I hope the Japan price hikes will not translate into further hikes abroad as we just received hikes in February though given that Canon is a Japanese company, everything would be based off of the Yen. These hikes are definitely not due to inflation as Japan has minimal inflation at best vs US' currently high inflationary index. I do understand that parts and logistics have become more costly but if you look at the recently announced 800mm and 1200mm with their already sky high pricing and negative reception and now add news of a general 10% price hike to the mix, it would just seem ill timed at best from a PR perspective.
Your chart shows inflation but inflation figures are based on a basket of goods and services. You could say that CPI is related to WPI but that is not always the case. Japan CPI represents:
Food (25 percent of total weight)
Housing (21 percent).
Transportation and communications accounts for 14 percent;
Culture and recreation for 11.5 percent;
Fuel, light and water charges for 7 percent;
Medical care for 4.3 percent;
Clothes and footwear for 4 percent.
What we really need to look at is wage rate increases. Major Japanese companies and labour unions agreed on wage hikes of 2.18% in 2019, 2% in 2020 and 1.86% in 2021. Kishida san is urging companies to raise rates to be 3% or more in 2022 to "restart new capitalism".
I think that you need to align what the labour vs component pricing would be within cameras and lenses. Lenses (particularly big glass) would have more labour cost but local Japanese assembly cost would be relatively small vs component cost. Shipping costs have gone up for sure but as a %?
SW costs is all labour and clearly that is an increasing % of the total cost but we don't know whether Canon are using local or external labour (eg India etc) for it. Wage rate increases may be low in Japan but higher elsewhere.
SG&A admin costs will be in Yen but sales/marketing costs will be spread around the world