New! Video Chat Connect with a Photography Expert – Live

Paterson Changing Bag (27.5 x 27.5")

Paterson Changing Bag (27.5 x 27.5")
In Stock

True Know-How

Ask Our Experts


Paterson PTP125 Overview

The Paterson Changing Bag is an essential piece of equipment that any photographer should keep in a darkroom. It is one of the most simple items to use and can potentially save you from losing a roll of jammed film stuck inside a camera.

Having a changing bag on hand means that a jammed or partly exposed film can be safely removed from the camera and shooting can continue and it will allow a film to be loaded into a developing tank without having to first find a darkroom.
It has a fail-safe double skin with a double zip closure and the comfortable inner lining is specially designed to avoid perspiration in prolonged use.
The Paterson changing bag is small enough to fit into a camera bag, yet large enough to allow a camera back to be fully opened once inside or a film to be loaded into a tank.

Paterson PTP125 Specs

Dimensions27.5 x 27.5" (70 x 70cm)
Packaging Info
Package Weight1.2 lb
Box Dimensions (LxWxH)8.2 x 8.15 x 2.7"

Paterson PTP125 Reviews


By Sheldon
Rated 5 out of 5
Date: 2022-01-17

perfect size, quality is great.

It works

By Mehmet
Rated 4 out of 5
Date: 2021-11-15

It works, I have no complaints about it, gets the job done

perfect size for a few rolls

By Rob
Rated 5 out of 5
Date: 2021-10-26

I find this is just big enough to comfortably work with a two reel tank. You could probably manage 4 but I don't have one to test. Quality is great, nice thick fabric. A single zipper with a velcro closure on the second layer.

Good bag

By Jiri
Rated 5 out of 5
Date: 2021-10-03

It's big enough to work a 1 liter Paterson tank in it and 2 spools of film. It does get hot and sweaty, if you struggle for 15 minutes Like I did the other day when my corners were sticking and not loading on the spool. The forearm sleeves tend to run on the small side, so if you have large forearm circumference, it is tight. But works very very well. I would of course prefer a full blown darkroom, but I'll keep dreaming. One day.....

Changing Bag

By Bob
Rated 5 out of 5
Date: 2022-01-10

I have used it to change lens in a dusty environment.

A must have

By Chad
Rated 5 out of 5
Date: 2021-12-21

I can developer B&W film during the daytime with this bag. It's extremely convenient and and I use it to process a roll or two per week. A must have if you develop a lot.

A must have

By Chad
Rated 5 out of 5
Date: 2021-11-29

A changing bag makes film development that much nicer. I highly recommend this bag and the Paterson starter kit if you want to get into film developing.


By Patrick
Rated 5 out of 5
Date: 2021-11-15

Very well made and light tight. Plenty of room to load large film reels and tanks.

See any errors on this page? Let us know


Can I use this for a 3-reel tank? Is it big ...

Can I use this for a 3-reel tank? Is it big enough?
Asked by: Ahsan
Answered by: Rob
Date published: 2021-01-15

Is the inside of the bag dust free?

Is the inside of the bag dust free?
Asked by: Suzanne
It’s dust free when brand new and still in the packaging. Whether it remains dust free depends on whether the equipment placed inside is dust free and how it’s stored. I think a small amount of dust inside the bag is inevitable but shouldn’t cause any serious issues.
Answered by: Anonymous
Date published: 2020-02-02

What is the weight of this bag?

What is the weight of this bag?
Asked by: Alan
around 1 lb
Answered by: vilson
Date published: 2021-02-18


Where was this product made?
Asked by: Anonymous
is it big enough to load 120 film in a tank that holds one real of 120
Answered by: Nicolai A.
Date published: 2018-08-27


can this be used to load 4x5 film?
Asked by: Susan
Yes but as always when it comes to changing bags. The film might be prone to dust issues if you are loading film into film holders.
Answered by: Alexander N.
Date published: 2019-08-14


is this fabric or plastic?
Asked by: Anonymous
It is Nylon, it works very well, even with my a bit larger forearms.
Answered by: Paul B.
Date published: 2018-08-27
  • y_2022, m_1, d_25, h_20CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.20
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_6
  • loc_en_US, sid_253370, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo