220-1101 Question 187
Single answerPixel densityA graphic designer is choosing between two 27-inch monitors for detailed photo editing. One monitor has a native resolution of 1920x1080, and the other has a native resolution of 3840x2160. Both use the same panel technology and have similar color accuracy. Which monitor would provide the sharper image, and why?
- A
The 1920x1080 monitor, because lower resolution on the same screen size makes icons and images appear more detailed
- B
The 3840x2160 monitor, because it has a higher pixel density on the same screen size, resulting in a sharper image
- C
The 1920x1080 monitor, because fewer pixels reduce scaling artifacts and increase clarity
- D
Both monitors will appear equally sharp because sharpness depends only on panel technology, not resolution
Show answer and explanation
Correct answer: B
Explanation
The key concept is pixel density: when two displays have the same physical size, the one with the higher native resolution has more pixels per inch and therefore appears sharper. In this scenario, 3840x2160 on a 27-inch display provides much higher pixel density than 1920x1080 on a 27-inch display. This is why 4K displays of the same size are often preferred for detailed tasks such as photo editing, CAD, and reading fine text. In CompTIA A+ Core 1 context, candidates should understand that pixel density affects image clarity independently of factors like panel type or color accuracy. This aligns with standard display best practices and manufacturer specifications, which commonly list screen size and native resolution as the primary inputs used to evaluate sharpness.
- A. Incorrect.
Incorrect. On the same physical screen size, a lower resolution means fewer pixels are spread across the panel. That results in lower pixel density, so fine details and edges appear less sharp. Some users may confuse larger on-screen elements with better detail, but those are not the same.
- B. Correct.
Correct. Pixel density refers to how many pixels are packed into a given screen area, commonly expressed as pixels per inch (PPI). With the same 27-inch size, a 3840x2160 display packs significantly more pixels into the same space than a 1920x1080 display. This increases sharpness and makes text and images appear more detailed, which is especially beneficial for photo editing and other precision visual work.
- C. Incorrect.
Incorrect. While display scaling can affect how large interface elements appear, it does not make a lower-resolution display sharper at the same size. A 1920x1080 monitor may make text and icons appear larger without scaling, but it still has lower pixel density than a 3840x2160 monitor and therefore less detail.
- D. Incorrect.
Incorrect. Panel technology can affect color reproduction, contrast, viewing angles, and response characteristics, but perceived sharpness at the same screen size is strongly influenced by native resolution and resulting pixel density. Two monitors with the same panel type can still differ noticeably in sharpness if their resolutions differ.