Canon 50mm f1.4 owners - do you get CA at 1.4?

My post the other day created a split between those that are happy with this lens wide open and those complaining of softness and CA. So I want to establish whether the quality is the same across the batch or whether they are divided into good and bad copies.

Softness at 1.4 can be affected by many factors, but CA is either there or it's not.

If every lens suffers CA wide open then I know myself and many others most likely don't have bad copies and I won't bother exchanging mine.

Thanks,
George

I'd say mine is just about useable from a sharpness point of view at 1.4 but it depends on the subject matter. It definately sharpens up a lot by 1.8 which is my preferred aperture for shooting. From a CA point of view I can't say I've noticed anything horrendous but I don't think I've shot any high contrast scenes with it wide open, mainly I've been using it for low/natural light images indoors. If you want I'll try shooting something high contrast wide open tonight and see how it performs. Overall I'm very happy with it as I had low expectations of it's wide open performance before I bought it and I think it's probably better than I expected, it think it is a real bargain for the price.

Yes please, it would be good to see this lens tested for CA at 1.4.
It may expose a weekness some owners are unaware of.

Mine is soft, and has some CA.
Example (click for larger image)

HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO

René Damkot wrote in post #2126573
Mine is soft, and has some CA.

I'm glad you test your lenses, too bad about the possible imperfections...
I followed your information on a previous lens and mine lens was a lot different in the corners than yours...I just didn't like the weak resolution of it, so I'm returning it to upgrade, for some L glass...

I find the 50mm 1.4 to be the standard lens I compare my other ones too...It is certainly worth the price...

I'll now test it again, to be certain it doesn't have something wrong with it, that I hadn't noticed in the past...

Could someone tell me...
What does CA stand for?

here

Chromatic Aberration in a Single Lens
Chromatic aberration or "color fringing" is caused by the camera lens not focusing different wavelengths of light onto the exact same focal plane (the focal length for different wavelengths is different) and/or by the lens magnifying different wavelengths differently. These types of chromatic aberration are referred to as "Longitudinal Chromatic Aberration" and "Lateral Chromatic Aberration" respectively and can occur concurrently. The amount of chromatic aberration depends on the dispersion of the glass.


Longitudinal or Axial Chromatic Aberration
Focal length varies with color wavelength Lateral or Transverse Chromatic Aberration
Magnification varies with color wavelength

Chromatic aberration is visible as color fringing around contrasty edges and occurs more frequently around the edges of the image frame in wide angle shots.

MikeMcL wrote in post #2126685
here

Chromatic Aberration in a Single Lens
Chromatic aberration or "color fringing" is caused by the camera lens not focusing different wavelengths of light onto the exact same focal plane (the focal length for different wavelengths is different) and/or by the lens magnifying different wavelengths differently. These types of chromatic aberration are referred to as "Longitudinal Chromatic Aberration" and "Lateral Chromatic Aberration" respectively and can occur concurrently. The amount of chromatic aberration depends on the dispersion of the glass.


Longitudinal or Axial Chromatic Aberration
Focal length varies with color wavelength Lateral or Transverse Chromatic Aberration
Magnification varies with color wavelength

Chromatic aberration is visible as color fringing around contrasty edges and occurs more frequently around the edges of the image frame in wide angle shots.

Fantastic response and quick too...greatly appreciated...my hat off to you, Mike...I will now proceed to test my lens for CA too...

Depending on the shooting conditions - I got some slight but noticeable CA the other day shooting a flash-lit subject (person) with a fairly bright sky behind them at f/2.8 - CA was mostly around the hair. I don't use it at f/1.4 in conditions which would produce noticeable CA so I can't really comment there.

minei s fairly new and hasn't seen many shots at all, but I haven't noticed any major amounts of CA yet.

yes, wide open it definitely shows some CA.

Not horrible, but its there.

johnstoy wrote in post #2126671
I'm glad you test your lenses,

Actually, I don't. Unless I see a problem in a 'real life' shot.
This was a quick series I did to show at a photography course what happens when you stop down the aperture on a lens

Was the Sigma that bad? I have the 20/1.8 and mine is at least as good as my 20-35L (in real life situations, haven't "tested" yet )

As a wide angle lens the 20mm 1.8, provided no better high resolution at similar wide angle settings than the zooms I own...As prime glass I expected slightly better results...

It's not a problem for me because of fast turn around I can get my Long L lens instead...and apply credit toward it...I chose store credit because of the Canon rebates this month, and because I expect to purchase prime birding lens...

As for usage, I'll now add a Canon 24mm 1.4L to my wish list...
So far, I am happy with Canon's lens performance and will stick with the brand for now...

The Canon 50mm 1.4 has great, high resolution as does the 85mm 1.8...Even my 28mm-135mm IS is terrific in comparison...

you should refer to this thread
https://photography-on-the.net/forum/showthre​ad.php?t=227569

blam wrote in post #2127466
you should refer to this thread
https://photography-on-the.net/forum/showthre​ad.php?t=227569

He did:

curiousgeorge wrote in post #2126400
My post the other day created a split between those that are happy with this lens wide open and those complaining of softness and CA.

Some CA and softness, particularly in corners, is to be expected with any fast prime, they should sharpen up fast though. CA will also get worse with closer focus.

My test are here.

Corner crops
f1.4