Unanswered Questions
13
votes
1answer
444 views
At which lux level do the Nikon 1 cameras switch from PDAF to contrast-detection?
The Nikon 1 cameras are famous for being able to track focus with their on sensor PDAF.
But the story goes that if light is low, it will switch to contrast-detect only and will not track focus as ...
9
votes
1answer
133 views
How can I stitch images with the same center but different peripheral content?
Looking for help in solving this problem. I want to stitch a series of images together. The easiest way to describe it is, let's say, I am walking down a long street with a repeating pattern of ...
8
votes
2answers
206 views
Time-varying artifacts in long exposure: is it the sensor?
I have just made my first attempt to photograph the International Space Station, and I clearly need to improve my technique. Here are the details:
Body: Canon EOS-M (1)
Lens: EF-M 55-200mm at 200m, f/...
7
votes
1answer
181 views
Hardware calibration for Eizo Monitor on Linux / Ubuntu without ColorNavigator?
I have a monitor that supports hardware calibration (Eizo CG223w). Eizo offers a tool called ColorNavigator to get the calibration done. Unfortunately ColorNavigator does not support Linux and I'm ...
7
votes
0answers
135 views
What is the meaning of the distance parameter for line control points?
After fine-tuning control points in Hugin, the distance parameter indicates the correlation of two control points in different images, and is a value between 0 and 1. However, line control points (...
6
votes
2answers
187 views
Most efficient way to double-export using Lightroom?
I often want two copies of an image, one optimized for the web, and another optimized for printing.
The current method I have right now is during culling, rating the images. i have Lightroom filter ...
5
votes
0answers
193 views
How does the digikam quality sorter work?
I'm trying to use the digikam quality sorter but I don't know how it works. The documentation I found that most looks like a tutorial is an almost 1-year old unaswered question on the digikam user ...
5
votes
1answer
157 views
Where can I find information on the Pentax Q lenses serial protocol?
I'm searching for detailed information on the Pentax Q lenses (any, but I'm especially interested in the 5-15mm-lens) serial protocol, which controls focus/zoom/aperture.
So far I have found nothing ...
5
votes
1answer
511 views
What might cause horizontal artifacts in Lightroom after import?
I have some old photos on the SD card in my Sony A57. After importing into Lightroom, there are horizontal artifacts on most of the imported photos. This is a screen grab of Lightroom displaying one ...
5
votes
2answers
376 views
What process was used to make this glass plate?
I have an old glass positive photo from about 1850. Does anyone know what process was used? Heliotipy? Puharotipy?
I'm think that the author of the image is Puhar
I have an appointment with the ...
5
votes
0answers
569 views
Photoshop only prints in B&W on Pixma Pro 9000, MK2
One week ago I purchased the Canon Pixma Pro 9000, mk2. Using photoshop, every print I printed, up to today, was breathtakingly beautiful in all sizes. 8x10,11x14,13x19's looked like you could ...
4
votes
0answers
102 views
Where Can I Find Lens Correction Profile Files (for RawTherapee and Other Apps)?
RawTherapee can perform lens corrections provided it has access to the correct Lens Correction Profile (.lcp) file. These files are supposedly distributed with Adobe software, but even after ...
4
votes
1answer
81 views
LR CC and Wacom Bamboo tablet - performance issues
Environment is Lightroom CC (latest version) on Win7Pro x64, 16GB, NVIDIA GTX750Ti.
I use a Bamboo Fun tablet (CTH-661/S), with the most current drivers, which works quite well in general, with one ...
4
votes
0answers
137 views
Why does DeepSkyStacker brighten the stars too much compared to Photoshop?
I've got a 100-ish image stack of the milky way. I always use Photoshop's stacking but sometimes it fails aligning the images or it requires too much swap space (~80GB range) on my primary drive which ...
4
votes
1answer
220 views
Why does my Fujifilm FinePix S1800 have far greater shutter lag in EVF mode than in LCD mode?
The shutter lag on my Fujifilm FinePix S1800 is much longer in EVF mode (just under half a second) than in LCD mode (about 0.15 seconds). What would explain this anomaly?
