Canon Community Canon Community
 


Reply
Highlighted
Occasional Contributor
Posts: 9
Registered: ‎09-06-2018
Accepted Solution

Is this normal for the SL2? Chromatic Aberration

[ Edited ]

Hello! I recently purchased a canon sl2 from an eBay seller. However upon further inspection is appears that any images with direct sunlight have major chromatic aberrations. Pretty sure it's not my lens because I also have another lens and it does the same exact thing. The lenses I am shooting with are the canon 50mm 1.8 STM and the Canon 24MM 2.8 STM. I contacted the eBay seller directly and they had mentioned that my camera came with a two year warrarnty, however they shipped from China and I don't neccesarily want to go through the struggle of shipping it off if this a is a normal thing that happens with this camera. Here is the link that gives a small demonstation I created in lightroom. Note this is not the only instance, this also happens with different scenes. Pretty much any bright sunlight regardless of my aperature and shutter speed settings seem to result in the same artifacting. I have also tried ND filters as well. 

VIP
Posts: 11,622
Registered: ‎12-07-2012

Re: Is this normal for the SL2? INSANE CHROMATIC ABERRATION

First, cameras don't have or create CA.  That is a lens issue solely.  Now is it really CA?  The first thing to try is to buy a new high quality SD card.  Don't ever buy any cheap or off brand SD cards.

It would be better if you posted a sample instead of showing a vid.  At any rate you can correct this in LR.

 

I would highly recommend you not buy any grey market camera gear anymore.  It is simply not worth the risk or frustration if something goes wrong.  It might be a good idea to return this and buy a Canon USA camera.

 

Post a good example.

EOS 1DX and 1D Mk IV and several lenses!
Occasional Contributor
Posts: 9
Registered: ‎09-06-2018

Re: Is this normal for the SL2? INSANE CHROMATIC ABERRATION

The video was to soley show that no matter what it does not get corrected. Attatched are some more photos, and both my lenses were purchased from canon at different times. My SD card is also a decent brand Sandisk extreme pro sdxc 95 mb/s defining lines.jpg

Esteemed Contributor
Posts: 3,489
Registered: ‎02-17-2016

Re: Is this normal for the SL2? INSANE CHROMATIC ABERRATION

I don't see any "insane chromatic abberation" just some motion blur and out of focus artifacts.

VIP
Posts: 8,575
Registered: ‎08-13-2015

Re: Is this normal for the SL2? INSANE CHROMATIC ABERRATION


@qfertig wrote:

The video was to soley show that no matter what it does not get corrected. Attatched are some more photos, and both my lenses were purchased from canon at different times.

 

My SD card is also a decent brand Sandisk extreme pro sdxc 95 mb/s 


Are you using a full size SD card?  What is the GB capacity of the card?  Is it a UHS-1 card?  

 

I would not SDXC cards with that body, just 32GB or smaller.  All that camera needs is Sandisk Extreme.  The Extreme Pro is probably overkill, if you are only shooting stills.  The body does not have the FPS to use a faster card effectively.

BTW, I see a lot of stuff that is OOF, out of focus, due to the DOF of the lens, but not much CA.

----------------------------------------------------------------------------------------------------------------------------------------------------------

"I don't rent software. I use Photoshop CS6, ACR 9.8 and Lightroom 6.8 ."
Occasional Contributor
Posts: 9
Registered: ‎09-06-2018

Re: Is this normal for the SL2? INSANE CHROMATIC ABERRATION

[ Edited ]

Thanks for you reply, still a noob about the technicalities of photos. I bought the card off of recommendations when searching around for best performing SD cards for 1080p video and shooting in 60fps. My main purpose is for video, and the card was on sale on Amazon, so if I upgrade in the future it will end up helping me. But yes, the more I do some research the more I am seeing of similar things but not the exact same.  

 

This is my card: It's a 64gb UHS-I

VIP
Posts: 11,622
Registered: ‎12-07-2012

Re: Is this normal for the SL2? INSANE CHROMATIC ABERRATION

Now you know what I asked, "Now is it really CA?"  It always helps if you have a problem to pursue the correct problem.

Depending on the vendor, Amazon is not the best place to buy a SD card.  It could be OK, or not.

 

"... best performing SD cards for 1080p video and shooting in 60fps."

 

You did not pick the best camera for shooting video. I think you got what you got.

 

 

EOS 1DX and 1D Mk IV and several lenses!
Reputable Contributor
Posts: 778
Registered: ‎06-11-2013

Re: Is this normal for the SL2? Chromatic Aberration

[ Edited ]

I do see some CA in the sample image you posted.... but nothing extreme. There is some red CA at the player's hand, where the out of focus music or mic stand crosses.... and there's some purple CA on the out of focus area around one of the adjusting knobs.

