Canon t3i Sharpness Issues
with Canon EF 100-400 4.5/5.6 IS-II lens

by Uday
(California)

Canon EF 100-400 4.5/5.6 IS-II lens

Canon EF 100-400 4.5/5.6 IS-II lens

"I just bought the canon 100-400 4.5/5.6 IS-II lens and have an old T3i body. I have been using the 55-250 mm lens with the t3i for about 10 yrs and made the upgrade. I am having some focus issues using the t3i with the newer lens. Is it time to upgrade the body as well or is it just me not knowing what I am doing ? Some of the images on the AV mode are blurry with the 100-400 while I was test shooting in a store with the demo piece. Is the t3i too slow on shutter speed and auto focus for a 100-400 or does it have nothing to do with it ?

Thanks"


HI Uday,

Sorry you are having sharpness issues with a Canon EF 100-400 II lens mounted onto your Rebel t3i camera. The t3i was one of Canon's most successful cameras. Released over a decade ago in 2011, there are still so many t3i cameras around still being used. One of my old time favorites.

t3i


It is likely, as you guessed, a slow shutter speed that is causing blur from motion-not from focusing. The EF 100-400 is fully compatible with your t3i camera. Here is a post that explains the two main causes of unsharp photos: Fix Blurry Photos.

Fix Blurry Photos With Canon t3i and 100-400mm Lens

Without seeing a sample image or not knowing your camera settings, it is hard for me to give you a definitive answer to your question and help solve this issue. Is it possible you could send a photo or two, along with the camera settings that were used (f/stop, shutter speed, ISO)?

It is possible, but VERY UNLIKELY, that you had a bad copy of the EF 100-400mm 4.5/5.6 IS-II Lens. The Canon t3i does not support micro-adjustment of it's autofocusing system. Higher end Canon camera bodies, there is a micro auto-focusing adjustment to fine tune the sharpness between specific cameras and lenses.

The Image Stabilization (IS) setting can be used on your 100-400mm lens which can help with sharpness caused by slight camera movement (slow shutter speeds). Without seeing a sample image of the blur you are experiencing it is difficult for me to be sure what is causing the lack of sharpness.

Some might say that having such an amazing, modern lens like the EF 100-400 II is overkill for an older, less capable camera like the Rebel t3i, I say you should be able to take some great shots. I hope this helps. Feel free to provide the extra info and sample photo-you can email me directly-send to brucelovelace(at)yahoo.com.

Good luck,
Bruce

Canon Lenses
Canon 100-400mm Lens Sharpest Aperture
Canon 100-400 Image Stabilization

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Ask The Canon Geek.


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: YouTube. Visit the Canon Geek FaceBook Group. Bruce runs photo workshops and provides 1 on 1 digital photography coaching.


You might like these



Search for articles on this Site:


Recent Articles

  1. Canon EF 100-400mm f/4.5-5.6L IS II USM Corner Sharpness

    Oct 16, 21 08:35 PM

    Hello, I photograph old paintings (canon 5DS) and at the moment I use only primes. My favorite lens is the Canon 100mm 2.8 (not IS) macro. For me this

    Read More

  2. Need Clean Feed Out of EOS-7D
    For Live Stream Video

    Oct 09, 21 06:46 AM

    Hello, I seem to be in a bot of a mess. I have a Canon 7D I got back in 2012, and it still works great, accept the card reader for the camera. The pins

    Read More

  3. How To Set Self Timer on Canon Powershot SX740

    Oct 07, 21 04:30 PM

    I recently purchased a Cannon Power Shot SX740 HS and I can not find the setting to set the timer for a time delayed photo? I've gone from one end of

    Read More

  4. Which Canon Rebel Accessories Are Good Which Are Worthless For 2021

    Sep 30, 21 07:59 AM

    Are you looking for the best Canon Rebel Accessories? Get an overview of possibilities here. Read this first.

    Read More

  5. Best PowerShot Accessories And Why They Are Essential For You To Have

    Sep 29, 21 11:43 AM

    You've got your Canon Powershot camera, but now you need to know what are the best Powershot accessories to start with. Read this find out what's essential

    Read More



Sign up for a monthly update

Enter Your E-mail Address
Enter Your First Name
Then

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