ISO51200 achieved by removing the cause of noise

When shooting indoors, ISO6400 is typically all that is required, but as the X-T1 is designed for professional use it is better to expand the range so, for example, it's easy to shoot concerts or sporting action indoors with a telephoto lens. 

But higher sensitivity also means a drop in image quality, so we challenged ourselves to produce a maximum sensitivity of 51200 - a first for FUJIFILM - that delivers the same level of image quality as ISO25600. FUJIFILM's requirements for image quality are normally severe, but this goal was achieved thanks to the effectiveness of the circuit design, noise reduction and various algorithms.

Normally, signal processing reduces noise after the digitizing the signal from the sensor, but we wanted to reduce noise before digitizing. When noise appears on the image sensor it does so in horizontal lines that are especially noticeable in low contrast images.

This is made worse by wires which, when arranged close together, cause an electromagnetic problem. To overcome these issues, the sensor's components and circuit board were carefully designed through numerous simulation tests. It wasn't easy to achieve noise reduction given the size of the components and the limited space available.

Temperature is also important. When the sensor gets hotter, noise increases so we focused on heat dissipation design to ensure the sensor wouldn't get too hot.

Additionally, the amount of black in an image affects quality at high sensitivities. On the computer, we examined how color reproduction and gradation change according to the exposure time and temperature then optimized the system to keep blacks consistent.

We hope this outstanding performance at sensitivities up to ISO51200 will expand the shooting options for users when photographing moving subjects, subjects at a distance or when taking photos at fast shutter speeds without using flash or a tripod. We hope that users will challenge the camera's capabilities and capture images that could not be taken before.

Categories:  Technology, X-T1, Stories
Tags:   development story , ISO

Image Pickup Process Design : 
FUJIFILM Electronic Imaging Product Development Center
Joji Miyashita

Related Products
FUJIFILM X-T1


Recommended Stories
FUJIFILM X Acquire Tethered Shooting Software

In-depth coverage on the new free tethered shooting software.

by FUJIFILM tethered shooting
FUJIFILM Tether Plug-in PRO User Guide

The series of articles explains how to use the FUJIFILM Tether Plug-in PRO

by FUJIFILM tutorial, tethered shooting
FUJIFILM Tether Plug-in PRO - Features

The article explains the overview of FUJIFILM Tether Plug-in PRO

by FUJIFILM tethered shooting, tutorial
Sea of Trees

X-Photographer Tomasz Lazar from Poland visits Aokigahara Forest at the foot of Mt. Fuji

by Tomasz Lazar X-Photographer, Tomasz Lazar, documentary, Japan, short film, Poland
The Evolution of Tools for Mirrorless Cameras

Evolution of mirrorless camera as a system

by Elia Locardi Elia Locardi, USA, travel, urban, landscape
Inside the bag of the X-Photographer -Tomasz Lazar

Series "Inside the camera bag of X-Photographer"

by Tomasz Lazar Inside the camera bag, Tomasz Lazar, Poland, X-Photographer
Teleconverter in wildlife by Jacques Gillon

Jacques Gillon tries the teleconverter for wildlife photography

by Jacques Gillon Jacques Gillon, France, wildlife, X-Photographer
Testimonial: José Luis Guardia

José Luis Guardia is in action shooting wedding photography with the Red Badge Zoom lens

by José Luis Guardia José Luis Guardia, wedding, red badge zoom, movie
Adventuring with Mother Nature and X Series

Daniel Malikyar goes on a road trip with the X Series.

by Daniel Malikyar Daniel Malikyar, nature, landscape
Tutorial: Portrait by Plants with Damien Lovegrove

Tutorial #3 by Damien Lovegrove

by Damien Lovegrove tutorial, Damien Lovegrove
Home X Stories Reaching for the ISO 51200
© FUJIFILM Corporation