Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Canon SX730 HS and Canon SX720 HS side-by-side from the front, back and top in their relative dimensions. Canon SX730 HS has external dimensions of 110 x 64 x 40 mm (4.33 x 2.52 x 1.57″) and weighs 300 g (0.66 lb / 10.58 oz) (including batteries). Canon SX720 HS has external dimensions of 110 x 64 x 36 mm (4.33 x 2.52 x 1.42″) and weighs 270 g (0.60 lb / 9.52 oz) (including batteries).
Below you can see the front view size comparison of Canon SX730 HS and Canon SX720 HS. Canon SX730 HS has the same height and width with Canon SX720 HS. On the other hand, with a thickness of 40mm, it is 4mm thicker.
Here is the back view size comparison of Canon SX730 HS and Canon SX720 HS.
Now lets look at the top view comparison of Canon SX730 HS and Canon SX720 HS.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon SX720 HS is 30g lighter than the Canon SX730 HS but we don't think this will make a significant difference.
Unfortunately neither Canon PowerShot SX730 HS nor Canon PowerShot SX720 HS provides any type of weather sealing in their body, 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 SX730 HS and Canon SX720 HS's LCD screens has the same diagonal size of 3.00".
On the other hand, Canon SX730 HS features a Tilting screen
where you can change the angle of the screen to make it easier to shoot from waist or over the head levels whereas the Canon SX720 HS has a fixed type screen which provides less flexibility in shooting positions compared to SX730 HS.