Size and weight are big decision factors when you are trying to find the ideal camera for your needs.
In this section, we are going to illustrate the Panasonic GF8 and Pentax W80 side-by-side from the front, back and top in their relative dimensions. Panasonic GF8 has external dimensions of 107 x 65 x 33 mm (4.21 x 2.56 x 1.3″) and weighs 266 g (0.59 lb / 9.38 oz) (including batteries). Pentax W80 has external dimensions of 100 x 56 x 25 mm (3.94 x 2.2 x 0.98″) and weighs 156 g (0.34 lb / 5.50 oz) (including batteries).
Below you can see the front-view size comparison of the Panasonic GF8 and the Pentax W80. Pentax W80 is clearly the smaller of the two cameras. Its body is 7mm narrower, 9mm shorter and 8mm thinner than Panasonic GF8. As you can tell, actually this is not a fair size comparison since Pentax W80 has a built-in lens but Panasonic GF8 doesn't. Once you put a lens on GF8, its thickness will increase significantly.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Pentax W80 is significantly lighter (110g ) than the Panasonic GF8 which may become a big advantage especially on long walking trips.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on GF8, the total kit will weigh much higher.
Weather Sealing
Thanks to the weather-sealed body of the W80, you can use this camera with more confidence under conditions where there is risk of exposure to water and dust compared to the GF8.
LCD Screen Size and Features
Panasonic GF8's 3.00" LCD screen is slightly larger than Pentax W80's 2.5" screen.
In addition to the size advantage, Panasonic GF8 LCD screen also has a
Tilting feature where you can change the angle of the screen to make it easier to shoot from waist or over-the-head levels. On the other hand, Pentax W80 has a fixed type screen which provides less flexibility in shooting positions compared to GF8.