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Film vs EOS 300D

As an long time film astrophotographer, I'm interested of the newest development in imaging. Therefore, I have decided to test the 2 systems at the time. 

For this test, I have used two of the most used films in astronomy, the Provia 100F and the Provia 400F. I used them for eclipse imaging, but also for imaging large part of the nightly sky.

 

The test :

All pictures were taken on the same day (october 30th 2004) using a FS-60c and a 3x barlow (giving roughly a 1m focal). All the negatives were scanned using a coolscan IV at its highest resolution (2900 dpi)

 

The results :

a) Provia 100F

(original picture reduce to 1/3)

 

Lower left spot (actual scale)

upper right spot (actual scale)

 

b) Provia 400F

(original picture reduce to 1/3)

Lower left spot (actual scale)

upper right spot (actual scale)

 

c) EOS 300D @ 100  Asa

(original picture reduce to 1/3)

Lower left spot (actual scale)

upper right spot (actual scale)

 

 

d) EOS 300D @ 400 Asa

(original picture reduce to 1/3)

Lower left spot (actual scale)

upper right spot (actual scale)

 

Conclusion :

The Provia 100F give a better resolution than the Provia 400F. But the EOS 300D overtake both provia.

After word : Even if the film were scan at 2900 dpi, details shown on the film were not as good as details given by the EOS.