Ugly Hedgehog - Photography Forum
Home Active Topics Newest Pictures Search Login Register
Photo Analysis
Background Streaks
Page <prev 2 of 3 next>
Jul 28, 2020 23:04:26   #
Grahame Loc: Fiji
 
Rickhstudio wrote:
Here is the kind of background I would rather have.


Were those taken with the same lens?

The reason I ask is that I can see similar streaking here on the OOF 'closer' areas, but none on the OOF areas that are obviously much further away.

Reply
Jul 28, 2020 23:21:56   #
Rickhstudio Loc: San Antonio, TX
 
Yes, same lens. Tiffen UV filter. I’ll take some tomorrow without. I don’t have as many bird possibilities here but I’ll try.

Reply
Jul 29, 2020 04:46:37   #
Wallen
 
Rickhstudio wrote:
I have a problem that I hope some UHHer can help with. These pictures have not been modified from the Raw file except some cropping and conversion to jpg. They look the same as the raw files. I took pictures with a Canon 5D Mk4, 100-400 II, Stabilizer on, Stabilizer Mode 1. The Flycatcher was taken with a 1.4 extender III, 1/2500 sec, f8, iso2500 at 560mm. The quail was taken without the extender 1/250 sec, f5.6, iso 400, 400mm.
There has been no sharpening, denoise or any other modification. In the background of both pictures, there is streaking around some of the light portions of the background. This is a problem I hope I can correct. This is in the background of many other shots, all different f stops, shutter speeds and isos. Any idea what is causing it? The contest I am going to participate in starting in January requires at least an 18MB tif file with no upsizing and allows nothing besides global file modification. No masks, blurring, cloning, etc. I hope to have this streaking taken care of before the contest begins. Any valid suggestions will be appreciated- or any suggestions of tests I can run.
I have a problem that I hope some UHHer can help w... (show quote)


It is the bokeh on the bright strips of grass(branches too). You need a lower f-stop to diffuse it more and not get the stripped effect. Making sure that the background is further away from your subject can also help as well as finding a background that has no highlight.

As an interim solution to your present photos, if you have Photoshop, you can make two layers, blur the bottom background and using the mask tool adjust the top layer so you show the blurred background on areas of your choice.

Like the sample below:





Reply
 
 
Jul 29, 2020 08:21:38   #
Bayou
 
I think it's just an unfortunate bokeh issue. When a busy background is that close to the subject, it's not possible to get the background far enough out of focus to be as smooth as you'd like.

When faced with a close background, I tend to do the opposite, shoot to get the background well in focus to avoid ugly bokeh, and maybe darken and unsharpen said background in post processing to bring out the subject.

Reply
Jul 29, 2020 08:34:17   #
Electric Gnome Loc: Norwich UK
 
Bayou wrote:
I think it's just an unfortunate bokeh issue. When a busy background is that close to the subject, it's not possible to get the background far enough out of focus to be as smooth as you'd like.

When faced with a close background, I tend to do the opposite, shoot to get the background well in focus to avoid ugly bokeh, and maybe darken and unsharpen said background in post processing to bring out the subject.


I sometimes get the same, most annoying.

Reply
Jul 29, 2020 09:03:52   #
Rickhstudio Loc: San Antonio, TX
 
[quote=Wallen]It is the bokeh on the bright strips of grass(branches too). You need a lower f-stop to diffuse it more and not get the stripped effect. Making sure that the background is further away from your subject can also help as well as finding a background that has no highlight.

As an interim solution to your present photos, if you have Photoshop, you can make two layers, blur the bottom background and using the mask tool adjust the top layer so you show the blurred background on areas of your choice.

Like the sample below:[/quote

That would be a great fix unfortunately the rules of the contest I will be once again entering forbid doing so. And without getting a new lens, I can go to no lower fstop at full extension. 100-400 II- at 400mm f5.6 and with 1.4 extender 560mm f8. These are limitations money and the contest have imposed on me.
I have to solve my problem photographically not in processing. I just wanted to find a reason for the streaks in the first place.

Reply
Jul 29, 2020 09:07:48   #
Linda From Maine Loc: Yakima, Washington
 
Rickhstudio wrote:
Yes, same lens. Tiffen UV filter. I’ll take some tomorrow without. I don’t have as many bird possibilities here but I’ll try.
I forgot about filters! The dpreview article provided by Grahame on page 1 of this topic shows excellent examples of the streaks (not the "normal" bokeh) and addresses filters.

Looks like that's the ticket!

Reply
 
 
Jul 29, 2020 09:12:49   #
Rickhstudio Loc: San Antonio, TX
 
Yes, the UV filter has been on that lens for so long I forgot it was there.

Reply
Jul 29, 2020 09:16:14   #
Linda From Maine Loc: Yakima, Washington
 
Rickhstudio wrote:
Yes, the UV filter has been on that lens for so long I forgot it was there.
Hopefully, your next topic to UHH won't be "Help with Stuck Filter" Though there are several excellent suggestions in the last topic on that subject...

Reply
Jul 29, 2020 09:39:08   #
Rickhstudio Loc: San Antonio, TX
 
Linda From Maine wrote:
Hopefully, your next topic to UHH won't be "Help with Stuck Filter" Though there are several excellent suggestions in the last topic on that subject...


I took it off last night. then put it back on.

Reply
Jul 29, 2020 09:59:48   #
jcryan Loc: Las Terrenas, Dominican Republic
 
I noticed in the Exif data that both of these were taken next year. Perhaps it tachyons messing with the time space continuum ;-)

Reply
 
 
Jul 29, 2020 10:26:33   #
Rickhstudio Loc: San Antonio, TX
 
Exactly! Us old fogies don’t know how to use this new-fangled technology! And really, I forgot what year it was...must be the COVID quarantine messing with what little is left of my mind. What day is this...and what’s my name?

Reply
Jul 29, 2020 11:51:21   #
Rickhstudio Loc: San Antonio, TX
 
I’m going out in the boonies at the lease tomorrow morning with no internet, spotty phone service. I’m going to shoot with no filter and try to duplicate the conditions where I got the streaking. If it disappears...problem solved. Back Monday. I’ll let you know what happens. Thanks for all your suggestions and comments.

Reply
Jul 29, 2020 14:04:01   #
Flying Three Loc: Berthoud, CO
 
Shallow DOF and light refraction on the various leafy textures in the unfocused background. Shoot with more DOF or in less harsh lighting situations.should help.

Reply
Jul 29, 2020 15:00:04   #
cambriaman Loc: Central CA Coast
 
Filters are mentioned. Is it possible that reflections off the several surfaces in the light path produce the effect? Just a theoretical question.

Reply
Page <prev 2 of 3 next>
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.
Photo Analysis
UglyHedgehog.com - Forum
Copyright 2011-2021 Ugly Hedgehog, Inc.