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Forum: Pentax Full Frame 10-30-2017, 07:17 PM  
Thought FF (k1) would give me. Significant increase in light gathering vs k70
Posted By CarlJF
Replies: 31
Views: 5,190
I don't know why, but recently we see on PF and other forums this misconception that the rules of exposure work differently on FF camera.

In the situation you describe, a K1 will allow you to use a faster speed by increasing the ISO about a stop more than the K-70 will allow you. So it's somewhat true that a FF allow you to use a fadter SS, but not because it's lens gather more light.
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