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Focus Error with Canon EF 100mm f/2.8 macro

Started Sep 10, 2020 | Discussions
CoreyRodeo New Member • Posts: 4
Focus Error with Canon EF 100mm f/2.8 macro

Hello guys,
I am having trouble with my Canon EF 100mm f/2.8 macro lens.
As shown in the picture, the focus line is appearing in the picture. I test with 3 different cameras and the result are the same.
Please let me know is that hardware error or others? is that fixable? 
I don't know how is that happen. I bought it 2 years ago, I didn't use much and never dropped it. 
Please help me.
Thanks in advance.

hotdog321
hotdog321 Forum Pro • Posts: 21,141
Re: Focus Error with Canon EF 100mm f/2.8 macro

CoreyRodeo wrote:

Hello guys,
I am having trouble with my Canon EF 100mm f/2.8 macro lens.
As shown in the picture, the focus line is appearing in the picture. I test with 3 different cameras and the result are the same.
Please let me know is that hardware error or others? is that fixable?
I don't know how is that happen. I bought it 2 years ago, I didn't use much and never dropped it.
Please help me.
Thanks in advance.

I forgot what it's called (someone will chime in--I think it is an interference pattern) but the very fine surface texture is causing the color band.

It's a problem that has nothing to do with the lens--it's an artifact created by (I think) the ultra-fine pixel pattern on the sensor interfering with the surface texture.

I imagine if you shoot just about any other subject there will be no color band.

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 hotdog321's gear list:hotdog321's gear list
Canon EOS 5D Mark IV Canon EF 100mm f/2.8 Macro USM Canon EF 70-200mm F2.8L IS II USM Canon EF 24-70mm F2.8L II USM Canon EF 16-35mm F4L IS USM +3 more
OP CoreyRodeo New Member • Posts: 4
Re: Focus Error with Canon EF 100mm f/2.8 macro

Yes, sometime it appears orange color, sometime 2 color. I was never experienced before. That's why I think my lens broke. What can I do with that? Camera sensor cleaning and lens cleaning would help? 
Thank you very much for the reply.

rmexpress22 Senior Member • Posts: 2,304
Re: Focus Error with Canon EF 100mm f/2.8 macro
1

Looks like chromatic aberration. Stop down 1 or 2 stops and it should go away. Or remove it in post for this particular image. Very easy to do.

 rmexpress22's gear list:rmexpress22's gear list
Canon EOS 5D Mark IV Canon EOS M6 Canon EF-M 22mm f/2 STM Sigma 85mm F1.4 Art Canon PowerShot G16 +20 more
J A C S
J A C S Forum Pro • Posts: 20,544
Re: Focus Error with Canon EF 100mm f/2.8 macro
OP CoreyRodeo New Member • Posts: 4
Re: Focus Error with Canon EF 100mm f/2.8 macro

Thanks a lot, I just learnt new knowledge.

OP CoreyRodeo New Member • Posts: 4
Re: Focus Error with Canon EF 100mm f/2.8 macro

Thanks for the information. It is really healpful.

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