1. What is Crop Factor?

Crop factor is a numerical value that compares the imaging area of a camera sensor to a full-frame (35mm film) sensor. It affects the field of view and effective focal length of lenses.

2. How Does Full Frame Crop Factor Work?

The full frame crop factor is always:

This means:

• Full frame sensors are the reference standard
• Lenses produce their stated focal length
• No field of view crop occurs

3. Importance of Crop Factor

Details: Understanding crop factor is essential for photographers to predict field of view and effective focal length when using different sensor sizes.

4. Using the Calculator

Tips: This calculator confirms that full frame sensors always have a crop factor of 1. Select "Full Frame" from the dropdown and click calculate.

5. Frequently Asked Questions (FAQ)

Q1: Why is full frame crop factor always 1?
A: Because all other sensor sizes are compared to full frame as the reference standard.

Q2: What's the advantage of full frame sensors?
A: They provide better low-light performance, shallower depth of field, and wider field of view with any given lens.

Q3: Do professional photographers use full frame?
A: Many do, but crop sensor cameras also have advantages like reduced size/weight and extra "reach" for telephoto work.

Q4: How does crop factor affect lens choice?
A: On full frame, lenses perform exactly as their focal length specifies with no crop factor multiplication.

Q5: Is full frame better than crop sensor?
A: It depends on your needs - full frame offers advantages in some situations while crop sensors may be better for others.