What software can I use to open the ios format?

In windows8, double-click to load the image directly, and the image is in the "local" drive directory.

Take this win8. 1 image as an example.

Double-click directly to load the image.

If your computer is not win8, you can open the image file with "Good Pressure".

In addition, the application format used by Apple's mobile phone ios system is. Ipa can be installed on your iphone, ipod touch or ipad by using auxiliary software such as pp assistant or itools. This should not be confused with ISO documents.

Photography also has a very important parameter-ISO, which is the sensitivity. Using higher ISO in dark conditions allows photographers to use higher shutter speed and reduces the risk of taking bad photos caused by jitter. However, high ISO will bring more noise. In the case of tripod, ISO should be as low as possible.