Pentax 50mm 1.4 vs 1.7 BOOkeh! difference?

striker_ · 02-01-2012, 03:09 AM

Ive read that the 1.4 have better BOOkeh! than 1.7 but if you stop down to maybe 2.8. Is the 1.4 still better or same?

**boriscleto** · 02-01-2012, 05:52 AM

It's going to be different simply because the 1.7 has 6 blades and the 1.4 has 8.

This was taken with the A50/1.4 @ f/2.8. Notice the upper right corner has a roughly octagonal point of light. With the 1.7 that would have been hexagonal.

In night shots points of light will have 8 points with the 1.4 and 6 points with the 1.7.

striker_ · 02-01-2012, 10:53 AM

Oh i understand. Thanks for the answer.

02-01-2012, 03:09 AM	#1
striker_ Senior Member Join Date: May 2011 Location: Sweden Posts: 158	Pentax 50mm 1.4 vs 1.7 BOOkeh! difference? Ive read that the 1.4 have better BOOkeh! than 1.7 but if you stop down to maybe 2.8. Is the 1.4 still better or same?

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02-01-2012, 05:52 AM	#2
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,473	It's going to be different simply because the 1.7 has 6 blades and the 1.4 has 8. This was taken with the A50/1.4 @ f/2.8. Notice the upper right corner has a roughly octagonal point of light. With the 1.7 that would have been hexagonal. In night shots points of light will have 8 points with the 1.4 and 6 points with the 1.7.

02-01-2012, 10:53 AM	#3
striker_ Senior Member Join Date: May 2011 Location: Sweden Posts: 158 Original Poster	Oh i understand. Thanks for the answer.

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