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24-240 / 24-105 7.1 / 24mm IS comparison

Started Sep 20, 2020 | Discussions thread
jwilliams Veteran Member • Posts: 6,385
Would love to see ...

highdesertmesa wrote:

FWIW, the 24-105 STM is much better corrected using RAW and doing so manually in Capture One — it corrects to where it looks better than the 24-240 in the corners at 24mm. Canon didn’t do enough peripheral sharpening correction in their processing, and Lightroom/Adobe simply mimics what Canon does in-camera. On the 24-240, the distortion correction is too extreme for extra sharpening in the corners to make any difference. My guess is that given the resources available during the pandemic, Canon engineers didn’t pursue peripheral sharpening on the 24-105 STM because it hadn't helped the the 24-240.

Would love to see some examples if possible. I have the f71. and 4L versions of the 24-105. Love the size/weight of the f7.1, especially on the RP. I don't yet have SW setup to do RAW conversions so I can only see JPG results. Would love to see how much native distortion the f7.1 has and how it can be cleaned up so to speak at 24mm.

I'm terrible at RAW processing, but I have wondered how the f7.1 version would perform if you did the distortion correction manually and didn't try to get all of it out. In other words partially correct the distortion while leaving some of it in hopes that sharpness would be better. For scenes without straight line this might produce better results.

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Jonathan

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