Push and pull film processing, explained simply
By Owen Fisher · Last updated 28 May 2026
Pushing film means developing it for longer to compensate for shooting at a higher ISO than the box speed, which lifts shadows in low light but adds contrast and grain. Pulling is the opposite: less development for film shot at a lower ISO, giving softer contrast. You decide push or pull at drop-off, and the lab charges per stop because it changes the development time.
What pushing film does
If you shoot a 400 film at 1600, you have underexposed it by two stops. Pushing means the lab develops it longer to bring those frames up to a usable brightness. It is how photographers shoot in dim light without a faster film.
The trade-off: pushing increases contrast and grain, and it deepens shadows. A two-stop push on black and white can look gorgeous and gritty. On colour it can shift the colours. It is a creative tool, not a free lunch.
What pulling film does
Pulling is rarer. You shoot the film slower than box speed, say a 400 at 200, then the lab develops it for less time. This lowers contrast and can tame very harsh light. It is occasionally used to rescue overexposed rolls or for a softer, flatter look.
Most photographers push far more often than they pull, but knowing pull exists helps you talk to your lab about the look you want.
Why it is decided at drop-off, not after
Push and pull change the development itself, so they have to be chosen before the film goes in the chemistry. You cannot push a roll that has already been developed normally. That is why labs ask 'any push or pull?' when you hand it over, and why it is charged per stop.
It also means you need to remember, at drop-off, that you shot a roll at a non-box speed. Forget to mention it and the roll gets developed normally, which can leave a pushed roll looking thin.
Telling your lab the right thing
The key habit: note the speed you actually shot each roll at, and tell the lab at drop-off if it differs from box speed. 'This Tri-X was shot at 1600, please push two stops' is exactly what they need.
Filmara keeps the shot speed and any push or pull on the roll itself, so the instruction travels with the film and you can look back at what you asked for when the scans come in.
Frequently asked questions
Does pushing film increase grain?
Yes. Pushing develops the film longer, which raises contrast and makes grain more pronounced, especially in the shadows. On black and white this can be a desirable, gritty look. On colour it adds grain and can shift colours, so push with intent.
Can I push a roll after it has been developed?
No. Push and pull change the development time, so the decision has to be made before the film goes into the chemistry. Once a roll is developed normally, that is fixed. Always tell the lab at drop-off if you shot at a non-box speed.
How much does pushing or pulling cost?
Most labs charge a small fee per stop pushed or pulled, because it changes the development process and often means a separate run. Ask your lab their per-stop price when you drop off a roll you want pushed or pulled.
Or just ask the lab that scanned it
Filmara lets you circle a frame and ask your film lab about it directly, with their answer kept on the roll. Every roll from every lab you use, in one place.