This enumeration specifies the size(s) the Source can/should use to acquire image data.
| IG_TW_SS_2A0 |
| IG_TW_SS_4A0 |
| IG_TW_SS_A0 |
| IG_TW_SS_A1 |
| IG_TW_SS_A10 |
| IG_TW_SS_A2 |
| IG_TW_SS_A3 |
| IG_TW_SS_A4 |
| IG_TW_SS_A4LETTER |
| IG_TW_SS_A5 |
| IG_TW_SS_A6 |
| IG_TW_SS_A7 |
| IG_TW_SS_A8 |
| IG_TW_SS_A9 |
| IG_TW_SS_B3 |
| IG_TW_SS_B4 |
| IG_TW_SS_B5LETTER |
| IG_TW_SS_B6 |
| IG_TW_SS_BUSINESSCARD |
| IG_TW_SS_C0 |
| IG_TW_SS_C1 |
| IG_TW_SS_C10 |
| IG_TW_SS_C2 |
| IG_TW_SS_C3 |
| IG_TW_SS_C4 |
| IG_TW_SS_C5 |
| IG_TW_SS_C6 |
| IG_TW_SS_C7 |
| IG_TW_SS_C8 |
| IG_TW_SS_C9 |
| IG_TW_SS_ISOB0 |
| IG_TW_SS_ISOB1 |
| IG_TW_SS_ISOB10 |
| IG_TW_SS_ISOB2 |
| IG_TW_SS_ISOB3 |
| IG_TW_SS_ISOB4 |
| IG_TW_SS_ISOB5 |
| IG_TW_SS_ISOB6 |
| IG_TW_SS_ISOB7 |
| IG_TW_SS_ISOB8 |
| IG_TW_SS_ISOB9 |
| IG_TW_SS_JISB0 |
| IG_TW_SS_JISB1 |
| IG_TW_SS_JISB10 |
| IG_TW_SS_JISB2 |
| IG_TW_SS_JISB3 |
| IG_TW_SS_JISB4 |
| IG_TW_SS_JISB5 |
| IG_TW_SS_JISB6 |
| IG_TW_SS_JISB7 |
| IG_TW_SS_JISB8 |
| IG_TW_SS_JISB9 |
| IG_TW_SS_NONE |
| IG_TW_SS_USEXECUTIVE |
| IG_TW_SS_USLEDGER |
| IG_TW_SS_USLEGAL |
| IG_TW_SS_USLETTER |
| IG_TW_SS_USSTATEMENT |