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DPChallenge Forums >> Current Challenge >> Starburst B&W - Thoughts, Questions, Comments ...
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04/16/2021 01:54:11 PM · #1
Let's discuss Starburst B&W here, now, if you like, before we get a bucket of entries already submitted.

You know, the "I think this, or maybe that, or what if Ö". You get the idea. :-)
04/16/2021 02:43:02 PM · #2
I remember I had a spacial "Star effect" filter (a real glass filter, not a Photoshop plugin :)) long time ago. Maybe I can still find it?
04/16/2021 03:12:42 PM · #3
Originally posted by LevT:

I remember I had a spacial "Star effect" filter (a real glass filter, not a Photoshop plugin :)) long time ago. Maybe I can still find it?


Nope. Can't use a star effect filter. That wouldn't be in the spirit of the challenge!!!! ;)
04/16/2021 03:15:27 PM · #4
Originally posted by GolferDDS:

Originally posted by LevT:

I remember I had a spacial "Star effect" filter (a real glass filter, not a Photoshop plugin :)) long time ago. Maybe I can still find it?


Nope. Can't use a star effect filter. That wouldn't be in the spirit of the challenge!!!! ;)
hahaha, you've got me!
04/16/2021 03:33:23 PM · #5
Originally posted by LevT:

I remember I had a spacial "Star effect" filter (a real glass filter, not a Photoshop plugin :)) long time ago. Maybe I can still find it?


The effect of a small aperture is usually more subtle but is stronger with some lenses than others. This was shot without a star filter at a surprisingly wide F/5.6 before I really understood about the star effect. The stars were a lucky accident.

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04/16/2021 03:34:35 PM · #6
Originally posted by LevT:

Originally posted by GolferDDS:

Originally posted by LevT:

I remember I had a spacial "Star effect" filter (a real glass filter, not a Photoshop plugin :)) long time ago. Maybe I can still find it?


Nope. Can't use a star effect filter. That wouldn't be in the spirit of the challenge!!!! ;)
hahaha, you've got me!


The rules strictly say you have to go out and burn the retina of your eye shooting directly into the sun like I did this morning. Luckily I read that the newer cameras have UV filters on the sensors to help protect the camera against direct sunlight. Looks like I will be the first blind photographer on DPC.

P.S. Didn't get a shot I liked anyway.
04/16/2021 03:43:33 PM · #7
Originally posted by GolferDDS:

The rules strictly say you have to go out and burn the retina of your eye shooting directly into the sun like I did this morning. Luckily I read that the newer cameras have UV filters on the sensors to help protect the camera against direct sunlight. Looks like I will be the first blind photographer on DPC.

at least you won't be a toothless blind photographer... one would hope. The good thing about EVFs is that you cannot burn your retina by looking at the sun, only your sensor. As long as you keep your second eye closed, that is.

I was never able to get a nice clean star pattern from the sun straight out of the camera... maybe because my lenses are perennially dirty :).

Message edited by author 2021-04-16 15:53:06.
04/16/2021 03:54:57 PM · #8
Originally posted by GolferDDS:

Originally posted by LevT:

Originally posted by GolferDDS:

Originally posted by LevT:

I remember I had a spacial "Star effect" filter (a real glass filter, not a Photoshop plugin :)) long time ago. Maybe I can still find it?


Nope. Can't use a star effect filter. That wouldn't be in the spirit of the challenge!!!! ;)
hahaha, you've got me!


The rules strictly say you have to go out and burn the retina of your eye shooting directly into the sun ...

You don't need the sun at all to obtain a star effect -- you just need a high degree of contrast between a small light-source and the ambient background ...
' . substr('//images.dpchallenge.com/images_challenge/2000-2999/2638/120/Copyrighted_Image_Reuse_Prohibited_1213611.jpg', strrpos('//images.dpchallenge.com/images_challenge/2000-2999/2638/120/Copyrighted_Image_Reuse_Prohibited_1213611.jpg', '/') + 1) . '   ' . substr('//images.dpchallenge.com/images_challenge/2000-2999/2380/120/Copyrighted_Image_Reuse_Prohibited_1190763.jpg', strrpos('//images.dpchallenge.com/images_challenge/2000-2999/2380/120/Copyrighted_Image_Reuse_Prohibited_1190763.jpg', '/') + 1) . '
04/16/2021 04:18:10 PM · #9
Originally posted by LevT:

... maybe because my lenses are perennially dirty :).

