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DPChallenge Forums >> Photography Discussion >> Star effect and 300D
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AuthorThread
Olympus OM-D E-M1 Mark II
Olympus 12-40mm f/2.8 Pro
07/08/2004 12:35:44 AM · #1
I like the look of night time shots, so I do it often. I've noticed that when I use the Digital Rebel I get a star effect on the lights without using a star filter. It happens everytime. I think it's pretty cool and I was wondering if anyone else has had the same experience and if you know why this happens.
Here's an example:


On the other hand, here's one taken with my Kodak DX4900


June
Pentax K10D
Pentax DA 18-55mm f/3.5-5.6 AF
 07/08/2004 12:37:23 AM · #2
I usually get it when I use a longer exposure.
Canon EOS-5D
Canon EF 24-105mm f/4.0 L IS
 07/08/2004 12:38:33 AM · #3
I think it's the product of using a very small aperature, like f/16 and smaller.

Typically, the P&S cameras don't go that small.

I have a few examples:

f/14 + 30 secs f/16 + 30 secs

but:
is only f/4.6 and 1/6 sec

Message edited by author 2004-07-08 00:45:21.
Nikon D800
Nikon AF-S Zoom-Nikkor 24-120mm f/3.5-5.6G IF-ED VR
 07/08/2004 12:41:54 AM · #4
That's pretty sweet, I was going to buy a filter to get that effect :/
Canon EOS R5
Canon RF 24-70mm f/2.8 L IS
 07/08/2004 12:41:59 AM · #5
mariomel is correct, the smaller the paerture (larger number) the more pronounced the effect. You can usually see them easily from f/8 on up. The number of points on the star is related to the shape of the aperture, which in turn depends on the shape and number of aperture blades.
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