bought a Sigma 100-400

Started 10 months ago | Discussions thread
sirhawkeye64 Veteran Member • Posts: 8,762
Re: bought a Sigma 100-400
1

Mooncusser wrote:

Got my Z 100-400mm yesterday and for comparison shot it at 300mm and compared to AF-P 70-300mm at the same 300mm with the same settings on a Z6ii (Aperture set at F7.1, Auto ISO, F7.1, Z lens at 1/400sec, F lens at 1/350 sec). At about 25 feet, took pictures of a bookshelf and the titles on the book bindings. Looked at the images about 50% from center. There was a bit of an overall color difference as white paint was brighter with the 100-400 lens but could not see much of a difference in resolution until I compared the pictures at 300% in Photoshop. Very slight differences in pixel usage that were more obvious at 400% but surprisingly close. Not a rigorous test but enough to convince me to keep the AF-P lens for when I need a lighter and smaller setup with a bit less reach.

I find that a little surpsing, especially when comparing a $600 lens to a $2700 lens, and the 100-400 is operating presumably in a more sharp focal length (obviously many telephoto zooms tend to suffer on the wide or short end at the extremes, or both). So if this is true that the 300mm can hold up pretty well to the 100-400 Z until about 300%, then that makes me wonder how badly I personally need a 100-400 versus a used 70-300 for 1/6 the price.

I'm sure the Z 100-400 probably beats out the AFP lens in other areas, but usually sharpness is something high on people's priority list.  I guess it will be interesting when other tests come out and people start comparing the Z to lenses like the 180-400, 200-500 and the Tamron and Sigma 100-400's (as well as Canon and Sony).

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