review

Adonit Pro 4 Disc Tip Touch Screen Stylus

Wednesday, May 29, 2019

It is not secret that one of the most popular stylus out there you can currently get is the Apple Pencil; however, it only works with the iPad Pro and costs a small fortune. For those on a budget looking for a more sensible price point should consider a universal tip stylus like the Adonit Pro 4 which works on any device that has a capacitive touchscreen, including Android and iOS devices.
The Adonit Pro 4 disc tip is extremely responsive so it works great for scrolling on your phone screen without leaving fingerprint smudges on the glass. The disc tip provides good precision and because the disc is clear you can see through onto the screen, making it more precise than, say, a fabric tip, conductive rubber tip or conductive foam tip.
The Adonit Pro 4 has a 9.25mm diameter and measures 12.4cm long and weighs 22 grams. The body of the Pro 4 is made of aluminum while the cap is made of acetal plastic and copper so the cap has a nice metal weight to it. The cap screws on the front of the stylus, as well as the back so you won't lose the cap when using the stylus.
The polycarbonate (PC) plastic disc tip of the Adonit Pro 4 is coated with ITO (Indium Tin Oxide) which is the same transparent conducting liquid/film used in the making of LCD/OLED glass screens because of its excellent electrical conductivity. The thin metal bar holding the disc tip is made with stainless steel alloy of chromium and nickel so it has good corrosion resistance.
The Pro 4 has a similar design to the Pro 3 stylus and even uses the same replacement disc kit as the Pro 3 but the Pro 4 is 22 grams (3 grams heavier) than the Pro 3 so the Pro 4 feels a bit more comfortable to hold with three fingers.
The Adonit Pro 4 is a quality example of a passive stylus that uses a conductive plastic disc tip which has a smaller footprint than the traditional conductive rubber/foam tips you find in many passive styluses. The Adonit Pro 4 tip also has the advantage of not blocking off what you are writing because it uses a clear disc instead of a big rubber tip.
Writing with a pen is always going to be more accurate than writing with a finger; hence active pens are usually better than passive stylus pens and that is because active pens use a ballpoint pen-like tip that mimics the motion of a pen whereas passive styluses mimic a finger.
For general every day use, the Adonit Pro 4 passive stylus is more convenient to use than an active pen because the Pro 4 doesn't require charging nor a digitizer screen so you can use the Adonit Pro 4 with any touch screen, unlike active pens which require some sort of battery power to generate a small electrical field around the much smaller fine tip to mimic the electrical impulse signals from a finger.
If you require a stylus with a smaller tip but don't fancy spending a lot of money in an active pen, it's work considering a bluetooth stylus like the Snap 2 which is a hybrid digital capacitive stylus. The Snap 2 has a smaller tip than the Pro 4 passive stylus and connects to any touchscreen using bluetooth.
If you are going to be doing mostly drawing, an active pen would be the best choice because with the Adonit Pro 4 and other passive capacitive styluses you cannot implement pressure sensitivity nor palm rejection; hence you have to lift your hand from the screen when drawing which isn't ideal. For sketching and jotting down notes, the Pro 4 or the Droid pen would do the job.

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