Field test : Nikon 300 AFS f4 with and without extender (David)

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Field test : Nikon 300 AFS f4 with and without extender

Hi,

I wanted to make a comparison with this short test.

Nikon 300 AFS f4 with and without kendo x1.4 extender to answer this : more focal (40%) but half light?

I have chosen M8 and M20 for the field test.

Data :

- nikon 300 at f4, A7s, 32x30 sec, ISO 3200.

- nikon 300 +/- x1.4 extender at f4 (eq 420 mm at f5.6), A7s, 32x30 sec, ISO 3200.

No DOF.

Very basic processing with pixinsight (background equalization, color calibration, little curve adjustment, that's all).

There is still some vigneting with the 1.4 extender, but it can be corrected with flats I guess.

With the extender, there is also more chromatic aberration, but is still good.

The IQ is good in both picture.

I will make more complete test with art least 2 hours integration for both.

The tests were made while the moon was rising.

It was also the occasion to test my new IDASLPS D1 clip filter, very good!

B

Description: Nikon 300 alone

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C

Description: Nikon 300 with x1.4 extender

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D

Description: 100% crop center comparison

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E

Description: 100% crop medium comparison

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F

Description: 100% crop corner comparison

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Field test : Nikon 300 AFS f4 with and without extender

Field test : Nikon 300 AFS f4 with and without extender

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Field test : Nikon 300 AFS f4 with and without extender

Field test : Nikon 300 AFS f4 with and without extender

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