Time to be with your loved ones

Time to be with loved ones

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6
votes
1answer
252 views

Why do lenses have different diameters?

Why do lenses (full frame) have different diameters? Does this difference affect the image circle? Whats the significance behind this? For example Nikon AF-S 70-300 has 80mm diameter and Nikon AF-S ...
20
votes
2answers
823 views

Considerations when purchasing a prime lens?

What should I be aware of when buying a prime lens (other than that it will fit my camera)? What specs should I pay close attention to?