The VariationImages response group displays different variations of the same item in four sizes: swatch, small, medium, and large, where the swatch image is smaller than the small image. VariationImages is used when there are variations of an item for sale. For example, a shirt for sale might come in four colors. If VariationImages is used as the response group, the shirt will be displayed in sixteen images: four image sizes of each of the four colors.
Parent ASINs do not always have images associated with them; their children, however, should.
Sample Response Snippet (REST)
<ImageSets>
<ImageSet Category="primary">
<SmallImage>
<URL>
http://images.amazon.com/images/P/B99999999A.01._SCTHUMBZZZ_.jpg
</URL>
<Height Units="pixels">60</Height>
<Width Units="pixels">60</Width>
</SmallImage>
<MediumImage>
<URL>
http://images.amazon.com/images/P/B99999999A.01._SCMZZZZZZZ_.jpg
</URL>
<Height Units="pixels">140</Height>
<Width Units="pixels">140</Width>
</MediumImage>
<LargeImage>
<URL>
http://images.amazon.com/images/P/B99999999A.01._SCLZZZZZZZ_.jpg
</URL>
<Height Units="pixels">500</Height>
<Width Units="pixels">500</Width>
</LargeImage>
</ImageSet>
<ImageSet Category="variant">
<SmallImage>
<URL>
http://images.amazon.com/images/P/B99999999A.01.PT01._SCTHUMBZZZ_.jpg
</URL>
<Height Units="pixels">48</Height>
<Width Units="pixels">60</Width>
</SmallImage>
<MediumImage>
<URL>
http://images.amazon.com/images/P/B99999999A.01.PT01._SCMZZZZZZZ_.jpg
</URL>
<Height Units="pixels">120</Height>
<Width Units="pixels">150</Width>
</MediumImage>
<LargeImage>
<URL>
http://images.amazon.com/images/P/B99999999A.01.PT01._SCLZZZZZZZ_.jpg
</URL>
<Height Units="pixels">400</Height>
<Width Units="pixels">500</Width>
</LargeImage>
</ImageSet>
The Request that Generated the Response (REST)
http://webservices.amazon.com/onca/xml?Service=AWSECommerceService
&AWSAccessKeyId=[Your Access Key ID Here]
&AssociateTag=[Your Associate ID Here]
&Operation=ItemLookup
&ItemId=0239409223
&ResponseGroup=VariationImages