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 Ricoh GR Digital IV and Ricoh GR Digital III side-by-side from the front, back and top in their relative dimensions. Ricoh GR Digital IV has external dimensions of 109 x 59 x 33 mm (4.29 x 2.32 x 1.3″) and weighs 190 g (0.42 lb / 6.70 oz) (including batteries). Ricoh GR Digital III has external dimensions of 109 x 59 x 26 mm (4.29 x 2.32 x 1.02″) and weighs 208 g (0.46 lb / 7.34 oz) (including batteries).
Below you can see the front view size comparison of Ricoh GR Digital IV and Ricoh GR Digital III. Ricoh GR Digital IV has the same height and width with Ricoh GR Digital III. On the other hand, with a thickness of 33mm, it is 7mm thicker.
Here is the back view size comparison of Ricoh GR Digital IV and Ricoh GR Digital III.
Now lets look at the top view comparison of Ricoh GR Digital IV and Ricoh GR Digital III.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Ricoh GR Digital IV is 18g lighter than the Ricoh GR Digital III but we don't think this will make a significant difference.
Unfortunately neither Ricoh GR Digital IV nor Ricoh GR Digital III 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
Ricoh GR Digital IV and Ricoh GR Digital III's LCD screens has the same diagonal size of 3".
Unfortunately, both cameras has fixed screens so they don't tilt or flip in directions.