Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »

Activity for Olin Lathrop‭

Type On... Excerpt Status Date
Comment Post #278022 @10Rep: If you really need a particular shutter speed, then shutter priority makes sense. However, I usually keep my camera set to aperture priority. For one-offs where I want a "fast" shutter speed, I just twiddle the aperture dial until I get the desired shutter speed. If I were doing a whole sp...
(more)
over 3 years ago
Edit Post #278022 Initial revision over 3 years ago
Answer A: What are shutter speed, ISO, and Aperture?
Shutter speed, ISO, and f-stop are the three variables you can control in the camera to adjust exposure. Changes in one can be offset by changes in another to keep the same exposure. However, changes in each of these three parameters have different influences on the look of the overall picture, eve...
(more)
over 3 years ago
Comment Post #276862 It was well published what part of the sky the comet would appear at what time. I noticed that the brightness decreased rapidly over the next few nights after this picture was taken. A few days later when there was clear sky again, I couldn't find the comet at all.
(more)
over 3 years ago
Comment Post #277201 @Peter: The reflection is quite close to head on. Note how the reflection of the top candle is below the original, and of the bottom candles above. The head-on angle vertically is about halfway up the big candle. There is a small angle due to the flame being above that, and an even smaller one due...
(more)
over 3 years ago
Edit Post #277413 Initial revision over 3 years ago
Answer A: How to capture a competition rifle shooter with a bullet in flight?
Do the math. Let's say the bullet in question is travelling at about the speed of sound, around 330 m/s. That means it moves 1 meter in 3 ms, or about a foot in 1 ms. Now look at the speed of "prosumer" flashes. 1 ms for the flash duration would not be out of the ordinary, especially for a br...
(more)
over 3 years ago
Edit Post #277201 Post edited:
over 3 years ago
Edit Post #277203 Initial revision over 3 years ago
Answer A: 2020 - August - The Moon
Obligatory shot of just the moon Image Yup, it's the moon. I included this to document the exposure. Getting the moon right is tricky, since it's a small but bright object in the middle of a dark background. Anything with auto-exposure is going to mess this up, unless you have a very long le...
(more)
over 3 years ago
Edit Post #277202 Initial revision over 3 years ago
Answer A: 2020 - August - The Moon
Moon over saguaro Image 16 Aug 2011, in the White Tank Mountains just west of Phoenix Arizona, 300 mm lens, 6:47 local time. The moon was nearly full, and low in the west around dawn. I wanted the moon to look as large as possible relative to the cactus, so a long focal length was needed. ...
(more)
over 3 years ago
Comment Post #277196 Sorry, but I think this is missing the point somewhat. It seems the flames are blurry not because of motion, but because of over-exposure. This is made worse by the small diameter of the cell phone lens causing more diffraction, and more bleed-over due to very tight spacing of sensels on the tiny s...
(more)
over 3 years ago
Edit Post #277201 Initial revision over 3 years ago
Answer A: How do I take crisp pictures of flames at night (with a cell phone)?
The problems The basic problem is that the flames are small bright things in what is otherwise a dark scene. The automatic exposure system then messes up because it strives to make the average come out right. Some exposure systems do look at highlights and adjust somewhat, but in most ordinary...
(more)
over 3 years ago
Comment Post #277043 @Monica: Cell phone cameras have come a long way from the toys they were just a decade ago. However, sky photography usually requires careful manual settings, which are often not available on something dumbed down with low intimidation factor being the highest design criterion. Asking about night s...
(more)
over 3 years ago
Comment Post #275855 This post popped to the top due to an edit by Pnuts. However, I looked at the edit history and the before and after posts look the same. What is going on here?
(more)
almost 4 years ago
Edit Post #276862 Initial revision almost 4 years ago
Answer A: 2020 - July - B&W Horizons
Comet Neowise Groton Massachusetts, 20 July 2020, 22:19. 135 mm, full frame (24 x 36 mm) sensor, 4 seconds.
(more)
almost 4 years ago
Edit Post #276841 Initial revision almost 4 years ago
Answer A: Link to other Community contests?
While there is a point in linking from SE to here, the reverse makes no sense. We want people finding this place from elsewhere. We don't want to help people go elsewhere if they happened to stumble onto this place first. Also, as a general principle, this site needs to stand on its own. If it ...
(more)
almost 4 years ago
Edit Post #276768 Post edited:
almost 4 years ago
Comment Post #276768 @Hueco: It's my own IMAGE_EDIT program. Actually it has two types of brightening/darkening while keeping the ends of the range the same. The log brightening I used is the more general. There is also something that has a stronger effect on the dark end of the range.
(more)
almost 4 years ago
Edit Post #276768 Post edited:
almost 4 years ago
Edit Post #276768 Post edited:
almost 4 years ago
Edit Post #276768 Initial revision almost 4 years ago
Answer A: Critique Request - Landscape - Composition
Here is another totally different derivative of the original: The waterfall and the swirling leaves are really two separate features that happen to be in the same original photograph. Trying to show both in one picture makes the picture confusing by lacking a point, and neither will look good...
(more)
almost 4 years ago
Comment Post #276715 Confirmed in Edge too.
(more)
almost 4 years ago
Edit Post #276546 Post edited:
almost 4 years ago
Edit Post #276577 Initial revision almost 4 years ago
Answer A: 2020 - July - B&W Horizons
Storm over Mesa Verde Image alt text This was taken 16 Aug 2018 from the side of the highway a little west of Mancos Colorado. The storm clouds looked so dramatic that I stopped to take a picture.
(more)
almost 4 years ago
Edit Post #276546 Post edited:
almost 4 years ago
Edit Post #276546 Initial revision almost 4 years ago
Answer A: How can I reduce blurriness when taking a photo in the dark, using only UV light?
Possible problems, with their solutions, are: Inability to focus properly in the dark. Put the camera on a tripod. Focus and compose with the lights on. Depending on the camera, you may have to switch it to manual focus mode. If your camera is too dumbed down to allow that, then it is inappr...
(more)
almost 4 years ago
Edit Post #276445 Initial revision almost 4 years ago
Answer A: Which posts or types of posts to migrate in?
Which posts or types of posts to migrate in? None of them. For this site to be successful, it needs to have activity here. Copying posts from SE only creates the illusion of activity, then becomes worse than useless when people realize after reading the whole question, that it was was asked an...
(more)
almost 4 years ago
Edit Post #276321 Initial revision almost 4 years ago
Answer A: Critique Request - Landscape - Composition
My first response is that a really like this picture. However, there are some details I'd probably change, or at least experiment with. Here is a scaled down original for comparison with subsequent versions: Image alt text The picture looks a little dingy, at least on my monitor. The fir...
(more)
almost 4 years ago
Comment Post #275904 I keep seeing this question and think how I could list 100 different things. Then I realize this question can never be fully answered, and it feels too overwhelming to even start. Perhaps the reason you're not getting any answers is that others go thru a similar thought process.
(more)
almost 4 years ago
Comment Post #275904 This question seems like the poster case of "too broad". I realize you're trying to generate help material, but this might give the wrong idea of what kinds of questions are allowed. That makes me wonder how group-edited help can be created here. SE used to handle this with community wiki, which n...
(more)
almost 4 years ago