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 Canon SX510 HS and Olympus SZ-30MR side-by-side from the front, back and top in their relative dimensions. Canon SX510 HS has external dimensions of 104 x 70 x 80 mm (4.09 x 2.76 x 3.15″) and weighs 349 g (0.77 lb / 12.31 oz) (including batteries). Olympus SZ-30MR has external dimensions of 106 x 69 x 40 mm (4.17 x 2.72 x 1.57″) and weighs 226 g (0.50 lb / 7.97 oz) (including batteries).
Below you can see the front-view size comparison of the Canon SX510 HS and the Olympus SZ-30MR. Olympus SZ-30MR is 1mm shorter and 40mm thinner than Canon SX510 HS but it is also 2mm wider.
Now lets look at the top view comparison of Canon SX510 HS and Olympus SZ-30MR.
Weight is another important factor, especially when deciding on a camera that you want to carry with you all day.
Olympus SZ-30MR is significantly lighter (123g ) than the Canon SX510 HS which may become a big advantage especially on long walking trips.
Weather Sealing
Unfortunately neither the Canon PowerShot SX510 HS nor Olympus SZ-30MR provides any type of weather sealing in their bodies, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections: Top Compact Cameras with Weather Sealing
LCD Screen Size and Features
Canon SX510 HS and Olympus SZ-30MR's LCD screens have the same diagonal size of 3.00 inches.
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.