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        Sony Vario-Tessar T* FE 24-70mm F4 ZA OSS vs Sony FE 28-70mm F/3.5-5.6 OSS on Sony A7 Review

        - by Lens Reviewer

        Lens Specification

        Model Sony Vario-Tessar T* FE 24-70mm F4 ZA OSS Sony FE 28-70mm F/3.5-5.6 OSS
        Focal Length 24-70 mm 28-70 mm
        Aperture F/4-F/22 F/3.5-5.6 - F/22-36
        Filter size 67 mm 55 mm
        Magnification 0.2 x 0.19 x
        Min. Focusing Distance 0.4 m 0.3 - 0.45 m
        Weather-sealed Yes  
        Diameter 73 mm 72.5 mm
        Length 94.5 mm 83 mm
        Weight 426 g 295 g
        Elements 12 9
        Groups 10 8


         

         

         

         

         

         

         

         

         

         

         

         

        Conclusion

        Sony Vario-Tessar T* FE 24-70mm F4 ZA OSS

        Pros

        • Bigger aperture
        • Wider focal length
        • Bigger magnification
        • Weather sealed

         

        Sony FE 28-70mm F/3.5-5.6 OSS

        Pros

        • Cheaper
        • Lighter

         


         Now, I will show you how the lens look like.

         

        Conclusion

         

        24-70mm

        • Looks more solid
        • Bigger
        • Longer

         

        28-70mm

        • Looks more plastic
        • Smaller
        • Shorter

          


        Distortion (1st: 24-70mm; 2nd: 28-70mm)

         

        24mm & 28mm

         

        35mm

         

        50mm

         

        70mm

         

        Conclusion

        Both have good distortion control through in-camera auto distortion correction.

         


        Sharpness (1st: 24-70mm; 2nd: 28-70mm)

        Click for original photo 

         

        24mm and 28mm

        F/4

         

        F/5.6

         

        F/8

         

        F/11

         

        F/16

         

        F/22

         

        34mm

        F/4

         

        F/5.6

         

        F/8

         

        F/11

         

        F/16

         

         

        F/22

         

        50mm

         

        F/5.6

         

        F/8

         

        F/11

         

        F/16

         

        F/22

         

        70mm 

        F/5.6

         

        F/8

         

        F/11

         

        F/16

         

        F/22

         

        Conclusion

        24mm/28mm

        F/4: 28-70mm sharper

        F/11-F/16: 24-70mm sharper

         

        35mm

        F/4-F/5.6: 28-70mm sharper

        F/11-F/22: 24-70mm sharper

         

        50mm

        F/5.6: 28-70mm sharper

        F/8-F/16: 24-70mm sharper

         

        70mm

        F/5.6-F/8: 28-70mm sharper

        F/16-F/22: 24-70mm sharper

         

         


        Vignetting Test (Left: 24-70mm; Right: 28-70mm)

         

        24mm  & 28mm
        F/4
         
        F/5.6
         
        F/8
         
        F/11
         
        F/16
         
        F/22
         
        34mm
        F/4
         
        F/5.6
         
        F/8
         
        F/11
         
        F/16
         
        F/22
         
        50mm 
        F/5.6
         
        F/8
         
        F/11
         
        F/16
         
        F/22
         
        70mm
        F/5.6
         
        F/8
         
        F/11
         
        F/16
         
        F/22

         

        Conclusion

         

        Canon 24-70mm has better vignetting control at telephoto end.

        Canon 28-70mm has better vignetting control at wide angle end.

         


        Flare & Ghosting Test

         

        24-70mm

        F/4

         

        F/5.6

         

         

         

         

        F/8

         

         

         

        F/11

         

        F/16

         

        F/22

         

        28-70mm

         

        Conclusion

        24-70mm has a better flare/ghosting control.

         


        Sunstar

         

        24-70mm

        24mm

        F/8

         

        F/11

         

        F/16

         

        F/22

         

        28-70mm 

         

        Conclusion

        24-70mm has a nicer sunstar.

         


        Conclusion

        Sony Vario-Tessar T* FE 24-70mm F4 ZA OSS

        Pros

        • Bigger aperture
        • Weather sealed
        • Better build quality
        • Sharper at small aperture
        • Better vignetting control at telephoto end
        • Nicer sunstar
        • Better ghosting/flare control.

         

        Sony FE 28-70mm F/3.5-5.6 OSS

        Pros

        • Cheaper
        • Lighter
        • Smaller
        • Sharper at big aperture
        • Better vignetting control at wide angle end

         


        More photos can be available at 24-70mm, 28-70mm and Comparison. My results are based on the lens I have used and does not mean all the lens have the same results due to quality control.