Help me understand what's happening here...

Started Jan 2, 2012 | Discussions thread
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tsitalon1
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Help me understand what's happening here...
Jan 2, 2012

Hey guys,

Took some pic of the family dirt bike riding today and while things went ok, the pics seem to lack pop/tonality that I enjoy...

So, I performed a test in my home under high iso and here is something very interesting.

The below shoots were all taken in Manual modewith the below settings:
125, F4, iso 3200
Auto iso OFF
Dlighting Off

Lenses are:

Nikkor 25 1.8
Tamron 28-75 2.8 (non-bim)
Tokina 50-135 2.8

Can someone explain why the Tokina image is so much darker? It obviously captured far less light, but i cannot understand why.

pics are raw and only resized/converted to jpg

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