Ugly Hedgehog - Photography Forum
Home Active Topics Newest Pictures Search Login Register
Posts for: wbchinook
Page: <<prev 1 2 3 4 5 6 7 8 9 ... 24 next>>
Feb 23, 2019 02:05:04   #
I googled the statue and found a little info. Here is a link that describes the location and artist

https://totallybuffalo.com/a-sculpture-that-creates-intense-emotion/
Go to
Feb 23, 2019 00:41:22   #
I saw this on face book today. As a father who lost two sons, I was touched by the message portrayed by the statue. I am not sure that I would want the boys mother to see it.


Go to
Feb 19, 2019 10:46:12   #
Thank you for posting this John. An old dog like me can still learn a thing or two. I am going to see if I can change these setting on my Panasonic G9.
Go to
Feb 12, 2019 13:43:14   #
A Canada goose with a bad wing has survived for a half dozen years in our marina. The bald eagles sit in a tree above and never bother it.
Go to
Jan 26, 2019 00:30:09   #
Love it.
Go to
Jan 24, 2019 02:07:26   #
Very very good.
Go to
Jan 23, 2019 19:17:45   #
I might be the only one to capture a half dozen meteors hitting the moon at the same time. This would explain the bright spots on my photo. LOL


JimH123 wrote:
Burning is not the correct word. The meteor strikes the moon at a very high velocity. The sudden impact releases a lot of kinetic energy which affects the meteor and the moon rock to melt and some to vaporize. Plus some to be scattered. The amount of released energy can be huge depending upon speed and mass.
Go to
Jan 23, 2019 15:13:30   #
WOW. A lot of information to warp my old head around. I really appreciate the time and effort you have taken to inform me.

I am not anywhere near being an expert when it comes to Post Processing. For years I played with PSE. PSE 15 is my last version. I have had the LR- PS subscription for a couple of years. I made an effort to get my thousands of photos organized in the LR catalog, but have since given up. I have used PS for a few edits but find myself falling back to PSE usually. I, like many others, hope that Luminar will be enough to let us drop our Adobe subscriptions.

I wish I had taken time to take a few of these moon pictures using the basic 200 ISO setting. It would have been very interesting to see what results you would have found.

I am the photographer for our local chapter of the Power and Sail Squadron. I document their monthly dinner meetings which are usually held in badly lit rooms. I have never noticed any of these rebel pixels while working on these types of photos. I will have to look a little closer. I resize these pictures for viewing on their web site, so a stray pixel would not be too noticeable.

I sold my Nikon D810 and D600 and jumped into the Micro 4/3rd world. The G9 has been fun to own. After a year I find myself still learning and relearning systems. Just the night of the moon shots, I again found myself trying to remember how to pair the camera to my phone.

Once again I want to thank you. You have been more than kind taking time to share your knowledge with me.

Wayne
PS I like what you did with image #5




JimH123 wrote:
I didn't see them either. (At least not yet.) I looked at the RAW files using Freestone Image Viewer since I had seen last night that it doesn't remove hot pixels. But there were none. Then I loaded the images in Lightroom and watched very closely as I clicked on one of the images to cause it to open, looking for that short moment in time that LR is displaying the original before applying its default set of conditions. Again, there were none.

But then I loaded the 1st RAW directly into Topaz Studio and magnified it. And there they were. See image 1. You have to look closely, but they are there. Some are red, some are green and some are blue. But they are there.

Image #2, I let Topaz AI Clear take care of the noise and do some sharpening. They are still there, but the noise is gone.

Next, I loaded the 1st RAW directly into DxO Photolab 2. For a moment I saw the dead pixels, and then they went away as DxO found them and took care of them. I was able to momentarily see then again as I changed the exposure level, but they immediately went away. After increasing prime noise removal, they were permanently gone. See image #3.

Decided to go back to Lightroom and to crank up the exposure. The only thing done to this image is increased exposure. I don't see the hot pixels. But I do see plenty of noise. See image #4.

Then, worked on correcting the noise in Lightroom. See image #5. (Sorry it is out of sequence -- I forgot to load it until the later images were already loaded)

Finally, I discovered that I had purchased Luminar 2018 and I loaded the image. See image #6 and #7

So what are we to make of this:

1. Luminar does not automatically attack hot pixels. I haven't dug through the manual adjustments to see if there is a way to do it manually.

2. There is a lot of noise. But I also see similar noise when using my 2 Olympus bodies -- EM5ii and EM1. I think that this is just something that has to be lived with when using m4/3. For comparison, I am loading an image from Oct 8, 2014 which is the last eclipse I was able to see due to clouds. This is the unedited image loaded in Faststone Image Viewer. See image #8 (There is a faint star a little above and a bit to the left. It is a star and not a hot pixel.)
I didn't see them either. (At least not yet.) I ... (show quote)
Go to
Jan 23, 2019 01:13:57   #
Here is the link. There should be about a half dozen pictures to play with.

https://apc01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwe.tl%2Ft-VTfUMER928&data=02%7C01%7C%7C751c2751dd3c424f386c08d680f98982%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636838206570173045&sdata=b0hyCAUNnMl%2F1bOXm6p2UUELrUZoWQVQ0PTKGNFcL64%3D&reserved=0

JimH123 wrote:
Can you send me the RAW files? One way is to use wetransfer.com which allows you to send up to 2GB free at a time. Best way to do it is to send it to yourself and then when it emails you a link, to copy and paste that link into the reply. The link remains good for one week.

