The featured images on the pages I want to include in the slide show are a different size than the size I want to use in the slide show. In other words, on the page the size is 240x160 but in the slide show I want to use 630x250. I can adjust the ratios somewhat, but I can't very easily resize the featured image on its page to fit a 630x250 into a 240 wide area. And if I use the 240x160 in the slideshow, it's all stretched out and looks awful.
Is it possible to add options to the shortcode that would use a different image? (i.e. the 630x250 instead of the 240x160) If not, how have others solved this problem (I can't be the only one). Please advise. Many thanks!