Each speaker has a five-minute time slot. They provide 15 images of something they are excited, passionate or enthusiastic about and speak for 20 seconds per slide.
"I put the images into an automated slideshow so there's no leeway with time," Lewis said.
"Even though I see all the images before the event, I still sometimes don't know what they're talking about. [For a previous event] Terry Dowdeswell gave me pictures of delphiniums and spoke about cultural diversity."
Lewis was previously involved with similar events, Pecha Kucha and Pic Chat, held in Whanganui in recent years.
"They have come to an end and I've picked up the baton because I love the idea of community fundraising," Lewis said.
Each Small Talks event gives 100 per cent of its income to a charity. In the past, the event has supported the Cancer Society and Women's Refuge Whanganui, with funds from this week's event going to Jigsaw Whanganui. The next event in October will support children's charity Make A Wish. That charity has been chosen because it is supported by real estate company, Bayleys Whanganui.
"We're so grateful to Bayleys," Lewis said.
"We use their hall and they absorb the costs of hiring chairs and audio equipment."
Past events have attracted an audience of 70-80 people and Lewis is hoping for a turnout of 100 this time.
Tickets are available in advance at Bayleys, 158 Wicksteed St, and cost $15. Door sales will be $20. Doors open at 6.30pm on Wednesday and the event starts at 7pm.
Lewis is also organising Smaller Talks, a pop-up event as part of Winter Wonderfest Whanganui.
Smaller Talks is at 6.30pm on Wednesday, August 21, at Space Studio & Gallery. Tickets ($10) are limited to about 30 and are available from Space Studio & Gallery.