 

Neither is unusual or all that extreme, though. They might be pretty easily fixed in a still image like this, in post-processing. Some software has "lens profiles" built in that can automatically correct it... or "sliders" used to tune it out... or it can be retouched away manually using something like the color replacement brush in Photoshop (not sure if Elements has it, too).

 

As stated, CA is lens-related. CA occurs at high contrast transitions, when the different colors of light don't all focus in precisely the same way. Highly reflective surfaces lke chrome also tend to cause it, especially when slightly out of focus. Both the lenses you mention are somewhat "budget" type, which might not be ideal to keep CA to a minimum... but CA can occur even with much more expensive, high quality lenses as well, under extreme lighting conditions.

 

You mention using filters and those can cause or amplify CA.  Only buy and use high quality, multi-coated filters, to keep it to a minimum. Try not using any filters at all, as much as posible. Also get and use a lens hood.

 

When CA is occuring around reflective surfaces, it may help to use a Circular Polarizing filter, which can reduce reflections. Again, for best results only buy and use high quality multi-coated filters (anything you put in front of your lens will have effect on every image).

 

Buying from China off eBay.... you probably got a "gray market" camera. It's no different from a camera officially imported and sold in N. America (or wherever), but will not have a N. American warranty. If any repair is needed, you will have to return it to the point of origin... or pay for the repairs here. That's just the risk you take with gray market items... Most never need any warranty work, but who knows! "Stuff" happens!

 

I don't know why memory cards are being discussed. They have no effect one way or another on CA, that I'm aware of.

 

EDIT:

 

I hope you don't mind, I downloaded your image, opened it in Photoshop to look at it more closely, then did some retouching on the CA (mostly on the mic/music stand, and around the guitar frets, adjusting knobs and logos). I just used Photoshop color replacement brush and clone to reduce or eliminate the CA manually. It was no big deal and only took a few minutes. (Also, couldn't help myself, cloned out some of the knicks in the guitar's finish.) See what you think....

 

defining_lines_edited.jpg

 

I don't shoot video, so don't know how to deal with CA in that.

 

***********


Alan Myers
San Jose, Calif., USA
"Walk softly and carry a big lens."
GEAR: 5DII, 7DII (x2), 7D(x2) some other cameras, various lenses & accessories
FLICKR & ZENFOLIO 

 

 

VIP
Posts: 8,575
Registered: ‎08-13-2015

Re: Is this normal for the SL2? INSANE CHROMATIC ABERRATION


@qfertig wrote:

Thanks for you reply, still a noob about the technicalities of photos. I bought the card off of recommendations when searching around for best performing SD cards for 1080p video and shooting in 60fps. My main purpose is for video, and the card was on sale on Amazon, so if I upgrade in the future it will end up helping me. But yes, the more I do some research the more I am seeing of similar things but not the exact same.  

 


I do not advise buying cards from Amazon.  You will get whata you pay for.  A good online source for memory cards is B&H Photo Video in New York City. 

As for the CA in your images, I do not see much in the areas that are in focus.  It shows up mostly in the areas that are out of focus, which is "normal" for inexpensive lenses due to the physics behind how lenes work. 

 

Better lenses contain additional focusing elements to minimize CA in OOF areas, for clean bokeh.  Much of the CA can be automatically removed with post processing software, too.  Canon's DPP software corrects Canon lenses pretty well.

 

As for shooting video with the SL2, do not expect it to perform like $30,000 professional video camera, or even a $5000 video camera.  You will encounter limits on file size and recording times, all of which are documented in the full instruction manual, which can be downloaded from Canon Support.

----------------------------------------------------------------------------------------------------------------------------------------------------------

"I don't rent software. I use Photoshop CS6, ACR 9.8 and Lightroom 6.8 ."
Occasional Contributor
Posts: 9
Registered: ‎09-06-2018

Re: Is this normal for the SL2? INSANE CHROMATIC ABERRATION

[ Edited ]

I think for what I could afford, it was the best option. However, I would be more than welcome to suggestions that are better than the SL2 for the same price point if I were to return this camera. Can't even afford a $1200 camera and everywhere you look on the web "Canon SL2 the best budget video production camera!" I am just starting out as a photographer, video producer, and I am in school sustaining myself off of my own income from gigs and working 50-60 hours a week. My camera already costs more than what I paid for my car. But as it is, if something is better for the same or close to a price point (not 300 dollars more than what this body costs) I would love to know,  I also will need a second camera soon for shooting video by myself. 

powered by Lithium

LIKE US on Facebook FOLLOW US on Twitter WATCH US on YouTube CONNECT WITH US on Linkedin WATCH US on Vimeo FOLLOW US on Instagram SHOP CANON at the Canon Online Store
© Canon U.S.A., Inc.   |    Terms of Use   |    Privacy Statement