Canon EF 50mm f1.8 II
|Field of view (Canon 350D)
||25 degrees horizontal
16 degrees vertical
|Sampling: (Canon 350D)
||26.5 arcseconds per pixel
|Best f-stops for astrophotography
||f/4 very good in the centre
f/6.3 very good for the entire field
- This is a fast, cheap lens. Although cheap and very lightweight it is a
powerful tool for wide-field astrophotography. It is known as the Plastic Fantastic
(or Nifty Fifty) for a reason.
- The lens used in combination with an APS format Canon DSLR is suitable for
wide-field targets up to 25 degrees wide.
- Wide-open, at f/1.8, it exhibits noticeable aberration in the center of
field. However, by stopping down the aperture to f2.8 there is major improvement.
I shoot this lens at f4 when I'm not too fussed about round stars. When I
want round stars across the field I'll stop it down to f/6.3. Works good for me.
- Automatic focusing will not work at night time on stars. Focus the lens
during the day and mark the focus barrel so you can check the focus quickly at night time.
- I've used the 50mm lens to take lots of images (see examples below) and I can say
that this lens is excellent value for money at just US$100.
- Its big brother, the Canon EF 200mm f2.8 L USM II
is also good value for money.
- Canon's Plastic Fantastic - The Nifty Fifty
The Canon EF 50mm f1.8 II at around US$100.00 is great value for
The sticky tape holds a slip of ruled paper and the focuser grip is marked
with a red ' V ' which lets me focus to infinity quickly at night in the darkness.