Nikon

In 2012 Nikon Inc sent a letter to independent camera repair technicians in the US, notifying them that the company will no longer supply repair parts to anyone except 23 Nikon authorized repair facilities. The move makes it significantly more difficult, time consuming and expensive for photographers to get their Nikon equipment fixed.
Source: iFixit (2012)

UK animal rights campaigners Viva! are calling for a boycott of Nikon for facilitating and promoting the shooting of wild animals with both cameras and guns. Nikon sponsor trophy hunting in the United States and also produce a riflescope specifically designed for killing large wild animals in Africa. However in 2020 Nikon announced it would stop making riflescopes, but didn't give a reason.
Source: Viva (2013)

In 2011 Switzerland's antitrust body fined this company 12.5m Swiss francs ($13.2m) for overpricing its products and breaking import rules. The Competition Commission said that Nikon had obstructed retail import of Nikon products and had exerted pressure on dealers in Switzerland to buy Nikon camera products only via Nikon's Swiss unit allowing Nikon to charge excessive prices for its products in 2008/09.
Source: news article (2011)

This company is a member of the Responsible Minerals Initiative (formerly the Conflict-Free Sourcing Initiative), which helps companies address conflict minerals issues in their supply chains. The RMI provides information on conflict-free smelters and refiners, common tools to gather sourcing information, and forums for exchanging best practices on addressing conflict minerals. Membership is open to companies that use or transact in tantalum, tin, tungsten or gold (3TG). Founded in 2008 by members of the Electronic Industry Citizenship Coalition and the Global e-Sustainability Initiative.
Source: RMI (2019)

This company has sustainability claims on its website, including responding to environmental issues and corporate citizenship activities.
Source: company website (2020)

California, the UK and Australia have all enacted legislation requiring companies operating within their borders to disclose their efforts to eradicate modern slavery from their operations and supply chains. Follow the link to see this company's disclosure statement.
Source: Modern Slavery Registry (2017)

C grade in the Baptist World Aid Australia's Behind the Barcode 'Ethical Electronics Guide 2016', which grades companies on their efforts to mitigate the risks of forced labour, child labour and worker exploitation throughout their supply chains. Assessment criteria fall into four main categories: policies, traceability & transparency, monitoring & training and worker rights.
Source: Baptist World Aid Australia (2016)