Thank you so much, nice, i am going to order that -4 tomorrow. My T4i goes down to -3 which feels almost right, I am sure -4 would cinch it for me. Thanks again!
Just ordered -4 diopter off canon store site. $17 plus tax, free shipping.
To anybody else reading this, free shipping on an order through Canon's store through Feb 5 noon EST. For whatever reason, likely all the anti-tracking addons i have in Firefox, I had to use IE browser to even have the promotion code box show up so i could get that free shipping using that promo code.
"FREE Shipping and Handling on all orders. Use code VAL213. Offer valid January 27, 2013 12:00 a.m. ET through February 5, 2013 12:00 p.m. ET. Offer valid in U.S.A. only, and void where prohibited, taxed or restricted. Availability of certain items may be limited. Limit of ten of any one item per order, subject to availability. Order will be shipped to a street address in the 50 United States or the District of Columbia only. Dealers, distributors and other resellers are not eligible for this offer. Offer subject to Canon Store Terms of Sale. See Shipping and Handling terms for further details and restrictions."