Weird/Horrible Flare??

[Peter Dmitriyev]

Can anyone explain this weird horrible flare I've experienced shooting into the sun with 2 different lenses? I've never seen anything like this it almost looks like I'm seeing the sensor array reflection or something. Both of these were taken on 2 different brand new lenses a Rokinon 14mm and Sigma 20mm in nikon mounts.

Any clue what in the heck is this? Since I've never seen this and this was my first time testing these new lenses in the direct sun I would think it's just the lens but how can it happen on BOTH lenses ??

 

[Joseph Coleman]

Its the Reflection of the OLPF.....It is a well known problem that can be fixed by using ND filters and opening up your aperture. I'm guess you shot this around f16 or higher. so stop down to 5.6 and use nd filters to compensate. should get rid of it. this isn't just a red problem either it happens to most digital sensors.

 

[bjonsson]

ohhhh, beautiful. This is the most rare of all visual phenomenons. It's called the "Bitchin' TA flare". Almost unexplainable, but best way to describe it is that is a miriad of angels trumpeting the majesty of the Trans Am in the back ground. You must be living right to have been a witness to that!


Or its that known issue of light double dinging off the OLPF - which affects all digital sensors.

 

[Uli Plank]

f16 isn't the greatest of all apertures anyway – most lenses have their sweet spot around 5.6, some even earlier these days.

 

[Peter Dmitriyev]

thanks yuo guys solved it for me and hit the nail right on the head...I was doing a quick test didn't want to rig up ND's etc so I was at f16 or f22....

just out of curiosity

1. why does only stopped down aperture make this phenomenon occur?
2. why does the OLPF look like a bunch of neatly arranged dots?

 

[Andy White]

There have been quite a few threads - it's the OLPF cover.

http://www.reduser.net/forum/showthread.php?72599-Weird-Red-Dots-Anybody-know-what-this-is

http://reduser.net/forum/showthread.php?65022-Red-circles

Probably more around too!

In terms of why it occurs - more then likely (and IMO), when you're stopped down, you're making a narrow beam of light and not flooding the sensor with light (as you would with it wide open). If you're using ND's, you are reducing the light flow, but keeping a wider aperture - so there's still a wider beam of light coming to the sensor... so this situation doesn't occur as the sensor is being flooded with more light - but, stopped down, you're concentrating less light on the sensor so the dots start to appear. The dots are the pattern on the sensor itself...

The problem is not common to RED - but there are lots of views/opinions etc (as always), but read through the listed threads.

 

[Andre W.]

this I think is an interesting effect to look into as well dealing with digital sensors and bounce back reflections.... it's been posted before in a topic of the same nature as this...

http://thesybersite.com/minolta/sensor-reflection/

 

[Brian Robbins]

You should put the OLPF bushing in if you haven't yet because these cameras have a very annoying sensor flare problem but the bushing helps with that.

Can anyone explain this weird horrible flare I've experienced shooting into the sun with 2 different lenses? I've never seen anything like this it almost looks like I'm seeing the sensor array reflection or something. Both of these were taken on 2 different brand new lenses a Rokinon 14mm and Sigma 20mm in nikon mounts.

Any clue what in the heck is this? Since I've never seen this and this was my first time testing these new lenses in the direct sun I would think it's just the lens but how can it happen on BOTH lenses ??