aker note IFD</td></tr>

<tr><td>Model</td><td>Camera model name set during reading and writing</td></tr>

<tr><td>MOVED_KEY</td><td>Tag key of last tag replaced by a higher priority tag
    in a call to FoundTag().</td></tr>

<tr><td>NEW_VALUE</td><td>Hash of new value information keyed by tag info reference.
    Elements of new value information hash are:
    <table class='clear'><tr><td>TagInfo</td><td>-</td><td>tag information reference</td></tr>
    <tr><td>DelValue</td><td>-</td><td>list of specific v