Last year was a busy one for Hank Bargine, a freelance TV-news cameraman based in Colorado. The networks kept calling as the presidential candidates crisscrossed the country on the campaign trail. Bargine worked and traveled constantly, shooting rallies and other political events.

Now? Things are as slow as Bargine can remember in his 20 years as a news photographer. Bargine estimates heโ€™s worked about 20 percent as much as he did last year. And he has no doubt what, or who, is responsible. โ€œThe Trump factor,โ€ he calls it.

As in: The cable networks, in particular, have devoted so much time and attention to President Trump in his first six months in office that they have little time or interest in covering much else. Cable news has been so packed with Trump โ€” wherever he might be, whateverโ€™s heโ€™s doing โ€” that stories far afield from Washington donโ€™t make the cut.

The current Trump-centric focus is an extension of the 2016 campaign, when the cable networks drew criticism for devoting disproportionate amounts of airtime to Trump, the candidate, at the expense of his political rivals. The networks โ€” addicted to the improved ratings that all things Trump brought their way โ€” seemingly couldnโ€™t help themselves. โ€œThese are very good times for us, and the money is following,โ€ CNN President Jeff Zucker said in February.

If anything, 2017 has been more of the same โ€” much more.

The three leading cable news networks rarely discuss any topic other than Trump during prime-time hours, their highest-rated period of the day. Trump is the focus during daytime hours, too, when cable news actually tends to report some news, rather than merely talking about it.

Over the course of 24 hours on Monday (to take one midsummer day at random), CNN reported and discussed almost nothing else but Trump. A few unrelated topics slipped in โ€” the kidnapping of a British model, a controversial memo written by a Google employee, some news about Syria. But Trump and Trump-related issues dominated, from his declining poll numbers to his Twitter attacks on Sen. Richard Blumenthal, D-Conn., to the latest on the Russia investigation. At 9 p.m., the network ran a special one-hour report: โ€œWhy Trump Won.โ€

And this was all before Trump promised an apocalyptic rain of โ€œfire and furyโ€ on North Korea on Tuesday, a remark that naturally inspired another cycle of discussion and reporting.

The president, of course, is almost always the worldโ€™s leading newsmaker, so itโ€™s no surprise that he commands inordinate attention, both on the air and in other media. And Trumpโ€™s administration has been unusual, to say the least. โ€œWeโ€™re reflecting the biggest story of our lifetime,โ€ said Zucker in an interview on Thursday.

But cableโ€™s reliance on Trump is as much a programming strategy as a reflection of the news of the moment. Zucker acknowledges that the audienceโ€™s response to all the Trump news on cable validates the approach. Only a few years ago, โ€œwriters wrote that cable news was irrelevant, that it was being overtaken by the Internet,โ€ he said. โ€œThe fact is, cable news has never been more relevant or more successful than it has been for the last two years.โ€

In fact, Trump has driven the cable news networks to the highest audience totals in their history, exceeding even last yearโ€™s campaign, which was the highest-rated ever. This is especially noteworthy because cable ratings are cyclical, and tend to decline after an election year.

So far in 2017, Fox Newsโ€™s average audience has increased 18 percent, to 1.54 million viewers per hour, according to Nielsen Media Research. CNN has seen an 8 percent rise, to 784,000, although its prime-time programs have lost 15 percent of their audience compared with this point in 2016 (CNN says prime-time comparisons with last year are skewed by the number of exclusive debates and town halls it aired last year).

The biggest winner has been MSNBC, traditionally cable newsโ€™s No. 3, but now second (849,000) after a 55 percent surge this year. MSNBCโ€™s leading personality, Rachel Maddow, has become the most-watched figure on cable news thanks largely to her nightly critiques of the president and his administration.

โ€œWe try to squeeze in major stories that need to be told,โ€ MSNBC President Phil Griffin said Thursday, โ€œbut there is one story that is dominating.โ€ Besides, he adds, โ€œWe donโ€™t want to do 20 stories with drive-by reporting. (Cable news) is much better when it picks a few and goes deep, looking at it from all sides.โ€

The good news for cable news isnโ€™t shared by people like Bargine, who rely on field assignments from a variety of news networks. Those assignments began drying up after Trumpโ€™s inauguration, he said, as his clients shifted to covering the White House almost full-time. โ€œThere was one major story that consumed the networks from that day on: Trump,โ€ he said. He added, โ€œMy phone stopped ringing.โ€

Bargine gets an amen from Gil Miller-Muro, who owns a business providing mobile satellite uplinks to news stations for live reports from distant locations. โ€œThe Trump effect,โ€ he says, has hurt people in his field because many broadcast and cable news stories now originate from within locations that are already prewired โ€” the White House, Capitol Hill, the Justice Department and the Pentagon โ€” reducing the need an uplink truck, he says.

โ€œEvery network is filled with hungry, creative journalists who want to dive in to different stories โ€” about race, the economy, Wall Street,โ€ he said. โ€œBut the things they get to cover are fewer and far between nowโ€ because of Trumpโ€™s dominance of the news agenda.

For Miller-Muro, the Trump effect is personal. Business has been so erratic this year that heโ€™s decided to wind his down. Later this month, heโ€™ll start a new management position at WRC, the NBC-owned station in Washington, D.C.