Digital Camera Buyer's Guide: Real Cameras - Comments

In summary, Andy Resnick submitted a new PF Insights post titled "Digital Camera Buyer's Guide: Real Cameras." The post discusses the concept of crop factor, which is the size of the camera sensor relative to the 35mm format. A crop factor of 1.6x means the sensor diagonal length is 26.8 mm. The conversation delves further into this concept, with Andy clarifying that the standard 35mm sensor has a diagonal length of approximately 43mm, and a crop factor of 1.6 means the sensor diagonal is about 27mm. The conversation also raises the question of whether this information would be easily understandable for beginners.
  • #1
Andy Resnick
Science Advisor
Education Advisor
Insights Author
7,417
3,112
Andy Resnick submitted a new PF Insights post

Digital Camera Buyer's Guide: Real Cameras

digitalcamera3.png


Continue reading the Original PF Insights Post.
 
  • Like
Likes Greg Bernhardt
Computer science news on Phys.org
  • #3
Diagonal of standard 35mm sensor (36mm x 24mm) is approx 43mm, so crop factor 1.6 means sensor diagonal about 43mm/1.6 which is about 27mm diagonal.
https://en.wikipedia.org/wiki/Crop_factor
 
  • #4
Jonathan Scott said:
Diagonal of standard 35mm sensor (36mm x 24mm) is approx 43mm, so crop factor 1.6 means sensor diagonal about 43mm/1.6 which is about 27mm diagonal.
https://en.wikipedia.org/wiki/Crop_factor
Ah. Got it. Thank you. I do think that the assumption that this is immediately understandable is a bit of a stretch since the article (which is very good) is for beginners so @Andy Resnick, would a beginner be expected to know that 35mm => 35x24 ?
 
  • #5
phinds said:
Ah. Got it. Thank you. I do think that the assumption that this is immediately understandable is a bit of a stretch since the article (which is very good) is for beginners so @Andy Resnick, would a beginner be expected to know that 35mm => 35x24 ?
36x24, and probably not, but it isn't so important to know these exact dimensions as long as you realize that's what people are using as the reference when they say a certain camera/lens has an equivalent zoom range of 28-200 mm or whatever. They mean the field of view covers the same range as a 28-200 mm lens would on a traditional 35 mm format camera.
 
  • #6
Now we need a smartphone camera buy guide. Google just came out with the Pixel. Supposed to be most advanced smartphone camera.
 

1. What is the difference between a digital camera and a traditional film camera?

A digital camera uses a sensor to capture and store images electronically, while a traditional film camera uses film to capture and store images chemically. This means that digital cameras can store a larger number of images, have instant playback, and do not require the cost of film and developing. However, traditional film cameras may have a higher resolution and can be more forgiving for beginners.

2. What are the most important features to consider when buying a digital camera?

The most important features to consider when buying a digital camera are the sensor size, resolution, lens quality, and shooting modes. The sensor size and resolution determine the overall image quality, while the lens quality affects the sharpness and clarity of the image. The shooting modes, such as manual, automatic, and scene modes, allow for more creative control and flexibility in different shooting situations.

3. What are the advantages of a DSLR camera?

DSLR (Digital Single Lens Reflex) cameras offer several advantages over other types of digital cameras. They have larger sensors and interchangeable lenses, allowing for higher quality images and more control over the composition of the image. They also have faster shutter speeds and better autofocus, making them ideal for capturing action shots. Additionally, DSLRs have a longer battery life and are more durable than other types of digital cameras.

4. Is it worth investing in a camera with 4K video capabilities?

It depends on your specific needs and preferences. 4K video has four times the number of pixels as standard HD video, resulting in higher resolution and more detail in videos. If you plan on shooting a lot of video or want to have the option to shoot in 4K, then investing in a camera with this capability may be worth it. However, if you primarily take photos and rarely shoot video, it may not be necessary to spend the extra money on this feature.

5. What is the difference between optical and digital zoom?

Optical zoom refers to the physical movement of the lens to magnify the image, resulting in high-quality, clear images. Digital zoom, on the other hand, uses software to enlarge the center portion of the image, which can result in a loss of image quality. It is generally recommended to use optical zoom when possible and avoid using digital zoom unless absolutely necessary.

Similar threads

  • Computing and Technology
Replies
14
Views
2K
  • Computing and Technology
Replies
1
Views
2K
  • Computing and Technology
Replies
2
Views
1K
  • Computing and Technology
3
Replies
70
Views
30K
  • Computing and Technology
Replies
2
Views
3K
  • Computing and Technology
Replies
7
Views
3K
Replies
1
Views
956
  • Nuclear Engineering
Replies
6
Views
3K
  • Computing and Technology
Replies
16
Views
3K
Replies
11
Views
3K
Back
Top