Comparison of Zeiss 35mm f/2 Loxia 2/35 and Tamron SP AF 17-50mm ƒ/2.8 XR Di II VC LD Aspherical IF

Attribute	Tamron SP AF 17-50mm ƒ/2.8 XR Di II VC LD Aspherical IF ×	Zeiss 35mm f/2 Loxia 2/35 ×
Aperture (f)	2.80 - 32.00	2.00 - 22.00
Filter Size (mm)	72	52
Notes	Vibration Compensation (VC) Image Stabilization; Available AF mounts: Canon, Nikon; Includes petal type lens hood.	Sony E-Mount (full frame); Weather-resistant lens mount gasket; Included Accessories: Lens hood, front and rear lens caps, de-click key.
Closest Focus (m)	0.29	0.3
Magnification Ratio (x)	0.21	0.17
Diameter (mm)	79.6	62.1
Type	Standard Zoom	Wide Prime
APS Equivalent	1.5x: 25.5 - 75mm; 1.6x: 27.2 - 80mm	1.5x: 52.5mm
Diaphragm Blades	7	10
Image Circle	Image Circle	35mm
Focal Length (mm)	17.00 - 50.00	35.00
Brand	Tamron	Carl-zeiss
Name	Tamron SP AF 17-50mm ƒ/2.8 XR Di II VC LD Aspherical IF	Zeiss 35mm f/2 Loxia 2/35
Weight (g)	570	340
Diaphragm Blades Type	rounded	rounded
Lens Construction	19 elements in 14 groups, including Low Dispersion and Aspherical elements	9 elements in 6 groups, front element made of special glass with anomalous partial dispersion; Zeiss T* anti-reflective coating
Diagonal Angle of View (degree)	31.20 - 78.80	63.00
Length (mm)	94.5	59.2
Zoom System	Rotary	-
Focus Details	Internal, with built-in focus motor	Manual focus only, with large 180 degree focus throw, engraved distance and DOF scales