High Speed Sync with 270EX II flash



Canon Speedlite 270EX II270EX II + G1X Mark II

Getting high speed sync with the 270EX II Speedlite isn't that tricky and the rewards are strong.

There are certain situations where your photo will really benefit from using high speed sync and this post gives you the simple 4-step method to setting your camera for high speed sync.

In full sun, flash fill-light will give you a good balance between your subject and the background.  In the photo below, the sun was very bright. It was high in the sky and slightly behind my subject.

what is high speed sync

Setting your camera to high speed sync gives you the ability to use flash at a faster than normal shutter speed. Your camera normally has a maximum shutter speed (usually about 1/250 second) where the shutter is fully open when the flash fires to get a good exposure. High speed sync causes the flash to rapidly fire multiple times through the super fast shutter opening to get even exposure throughout your photo.

High speed sync is great for super bright situations where your camera has to use a fast shutter speed to avoid over exposure. It's also great for controlling the balance (the ratio) between the natural light of the environment and the light coming from your flash.

Your Canon Speedlite 270EX II is not super powerful, so limiting the light from the environment with the shutter speed enables your flash to contribute  a higher percentage of light to the scene.

High Speed Sync With Canon Speedlite 270EX II and Canon 5D Mark III PhotographCanon 5D Mark III + 270EX II.
Exposure was at f-14, ISO 400.

This was taken during a moving parade following a beauty pageant and there was no time to play with exposure while my subject was being driven on the back of this corvette.  I needed a high shutter speed to freeze the action and get a good ratio between the fill light provided by my Speedlight and the light from the overhead sun. 

As a portrait photographer and sometimes a bit of a lighting snob, I usually find shaded areas and use bounced fill light as apposed to artificial fill light from a flash when shooting portraits.

It's a bit cumbersome to get deep enough into the 5D Mark III menu to find the high-speed sync setting which is used in Shutter Priority Mode.  Aperture priority mode has a limit of 1/200 second for the fastest sync speed which as it turns out I could have used in this photograph.

I set the camera well ahead of time and took a few test photos before my subject appeared, coming down the street and waving to the crowd.

How To Set High Speed Sync With The 270EX II

I included the four photos below in order to illustrate how you get to the high synchronization setting with the Canon Speedlite 270 EX II and 5D Mark III combo.  The 580EX and EX II have the high speed sync settings built-in to the flashes and are easily accessed on their menu screens.

Step 1. 270EX II -  External Speedlite Control

Canon 5D Mark III - External Speedlight Control

Step one is to find the External Speedlight Control which is under the camera icon tab in the main menu.

2. Flash Function Settings

Canon 5D Mark III - Flash Function Settings

Once you select External Speedlite Control, scroll down and select Flash Function Settings

Step 3. Flash Function Settings

Canon 5D Mark III - Speedlite High Speed Syncronization

Then scroll to and select the "H" symbol for high speed synchronization.


Canon 5D Mark III - Shutter Speed Synchronization Setting

The final step is to select first curtain, second curtain or high speed synchronization.

The Canon Speedlite 270EX II is a very simple and small flash without a custom function screen or a menu but I love it's size and portability. High speed sync with your 270EX II flash gives you so much more flexibility in creating good lighting.  How you use it depends on each situation very specifically.

Have a blast. Shoot a Canon!

Search for articles on this Site:

Author Bruce Lovelace
Bruce Lovelace Signature

Bruce Lovelace is the publisher of Canon Camera Geek. Read more about him on the About Page. He also publishes how to articles and camera gear reviews at the Photography Tips website.

View some of Bruce's photos on Instagram  and Flickr  Join the tribe of followers on YouTube. Bruce also runs photo workshops and provides 1 on 1 digital photography coaching.

Canon Geek on Google My Business

You might also like:

Recent Articles

  1. The Best Canon Rebel Buying Strategy Will Surprise You. Where To Look

    Feb 23, 24 11:03 AM

    Canon T5i - The more modern upgrade from the Canon T3i
    With all of the new camera offerings coming at us on a regular basis, it can be challenging to pick the best Canon Rebel Camera. Which Canon Rebel should you buy?

    Read More

  2. Best Canon Portrait Lens For 2024. EF vs. EF-S Portrait Lenses

    Feb 20, 24 08:00 PM

    Portrait taken with Canon 70-200 lens
    Which Canon portrait lens is right for you? Lens guide on how to choose the best Canon portrait lens and how to use best canon lens for portrait photography

    Read More

  3. Canon Camera Guide. Useful Advice on Canon Cameras-Lenses-Accessories

    Feb 20, 24 07:39 PM

    Welcome to Canon Camera Geek
    Helpful advice on Canon Cameras, Canon lenses, and Canon camera accessories. Answers to your questions about Canon equipment. Canon camera equipment guide.

    Read More

  4. Canon Camera Accessories-The 5 Must Have Gadgets And 5 Fun Accessories

    Feb 15, 24 02:11 PM

    Collection of Canon Camera Accessories
    Are you searching for Canon camera accessories? Here is what you need to know first. including a helpful list of useful articles on more accessories.

    Read More

  5. Canon Sling Bag Review. Advice On What Features You Need to Look For

    Feb 15, 24 10:30 AM

    Canon Sling Bag SR600
    The top camera bag design that's popular with Canon photographers. Here are vital features the Canon sling bag you must know about.

    Read More

  6. Best Canon Lens For Low Light Photography. Lenses For Dark Situations

    Feb 14, 24 12:57 PM

    Low lighting lens
    List of Canon lenses that work well in dark photography situations. Best Canon Lens For Low Light Photography Situations.

    Read More

  7. Battery Grip For EOS 100D-Rebel-SL1. Which One+Where Can You Get One?

    Feb 14, 24 11:27 AM

    Battery Grip Door
    Here is the answer to your question about the Battery Grip For EOS 100D-Rebel-SL1

    Read More

Sign up for a monthly update

Enter Your E-mail Address
Enter Your First Name

Don't worry — your e-mail address is totally secure.
I promise to use it only to send you Canon Geek Newsletter.