Lens product images were added to the following review pages, which means they are also available in the Lens Product Image Comparison Tool:
Canon EF-S 18-55mm f/3.5-5.6 IS STM Lens
Samyang 24mm f/1.4 US UMC Lens
Samyang 24mm f/3.5 Tilt-Shift Lens
Sigma 30mm f/1.4 DC HSM Lens
Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM
Tamron 18-270mm f/3.5-6.3 Di II VC PZD Lens