TAMRON
Model 40A
High Ratio
Macro
Zoom
Adaptall-2 Symbol35~135mmF/3.5-4.5
High Ratio Macro Zoom
Tamron Adaptall-2 35-135mm F/3.5-4.5 Model 40A Lens

Tamron Adaptall-2 35-135mm F/3.5-4.5 Model 40A: A moderate wide angle to moderate telephoto zoom lens with above average optical performance. This lens is more compact than the earlier model 22A and features a completely new optical design which retains a floating front focus group as used in the earlier model 22A optical design. This lens trades off the earlier model's CF macro ability at 135mm in favor of a significantly more compact overall design. Maximum macro magnification is achieved at 35mm by using the built-in macro button and turning the macro helicoid ring, an operation which is similar in function to Tamron's SP 28-135. Although the macro function is less convenient compared to the earlier model 22A design, this lens is more compact and uses smaller filters.

Lens Specifications:

Lens Model 40A
Focal Length 35 — 135mm
Aperture Range f/3.5~4.2 — 32, AE
Angle of View 63°~18°
Optical Construction
(Groups / Elements)
13 / 15
Min. Focus from Film Plane 31.5" (0.8m) at f=135mm
11" (0.28m) at 35mm in macro mode
Macro Mag. Ratio [w/2X Converter] 1:4 [1:2] at f=35mm
Filter Size 58mm
Diameter 2.6" (65mm)
Length at
[w/Nikon mount]
3.8" (96mm)
[4.0" (100.5mm)]
Weight 19.3 oz. (547g)
Lens Hood Bayonet type #79FH, (optional extra).
Accessory Accepts SP 2X tele-converter.
Tamron 35-135 F/3.5-4.5
F/no. RESOLUTION
at 35mm
at 1:50 magnification
CONTRAST
at 35mm
(30 lines/mm)
Center
Lines/mm
Corner
Lines/mm
Center % Corner %
3.5 50 45 45 33
5.6 56 50 55 41
8 63 56 66 54
11 63 56 67 50
16 56 50 56 44
22 56 50 46 37
32 50 45 34 38
Tamron 35-135 F/3.5-4.5
F/no. RESOLUTION
at 80mm
at 1:50 magnification
CONTRAST
at 80mm
(30 lines/mm)
Center
Lines/mm
Corner
Lines/mm
Center % Corner %
4.3 50 45 47 34
5.6 56 50 57 44
8 56 50 68 54
11 63 56 64 51
16 63 56 54 42
22 56 50 46 38
32 50 45 35 29
Tamron 35-135 F/3.5-4.5
F/no. RESOLUTION
at 135mm
at 1:50 magnification
CONTRAST
at 135mm
(30 lines/mm)
Center
Lines/mm
Corner
Lines/mm
Center % Corner %
4.5 56 50 46 33
5.6 56 50 56 42
8 63 56 69 55
11 63 56 63 52
16 56 50 54 44
22 56 50 46 36
32 50 45 34 28
Tamron 35-135 F/3.5-4.5
F/no. MACRO RESOLUTION
at 35mm/ 1:4
Center
Lines/mm
Corner
Lines/mm
3.5 32 29
5.6 36 29
8 36 29
11 40 32
16 40 32
22 45 36
32 40 32
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