Wednesday, December 14, 2022
Adobe Lightroom & Ecosystem
Monday, November 21, 2022
ISO what is it? Why do you care?
Tuesday, November 1, 2022
Lightroom mobile and Adobe ecosystem
Sunday, September 18, 2022
Aperture Priority Usually Fails for Me
Aperture Priority is likely the most popular mode on your camera. But it frequently results in a blurry subject. Oh yes I have image stabilization on my camera. That's not the problem. The background is fine. Its the subject that is blurred. You guessed it, it's Shutter speed being to low.
The theory behind of using Aperture Priority is to set the ISO and the Aperture and the camera will choose the shutter speed to result in a proper exposed photo. There are 2 problems, one is that metering may fool your camera and give an over or under exposed photo. Ok you can use Exposure Compensation to over come that. The is using Auto ISO not setting a minimum ISO to insure a sharp photo. Since I usually shoot with natural light I am subject to changes to light levels. In your camera Auto ISO setting you could set a minimum shutter speed and your camera would automatically boost the ISO to get a proper exposure. That works but what is the minimum Shutter Speed should you set? One stop higher than 1/focal length? So on my 14-150mm which on my 2x crop that means 1/300 sec as a minimum. I would set my auto iso minimum shutter speed 1/600 sec. So my camera would 1/500 or 1/640 seconds.
My choice is to set 1/125 sec when using Aperture Priority. But my real choice is use Manual.
Really it would be a semi-auto setting since I would use Auto ISO. I would choose my Aperture based on DoF and Shutter Speed based on subject. The ISO would float to give you a proper exposure. You can usually set ISO levels. Usually it is best to choose the base ISO for your camera and the upper limit based on your ISO noise tolerance. My OM-D E-M5 iii will not go above ISO 6400 in Auto. I believe this is because OM Solutions/Olympus above 6400 is an extended ISO.
Monday, September 5, 2022
Image Stabilization On or Off?
Should you turn off image stabilization when you camera is mounted to a tripod?
You can find augments for yes or no.
I believe yes if you are talking about the first or second generation of digital cameras. I have found it difficult to find reliable information. I believe that the implementation by a camera manufacture is the real reason for the variance for the belief. Link to Nikon VR this from B & H.
Olympus/ OM Systems provides this and from Robin Wong
For me I always forget to even think about turning off stabilization when I am using a tripod. When I remember to take long exposure photo I'll try to remember to do my own test with my OM-D E-M5 iii.
The best answer is to your own testing on your camera.
From fstoppers
Sunday, September 4, 2022
It's Insane
My camera, using electronic shutter, will go as high as 1/32000 sec. That's insane.
What about rolling shutter? Lets see if I see it.
I choose a shutting position about 1/4 mile from a highway. Manual, Auto ISO, f/5.6, 1/32000 sec, 150mm. No panning and wait for vehicles traveling 50 mph. Single point focus. I tripped the shutter when a truck was in my view. The focus point it happened to be the rear door of the truck.
In Lightroom Classic I set the detail tab to zero the sharpen and luminance values. Edit in Topaz De Noise AI then Topaz Sharpen AI. Back in LR I adjusted the Highlights, Shadows, Whites, blacks and added some Clarity.
When I look at 200% I see some slight distortion but I don't think it is rolling shutter.
Friday, September 2, 2022
Behind the Shot
Tuesday, August 30, 2022
Mechanical and Electronic Shutters
I posted a photo of a Hummingbird and included the meta data. I showed a shutter speed of 1/12800 seconds. I was questioned that I had that high a shutter speed. I mentioned that I was using electronic shutter. I thought that a mirrorless would be able to allow very high shutter speeds. I was told that their mirrorless was limited to 1/8000 sec.
That confused me that so off to Google to get some results."Distortion (also called rolling shutter effect) happens because the camera isn’t able to “scan” the sensor quick enough when fast movements are involved."
Basically the electronic shutter is limited to the camera sensor read time. Some manufactures mirrorless sensors exhibit what is called "rolling shutter". This is where image is skewed, weird. Some reviewers warn about the problem using electronic shutter. Like many things you read you may need to dig a little deeper.
One article, Canon, shows the issues, rolling shutter, in their camera. Another states that Olympus OM-D E-M1 ii and a couple others state that there is little to no rolling shutter.
As you consider purchasing a new Mirrorless camera consider the rolling shutter on your specific brand and model. Not all Mirrorless are equal.
In a follow up post another poster mentioned they could not get the Hummingbird wings that sharp. Of course my comment was raise your shutter speed. Easy to say but knowing the posters camera I went searching again. It turns out that their mirrorless is limited to 1/4000s even with the electronic shutter. Wow, many mechanical shutters are limited to 1/8000s.
The articles are here, Canon, Omsystems/Olympus, Sony and Lumix
Tuesday, August 23, 2022
How Do I Cull +-1200 Photos?
Sunday, August 21, 2022
Social Media Posts
Tuesday, August 9, 2022
Sunday, August 7, 2022
Port extension problems
Over the years I have had problems with external hard drives that I have added to my laptop using port extenders, also called dongles.
Basically the issue is power. An expensive dongle/extender uses power only from the USB port you attach it to. When you add power hungry devices like spinning external hard drives you may have problems with the drive dropping out or corrupting your files. I have had that problem for a couple of years. I thought it was cheap or faulty external drives.
Wrong. Get a powered dongle/extender. I actually have one back in a drawer but haven't used it since I need 115v adapter and cable. Duhh.
How did I come to this knowledge? I watched this from Rocky Mountain Photography School.
Saturday, August 6, 2022
What Shutter Speed?
Thursday, June 16, 2022
I don't always us Manual Mode But when I Do
I don't always us Manual Mode But when I Do I'm usually photographing things with sudden movement potential and I want total control of both the Aperture and Shutter speed. Also I'm usually using Auto ISO for most of my photography since my camera tops out at 6400 in auto ISO which is the native hi ISO. I can manually set my ISO as high as 25600.
The Auto ISO settings on my camera have a "Auto" setting for Shutter Speed, S/S, and I have been unable to learn what "Auto" really means.
To day we were at the Kentucky Train Museum in New Haven. The museum has a nice model train setting and I decided to try a few pictures. I did not bring a flash attachment and my camera does not have a popup flash. So it was native light.
I choose these settings; f/8.0, Aperture Priority and Auto ISO. The photos of stationary items had ISO of 6400 and S/S as low as 1/4 second. The stabilization did a fantastic job but at below of about 1/20s there is motion blur.
Since there are models running I thought I would try to capture a couple. That meant I needed a faster S/S. ISO to the rescue. I went to the top 25600. But the noise the noise. Yep but deal with it. I wanted the shot. Get the shot, "Damn the torpedoes, full speed ahead".
After a couple of test shots I set the focal length to 56mm. In Aperture of f/8.0 the shutter speed was 1/60s. Good but not great. I used Lighroom Classic to set the exposure to where I was satisfied. Then in to Topaz to clean up the noise and sharpness.
f/8.0, 1/60s, ISO 25600, 56mm focal length |
Topaz DeNoise AI + Sharpen AI |
After review I found that the Aperture of f/8.0 was soft on the top and bottom edges. The focus point was in the middle of the frame. Using PhotoPills DoF pill showed that I estimate the DoF with my lens settings to be 2 feet or less. If I had used f/16.0 the S/S would have been 1/30s to maintain the same exposure.
Yes it is still noisy and soft but I got the shot.