I do not know if Luminar removes hot pixels. I hope it does. I want to see if Lightroom or DxO deals with it. I also am curious about the band of affected pixels surrounding the main hot pixel. I also have other SW that I could try.

An exposure of 1/10 sec is not likely to generate enough heating to generate hot pixels. Look in the manual for your camera if it provides a way to remap hot pixels. The lens cap can remain on for this operation. It is going to take a long exposure (not sure their definition of long) and then find the hot pixels. It will then later ignore those pixels so that you don't see them again. It is not uncommon to see hot pixels. On my Olympus bodies, I see many with a 30 sec exposure. On my Sony bodies, I see none, even after 30 sec. But it is possible that Sony is finding the hot pixels before the file is saved and removing them. I don't have any knowledge of how they are really doing it.
Can you send me the RAW files? One way is to use ... (show quote)
Go to
Jan 23, 2019 00:01:58   #
Hello Jim

Thank you for you detailed response. I shoot in RAW and JPEG. I converted the RAW file with Luminar 2018.You note that the length of the exposure makes a difference. Would a 1/10 second exposure be considered long enough to affect the pixels?

I know Panasonic made some changes to the sensors in the G9 compared to their previous cameras. I will have to do some research on hot pixel mapping in my camera.

I have Lightroom and didn't know about the pixel mapping feature.

Thank you again for giving me so much of your time. I hope I nor too old to comprehend all of this electronic information.

Wayne.






JimH123 wrote:
These are hot pixels. On the left size is a common look to them when I zoom way in. The one to the right is fainter and does not have the border of extra pixels.

Did you shoot this in RAW or in JPEG. If in JPEG, I wonder if this is a demosaicing error as the RAW data is turned into a JPEG. If shot in RAW, what SW did you use to turn this into JPEG.

I have several cameras that can do a test for hot pixels and to map them such that you won't see them again. Hot pixels tend to start showing up as stuck after some amount of exposure time and the longer the time, the more you get. What I don't understand here is that with a Bayer Martrix, you should see red, blue or green hotpixels,

Some software programs can detect hot pixels and remove them before you actually see them. A couple of them are Lightroom and DxO Photolab. I just did an experiment. I took a 30 sec exposure of the night sky with an Olympus EM5ii camera that had hot pixels. I had red, blue and green hot pixels. By the way, it shows zero hot pixels with shorter exposures. The camera has had the hot pixels mapped. But its internal hot pixel test does not expose for 30 sec. I shot in RAW. If I then try to load in Lightroom, it momentarily displays the embedded JPEG and about a second later, the image changes. During the initial display, I see the hot pixels, and then the image changes and the hot pixels are gone as Lightroom removes them. An exception is when two hot pixels tough each other and those remain.

Then I tried another experiment. I opened the EM5ii RAW in Faststone Image Viewer and the hot pixels remained. Then saved it as a JPEG, and the hot pixels remained.

So back to the question: Did you shoot in RAW? And if your did, what SW did you make the JPEG with? Or did you shoot JPEG in the camera?

One more experiment I tried. I imported your downloaded JPEG into Lightroom. But the hot pixels remained. What I see here is that after the conversion to JPEG, the fixing of hot pixels is gone.

I will wait for your answer.
These are hot pixels. On the left size is a commo... (show quote)
Go to
Jan 22, 2019 19:50:48   #
Hello everyone.
I am posting a cropped picture of the moon. I hope this makes the bright dots more viewable. These dots pop out on my 27" 5K iMac. I am also posting a picture taken with the lens cap on. I upped the exposure in PP to make any bright spots apparent. I used an ISO of 1600 to match the moon picture. I see a few small bright spots on this picture. Three or four of these spots are consistent with another shot I took with the lens on. These spots are probably due to noise and or bad pixels.
I really appreciate all the input from you all.

Thank you
Wayne


(Download)


(Download)
Go to
Jan 21, 2019 22:30:44   #
Thank you everyone. I am going to take a couple of pictures tonight and see if I can find a pattern of bright spots. That would mean some some hot pixels are present. If I find any new information, I will let everyone know.
Go to
Jan 21, 2019 16:06:24   #
Thank you all for your replies. Most must not have downloaded and double clicked on the image. There is one bright spot in front of the moon on the first and several on the second picture. That will obviously eliminate any stars, even the shooting type.

I am inclined to give the prize for the correct answer to Larryepage for suggesting random hot pixels.

Thanks again everyone.
Go to
Jan 21, 2019 14:43:44   #
Thank you for your input. Please download and double click on the second image. There are bright dots on the face of the moon.

flyguy wrote:
I think that the small bright dots are stars and came to that conclusion after viewing an enlarged downloaded image.

If you are referring to the area around the edges of the image I would think that would be fringing caused by your lens.
Go to
Jan 21, 2019 14:29:04   #
Thank you IDguy. You may be exactly right. There was a very bright streetlight on my RH side. Although I did have the lens hood extended, the low angle of the light may be the culprit.
Go to
Page: <<prev 1 2 3 4 5 6 7 8 9 ... 24 next>>
UglyHedgehog.com - Forum
Copyright 2011-2024 Ugly Hedgehog, Inc.