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#152 – Na encruzilhada das terras raras

Como duas empresas australianas desconhecidas estão atropelando passos importantes em processos de licenciamento ambiental para lucrar bilhões com a mineração de terras raras no sul de Minas Gerais.

Caldas e Poços de Caldas, duas cidades do sul de Minas, se tornaram centrais numa das maiores disputas geopolíticas da atualidade. Isso se deve à alta concentração de minerais de terras raras ali. Especialistas chamam a reserva de “unicórnio da mineração”. Ela é tão grande que poderia suprir 20% da demanda mundial.

Os minerais de terras raras hoje estão entre os recursos mais valiosos do mundo por serem essenciais na produção de imãs, componentes básicos de dois itens de extrema importância no mundo atual: motores elétricos – vitais na tentativa global de diminuir o uso de combustíveis fósseis – e armas de guerra.

O Brasil tem a segunda maior reserva de terras raras do mundo, ficando trás só da China, que está numa guerra tarifária com os EUA. Nesse episódio nós fomos a Minas Gerais para acompanhar as movimentações de um grupo de moradores que resolveu se opor aos projetos de mineração nas cidades onde eles vivem.

Mergulhe mais fundo

Da objetividade do risco à subjetividade da sua percepção: dimensões do risco socioambiental no Jardim Kennedy em Poços de Caldas, MG

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Entrevistados do episódio

Daniel Tygel

Mestre em física, ex-vereador e candidato a prefeito de Caldas pelo Partido dos Trabalhadores (PT).

Nathália Francisco

Arquiteta e urbanista. Pesquisadora do Núcleo de Pós Graduação em Arquitetura e Urbanismo da Universidade Federal de Minas Gerais (UFMG).

Mariano Laio de Oliveira

Chefe da Divisão de Minerais Críticos e Estratégicos da Agencia Nacional de Mineração (ANM).

Wagner Fanin

Eletricista e técnico ambiental. Ex-representante do Conselho Gestor da APA Pedra Branca (CONGEAPA) no Conselho Municipal de Desenvolvimento Ambiental (CODEMA) de Caldas.

Ademilson Kariri e Cariusa Kiriri

Lideranças do povo Kiriri em Caldas.

Rogério Correia

Professor e deputado federal de Minas Gerais pelo Partido dos Trabalhadores (PT-MG).

Ficha técnica

Edição: Matheus Marcolino.

Mixagem de som: Vitor Coroa.

Trilha sonora tema: Paulo Gama

Design das capas dos aplicativos e do site: Cláudia Furnari

Direção, roteiro e apresentação: Tomás Chiaverini

 

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Sony a7V “negative online discourse” – why Sony are the new Canon

(Photo credit: John Mak)

The release of the Sony a7v has been met with a wave of negativity, especially now that the supposed ‘standard model’ mid-range camera price has been bumped to nearly $3000 + tax and a lot more in some regions, like in the UK where the USD-converted price works out at an insane $3600 inc. VAT, despite the Japanese yen being at historically low levels versus the British Pound.

The Sony a7v specs are equivalent to the Nikon Z6 Mark III which is over $1000 less expensive and a mint condition used Z8 a little cheaper also, with far better specs in every area – especially in the cinematic-video department.

The Sony-badge premium appears to be a real thing – and it is putting Sony at a disadvantage vs Canon and Nikon. The Canon EOS R6 Mark III is a better spec and also less expensive, for video it is almost a different league of spec altogether with 7K RAW and Open Gate. The price of the a7v also gets close to a used Sony a1 flagship professional body, the full fat stacked sensor of which there is nothing ‘partial’ about, and the Canon Cinema EOS C50 full frame Nikon Zr competitor, which is just £400 more than the a7v!

But as usual online, people tend to want to believe that only one opinion can be true at once.

Quantum camera

In fact the Sony a7v is a prime example of quantum physics.

A superposition of two different opinions, where both can be true at once applies to this camera.

All the negativity has it’s basis in the truth.

And all the positivity and people putting down pre-orders for it are right as well.

And it all depends on the observer.

It is true that the Sony name now demands a premium, more so than ever before – because E-mount is the best mount. Pure and simple. It has been around the longest out of all the full frame mirrorless cameras, benefits from Sigma’s range and the best cheapest full spectrum of Chinese lenses, and it has the best selection of glass all-round, native or otherwise. For those who are ‘locked-in’ to a mount, it doesn’t matter how much Nikon Z undercut Sony on price with a Z8 or Zr if you have to spend $6000 on lenses and go through the pain of using shitty eBay to sell your Sony glass.

At the same time, it is true the spec is closer to the Nikon Z6 Mark III end of the market than $3000, and somewhat a safe release with nothing that special to jump up and down about – but at the same time, it is closer to the flagship a1 series than a standard a7 has ever been, and corporate price gouging is only part of the picture – the Trump tariffs have pumped up prices even in the UK, where the USD price seems to dictate to other countries what they can charge for cameras. Thanks very much America.

And yes, Sony are now the new Canon. They have a captive, locked-in loyal user-base in the millions, who are happy with what’s being offered and don’t see the appeal of switching systems just to get some niche video feature or whatever.

This is what Panasonic is finding out with the S1R II and S1 II which are fantastic cameras with the broadest range of features ever but nobody but a small number of Lumix loyalists cares.

This is the hard truth of the camera industry in 2025, sadly.

The negative chatter about Sony recently, is not just regarding the a7v though. The firmware bootloop problem is a topic that really deserves a negative discourse and yet as usual, the mainstream camera advertorial media is not talking about it.

This is a situation worthy of a class-action lawsuit, where it appears Sony, knowing there was a software issue with recent firmware updates across all their top models – rather than come clean and do a recall programme, chose to charge people out of warranty to swap out perfectly fine hardware like sensors and mainboards at the cost of thousands of dollars claiming it was the fix.

Thousands of Sony cameras are mysteriously failing, but Sony isn’t telling

But as my adventure with the bootloopy a7 IV shows, the mere act of updating the firmware again (for example from 5.0 to 5.1) completely cured the issue, and that it was likely due to some corrupt software settings, because of bad programming by Sony’s firmware engineers in Japan.

For this, Sony definitely deserves the negativity.

For the Sony a7v, not so much. It’s a perfectly fine camera, even if it doesn’t set the Earth on fire.

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