2019 by Ko.Fe.

[Ko.Fe.]

This is how I use S16 with pushed films.

ISO is your shutter speed. ISO100 is 1/125. ISO 400 is 1/500, ISO 800 is 1/1000.

If you are pushing @1600, add x2 yellow filter for S16 day time, it will bring it to @800 (1/1000).

So, film pushed @1600 with x2 filter is @800. Filter removed - @1600. x4 filter added, it is 400.

It is written at most of the filters x2, x4. It is factor how less light comes through this filter.

I'm using x2 yellow and x4 green filters.

Again, develop it as ISO1600.