Canon EOS 550D firmware v1.1.0

Firmware Version 1.1.0 incorporates the following fixes: Corrects a phenomenon in which when using the camera with the EF-S 18-135mm f/3.5-5.6 IS USM or EF 70-300mm f/4-5.6 IS II USM lens, even if lens aberration correction is set to "Enable", correction will not be applied.

Firmware Version 1.1.0 is for cameras with firmware up to Version 1.0.9.

If the camera's firmware is already Version 1.1.0, it is not necessary to update the firmware.

When updating the firmware of the camera, please review the instructions thoroughly before you download the firmware.

Q&A: Preparations for a firmware update: After the downloaded compressed file (.zip file) is extracted, a firmware folder is created.

• Extracting the do​wnloaded file: Right-click the zip file, and then select Extract All to extract the file. The extracted folder contains the firmware (File name: e8kr7110. FIR, File size: 9,538,556 bytes) and instructions on the firmware update procedures (a PDF file in five languages: Japanese, English, French, Spanish, and Simplified Chinese). Before starting the firmware update operations, please confirm the contents of the download, and carefully read through the firmware update procedures​. (The following is the history of past firmware updates) Q: Are the improvements from previous firmware versions included in Firmware Version 1.1.0? A: Yes, the following improvements from the previous version are included: (Previous) Version 1.0.9

improvements

1. Fixes a phenomenon in which tone jumps become noticeable in some images, depending on the shooting scene, when shooting with the Auto Lighting Optimizer settings (Low/Standard/Strong). (Previous) Version 1.0.8 improvements:
2. Fixes a phenomenon in which the set aperture moves unexpectedly when shooting movies in manual exposure mode using some Canon lenses (such as macro lenses). Supplemental Information: This phenomenon involves the aperture of the lens moving unexpectedly when the focusing ring moves (during focusing). Please note that aperture values also change when operating the zoom ring of a zoom lens that has variable maximum aperture values; however, this is a normal operation because the camera controls aperture values properly depending on the focal length (zoom position).