Yep. That will cause a problem. :-)
04/16/2021 04:19:23 PM · #10
Originally posted by GeneralE:

... You don't need the sun at all to obtain a star effect -- you just need a high degree of contrast between a small light-source and the ambient background ...
' . substr('//images.dpchallenge.com/images_challenge/2000-2999/2638/120/Copyrighted_Image_Reuse_Prohibited_1213611.jpg', strrpos('//images.dpchallenge.com/images_challenge/2000-2999/2638/120/Copyrighted_Image_Reuse_Prohibited_1213611.jpg', '/') + 1) . '   ' . substr('//images.dpchallenge.com/images_challenge/2000-2999/2380/120/Copyrighted_Image_Reuse_Prohibited_1190763.jpg', strrpos('//images.dpchallenge.com/images_challenge/2000-2999/2380/120/Copyrighted_Image_Reuse_Prohibited_1190763.jpg', '/') + 1) . '

Need a 'Like' button. :-)

F22 is your friend for this challenge.
04/16/2021 04:49:06 PM · #11
My camera says those were taken at f/6 ...
04/16/2021 05:04:52 PM · #12
Originally posted by glad2badad:

Originally posted by GeneralE:

... You don't need the sun at all to obtain a star effect -- you just need a high degree of contrast between a small light-source and the ambient background ...
' . substr('//images.dpchallenge.com/images_challenge/2000-2999/2638/120/Copyrighted_Image_Reuse_Prohibited_1213611.jpg', strrpos('//images.dpchallenge.com/images_challenge/2000-2999/2638/120/Copyrighted_Image_Reuse_Prohibited_1213611.jpg', '/') + 1) . '   ' . substr('//images.dpchallenge.com/images_challenge/2000-2999/2380/120/Copyrighted_Image_Reuse_Prohibited_1190763.jpg', strrpos('//images.dpchallenge.com/images_challenge/2000-2999/2380/120/Copyrighted_Image_Reuse_Prohibited_1190763.jpg', '/') + 1) . '

Need a 'Like' button. :-)

F22 is your friend for this challenge.


Iíll have to get permission to go out at night!
04/16/2021 06:58:58 PM · #13
Originally posted by GeneralE:

My camera says those were taken at f/6 ...

Yeah, but you use a point 'n shoot. Small sensor, short lens. F/stop is the ratio of focal length to the physical size of the aperture, so f/22 on a 200mm lens is a MUCH bigger hole than f/22 on a WA lens. On the small-sensor cams, you start to get star effects under the right conditions usually at f/8 or smaller...
04/16/2021 07:17:12 PM · #14
Well, the "Fnumber" is f/8, but the EXIF also reports the "Aperture Value" as 6 (what I referenced), and the focal length as 6, which is supposed to be the equivalent of 36mm on a full-frame. If you apply the same correction/multiplier as for focal length then those would be effectively f/36 ... not sure that's how the math works though -- maybe the "Fnumber" setting already accounts for any necessary corrections ...
04/22/2021 02:32:10 PM · #15
Originally posted by GolferDDS:

Originally posted by glad2badad:

Originally posted by GeneralE:

... You don't need the sun at all to obtain a star effect -- you just need a high degree of contrast between a small light-source and the ambient background ...
' . substr('//images.dpchallenge.com/images_challenge/2000-2999/2638/120/Copyrighted_Image_Reuse_Prohibited_1213611.jpg', strrpos('//images.dpchallenge.com/images_challenge/2000-2999/2638/120/Copyrighted_Image_Reuse_Prohibited_1213611.jpg', '/') + 1) . '   ' . substr('//images.dpchallenge.com/images_challenge/2000-2999/2380/120/Copyrighted_Image_Reuse_Prohibited_1190763.jpg', strrpos('//images.dpchallenge.com/images_challenge/2000-2999/2380/120/Copyrighted_Image_Reuse_Prohibited_1190763.jpg', '/') + 1) . '

Need a 'Like' button. :-)

F22 is your friend for this challenge.


Iíll have to get permission to go out at night!


My image in the vanishing point challenge showed starburst at F10.

But indeed difficult, still in lockdown and not allowed out on the street after 22:00 hrs.

Minimal editing but still allowed to convert to B&W ?
04/22/2021 02:51:10 PM · #16
Originally posted by willem:

Minimal editing but still allowed to convert to B&W ?

Yes, but only by simply changing the mode to grayscale -- you can't use adjustable methods like Channel Mixer.
04/22/2021 06:22:06 PM · #17
I REALLY dislike the thought of being blind.

Just sayin'...

And... I'm not fond of Minimal challenges.

Just sayin' that, too.

:D

Carry on. Nothing to see here.

Since we are all BLIND now! LOL!

04/22/2021 07:13:51 PM · #18
This challenge does not require shooting the sun -- any "point-source" light with the correct focal-length/aperture/shutter-speed combo should produce this effect.
04/22/2021 11:55:33 PM · #19
Why only B&W?
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