Canon-Mount Super Zoom Lens Flare Comparison
This flare comparison is part of the Canon EF-S 18-200mm f/3.5-5.6 IS Lens Review, but it is also useful for the following reviews:
The following samples were shot with a Canon EOS 50D using the Standard Picture Style and AV mode with -2/3 EV dialed in. The sun is the ultimate flare source, but I haven't figured out how to stop it from moving yet. So, the camera was repositioned for each lens/focal length combination tested - to catch the sun in the top left corner of the frame.
Lens hoods were installed for all shots. The tiny bright spots in the sky seen in some longer focal length pictures are insects.
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To my eyes, the Canon EF-S 18-200mm f/3.5-5.6 IS Lens is the clear winner in this comparison. It is the most resistant to flare.
The Sigma 18-200mm f/3.5-6.3 DC OS Lens and Sigma 18-250mm f/3.5-6.3 DC OS HSM Lens trail this pack in regards to flare. Particularly interesting is the 18-250's 200mm f/11 flare dot in the lower right area of the frame.