Compare Olympus 150-400mm F4.5 vs Panasonic DG 25-50mm F1.7

9 blades

9 circular aperture diaphragms

White

Super Telephoto Zoom Lens

MFT

Full-frame

Focus limiter, Tripod collar

Micro Four Thirds-mount

Micro Four Thirds mount

Magnesium alloy

Stepper motor

28 elements

16 elements

18 groups

11 groups

1 EDA + 4 super ED + 2 ED + 2 HR + 1 HD elements, Z Nano Coating groups

1 aspherical lens, 3 ED lenses, 1 UHR lens groups

95 mm / 3.74 in

77 mm

116 mm / 4.57 in

87.6 mm

214 mm / 8.43 in

127.6 mm

1875 g / 66.25 oz

654 g

8.3° Diagonal | 6.9° Horizontal | 4.6° Vertical (wide) ~ 3.1° Diagonal | 2.6° Horizontal | 1.7° Vertical (tele)

47° ~ 24°

f/4.5 ~ f/22 / f/5.6 ~ f/29 with built-in teleconverter

F/1.7 ~ f/16

Yes

2.0

150 mm ~ 400 mm / 187.5 mm ~ 500 mm with built-in teleconverter

0.28 m / 0.92 ft @ 25mm, 0.31 m / 1.02 ft @ 50mm

300.0 mm ~ 800.0 mm / 375 mm ~ 1000 mm with built-in teleconverter

50-100 mm

Internal

Yes (4.5 stops)

-10°C ~ 40°C

Yes

Dust, moisture

External zoom (zoom lock available)

External zoom

0.71x

0.21x @ 50mm

1300 mm / 51.18 in

0.37 m

Lens hood included

2019-01-24

2021-07-08

H-X2550