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Canon EF-S55-250mm f/4-5.6 IS STM User Manual

Canon EF-S55-250mm f/4-5.6 IS STM
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EF-S55-250mm f/4-5.6 IS STM
Instructions
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Canon EF-S55-250mm f/4-5.6 IS STM Specifications

General IconGeneral
MountCanon EF-S
Focal Length55-250mm
Maximum Aperturef/4-5.6
Minimum Aperturef/22-32
Lens Construction15 elements in 12 groups
Minimum Focus Distance0.85m
Filter Size58mm
Weight375g
Maximum Magnification0.29x
Number of Diaphragm Blades7
Image StabilizationYes (3.5 stops)
AutofocusYes

Summary

Key Features of the Lens

Improved Movie Shooting Functions

Enhances movie shooting with quiet, smooth servo AF using a stepping motor.

High-speed, Quiet Autofocusing

Achieves fast and silent autofocus during viewfinder shooting.

Excellent Imaging Performance

Utilizes UD lens elements for superior imaging performance.

Advanced Image Stabilizer

Provides 3.5 stops faster stabilization, adapting to shooting conditions.

Electronic Manual Focusing

Enables manual focus adjustments via the focusing ring's electronic detection.

Manual Focus After Autofocus

Allows manual focus adjustments after initial autofocus in ONE SHOT AF.

Circular Aperture for Bokeh

Features a circular aperture for attractive bokeh and soft-focus images.

Lens Handling and Precautions

Handling Cautions

Guidance on preventing condensation and avoiding high temperatures.

Usage Precautions

Recommendations for firmware updates for specific camera models.

Critical Safety Precautions

Warnings about direct sun viewing and fire hazards from concentrated sunlight.

Instructional Conventions

Explanation of symbols used for warnings and supplementary notes.

Regulatory Compliance and Interference

FCC Part 15 Compliance

Details compliance with FCC rules for digital apparatus, preventing harmful interference.

Canadian ICES-003 Compliance

States compliance with Canadian ICES-003 for digital apparatus.

Interference Correction Measures

Provides steps to correct radio or television reception interference.

Shooting Precautions and Behavior

Operation When Camera is OFF

Explains limitations like no manual focus and delayed zoom when the camera is off.

Lens Behavior in Sleep Mode

Describes sleep mode, motor inactivity, delayed focus, and exiting sleep mode.

Initial Reset Process

Details the focus lens reset on camera power-up and advises waiting before shooting.

Lens Nomenclature and Parts

Identification of Lens Components

Identifies key parts of the lens, such as rings, switches, and indexes.

Mounting, Detaching, and Focus Settings

Mounting and Detaching the Lens

Guidance on handling the lens after detachment and attaching the dust cap.

Setting Autofocus Mode

Instructions for setting the focus mode switch to AF for autofocus.

Setting Manual Focus Mode

Instructions for setting the focus mode switch to MF for manual focus.

Full-time Manual Focus Operation

Describes manual focusing after AF by pressing the shutter halfway.

Focusing Ring Speed Impact

Warns that fast rotation of the focusing ring may cause delayed focus.

Manual Focus Availability

States that manual focus is not possible when the camera is OFF.

Zooming and Lens Hood Usage

Operating the Zoom Ring

Explains that zooming is controlled by turning the lens' zoom ring.

Zooming and Focusing Sequence

Advises finishing zooming before focusing for accuracy.

Zoom Ring Rotation Speed Effects

Notes that rapid zoom ring rotation may cause temporary blurring.

Hood Function and Attachment

Describes the hood's purpose and how to attach it securely.

Improper Hood Attachment Warning

Warns that incorrect hood attachment can lead to vignetting.

Hood Attachment Grip Advice

Advises grasping the base of the hood to prevent deformation during attachment.

Image Stabilizer Operation and Benefits

Image Stabilizer Modes

Explains the stabilizer works in AF or MF mode and adapts to shooting conditions.

Stabilizer Limitations

Clarifies it cannot compensate for subject movement or extreme shaking.

Power Consumption of Stabilizer

Notes that the Image Stabilizer consumes more power, reducing shot count.

Stabilizer for Still Subjects

Describes compensation for camera shake in all directions for static subjects.

Stabilizer for Panning Shots

Explains compensation for vertical shake during horizontal panning and vice versa.

Stabilizer Usage with Tripod

Recommends turning off the stabilizer when using a tripod to save battery.

Stabilizer Effectiveness with Monopod

States effectiveness with monopod is similar to hand-held, but environment may affect it.

Stabilizer Compatibility with Extension Tubes

Confirms the stabilizer works with Extension Tubes EF12 II or EF25 II.

Custom Function for Stabilizer Control

Mentions changing camera custom functions to operate the stabilizer with assigned buttons.

Image Stabilizer Effectiveness Scenarios

Stabilizer Effectiveness in Low Light

Effective in semi-darkened areas like indoors or outdoors at night.

Stabilizer Effectiveness Without Flash

Effective in locations where flash photography is prohibited, like museums.

Stabilizer Effectiveness with Unstable Footing

Effective in situations where footing is uncertain.

Stabilizer Effectiveness with Slow Shutter

Effective when fast shutter settings cannot be used.

Stabilizer Effectiveness During Panning

Effective when panning subjects in motion.

Lens Accessories: Filters and Extension Tubes

Attaching Filters to the Lens

Filters can be attached to the filter mounting thread on the front of the lens.

Filter Quantity Limit

Only one filter can be attached at a time.

Polarizing Filter Recommendation

Recommends Canon Circular Polarizing Filter PL-C B (58 mm) for polarizing needs.

Polarizing Filter Adjustment Procedure

Advises removing the lens hood before adjusting a polarizing filter.

Using Extension Tubes for Magnification

Extension tubes EF12 II or EF25 II can be attached for magnified shots.

Extension Tube Magnification Data

Provides shooting distances and magnifications with extension tubes.

Focusing Mode for Extension Tubes

Recommends using MF mode for accurate focusing with extension tubes.

Close-up Lenses for Macro Photography

Enabling Close-up Photography

Attaching 250D or 500D close-up lenses enables close-up photography.

Close-up Lens Magnification Ranges

Lists magnification ranges for Close-up Lens 250D (0.23x-1.04x) and 500D (0.11x-0.66x).

Focusing Mode for Close-up Lenses

Recommends MF mode for accurate focusing with close-up lenses.

Lens Specifications and Details

Optical and Performance Specifications

Details focal length, aperture, construction, focusing distance, magnification, and field of view.

Physical Dimensions and Weight

Lists filter diameter, maximum dimensions, length, and the lens's weight.

Accessories and Compatibility Information

Covers hood, lens cap, case, and extender compatibility.

Measurement and Data Notes

Explains measurement methods, format equivalence, and notes on data standards.

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