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 Olympus 8010 and Olympus E-M1 side-by-side from the front, back and top in their relative dimensions. Olympus 8010 has external dimensions of 98 x 64 x 24 mm (3.86 x 2.52 x 0.94″) and weighs 245 g (0.54 lb / 8.64 oz) (including batteries). Olympus E-M1 has external dimensions of 130 x 94 x 63 mm (5.13 x 3.68 x 2.48″) and weighs 497 g (1.10 lb / 17.53 oz) (including batteries).
Below you can see the front-view size comparison of the Olympus 8010 and the Olympus E-M1. Olympus 8010 is clearly the smaller of the two cameras. Its body is 32mm narrower, 30mm shorter and 39mm thinner than Olympus E-M1. As you can tell, actually this is not a fair size comparison since Olympus 8010 has a built-in lens but Olympus E-M1 doesn't. Once you put a lens on E-M1, its thickness will increase significantly.
Now lets look at the top view comparison of Olympus 8010 and Olympus E-M1.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus 8010 is significantly lighter (252g ) than the Olympus E-M1 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 E-M1, the total kit will weigh much higher.
Weather Sealing
LCD Screen Size and Features
Olympus E-M1's 3.00" LCD screen is slightly larger than Olympus 8010's 2.7" screen.
In addition to the size advantage, Olympus E-M1 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, Olympus 8010 has a fixed type screen which provides less flexibility in shooting positions compared to E-M1.