Choosing a flash for your lighting studio often comes down to a trade-off between automatic convenience and manual control. Do you want TTL to handle exposure, or are you okay with dialing in power yourself? Do you need built-in wireless triggering, or is a separate trigger fine? The Yongnuo YN560 IV Speedlite Manual Flash 2.4GHz Wireless Camera Flash is a manual speedlite that tries to answer those questions with a built-in wireless transmitter and receiver, and it's listed at USD 29.99 as a pre-owned unit.
Quick verdict: If manual exposure is your workflow and you want a wireless speedlite you can trigger from a distance, the YN560 IV is a practical choice. You get adjustable power from 1/1 to 1/128, a zoom range that follows your lens, and a flash head that bounces and swivels. No TTL, but no need to pay for it either.
Who it suits: This flash is for photographers who already work in manual mode or are ready to learn. It works well as a remote light in a lighting studio setup because of its built-in 2.4GHz wireless receiver, and it can also act as a transmitter for other flashes. The used condition keeps the entry cost low, making it an easy way to add a second or third light to your kit. If you need TTL auto exposure, this isn't the flash for you.
What stands out: The built-in 2.4GHz wireless transmitter and receiver are the standout features. You can use the flash as a wireless transmitter or as a receiver in a multi-flash setup. The manual power adjustment goes from 1/1 to 1/128, giving you a wide range for different lighting scenarios. The zoom range adjusts to match the focal length, and the bounce/swivel head lets you direct light where you need it. The unit has been tested with AA batteries: it powers on, the LCD screen and buttons respond, and the pilot indicator illuminates. It's pre-owned with normal cosmetic wear, but the core functions are confirmed.
Meaningful trade-offs: Manual-only control is the biggest limitation. There is no TTL automatic exposure, so you'll set power levels by hand. The unit is used, so expect cosmetic signs of previous use. You'll need to supply four AA batteries, as they aren't included. And while the wireless transmitter/receiver is built in, you'll want to think about how you'll trigger the flash from your camera if you're using it as a remote unit.
Bottom line: The Yongnuo YN560 IV Manual Flash is a solid option for a lighting studio that relies on manual flash control. At USD 29.99, you're getting a tested, used speedlite with wireless transmitter/receiver functionality and flexible manual controls. If manual exposure fits your style, this is worth considering. If you want TTL or a new-in-box product, you'll likely be better served elsewhere.
Yongnuo YN560 IV Speedlite Manual Flash 2.4GHz Wireless Camera Flash
This is a manual flash with a built-in 2.4GHz wireless transmitter and receiver. It offers power adjustment from full 1/1 to 1/128, a zoom range that adjusts, and a bounce/swivel flash head. The unit is pre-owned and has been tested with AA batteries for basic operation. The LCD screen, buttons, and controls respond, and the pilot indicator illuminates. As a used item at USD 29.99, it's a way to add wireless manual flash capability to a lighting studio setup.
