All Questions
0
votes
0answers
29 views
How to remove gray background on gray picture? [migrated]
I have a scan of an old anatomic atlas; it's grayscale and not really bright. I suppose it's a copy of an engraving. My question is: is it possible to remove this background relatively easy? Or magnet ...
1
vote
4answers
42 views
Why do RAW files only show you 8 bit of the 14bit recorded?
Following up from a previous related raw file latitude question. Why do RAW files record in 14 bit but only show 8 bit of data? The remaining data is hidden away to the right or left of the histogram. ...
0
votes
0answers
40 views
Overexposed images when using ring flash
I am somewhat of a newbee to photography, but I have a Sigma EM-140 Ring Flash with a 18-250mm Sigma lens.
In short, when I use the camera with the ring flash I can't get it to take photos that ...
0
votes
1answer
30 views
What is the better Nikon primes among 50mm/1.8G, 50mm/1.8D and 35mm/1.8G for my D3200? [duplicate]
which is a better prime lens for my Nikon D3200? nikor 50mm f 1.8g or nikor 50mm f 1.8D or nikor 35 mm f 1.8G ?? nikor 50mm f 1.8 is much cheaper. Though money is a constraint for me if the other ...
5
votes
4answers
80 views
Black background post processing tips?
This week I've been experimenting with getting some things photographed with a completely black background. Following some tips on this site about background distance etc, I came to the following ...
-1
votes
3answers
134 views
How was this image with red seats on a black and white background created?
What sort of post production process can help achieve this appearance?
http://500px.com/photo/5152024
2
votes
1answer
18 views
Looking for books written from perspective of a magazine photoeditor or art director
Can anyone recommend a book written by a magazine editor, maybe a memoir, describing the interactions while working with professional photographers or photojournalists ?
2
votes
3answers
94 views
How do I take photographs of scientific laser products?
I have been asked to take some product photos of various scientific lasers.
Most of them will just be simple shots of the boxes on a white background but I will also have to do an 'action' shot a bit ...
2
votes
0answers
26 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 ...
0
votes
2answers
45 views
How does focal length chage perspective? [duplicate]
@MichaelClark answered a question I posted about zoom using focal length (emphasis added):
You are correct that a focal length twice as long (2X zoom) as the original one will make objects appear ...
3
votes
2answers
43 views
How Does Focus Differ Above and Below Water?
While I am trying to figure out what I need for split-underwater photography, an interesting fact came to light:
A lens focuses at different distances in air than underwater.
How is the focus ...
0
votes
3answers
65 views
How to get a vintage/dreamy look?
How to get a vintage/dreamy look like this photo?
It has some yellow color cast and seems like extra blur added in post process?
0
votes
0answers
32 views
What is “The One Third's Principle”? [duplicate]
I have heard a lot about "The One Third Rule" in photography.Can anyone explain the one third's rule in brief?
3
votes
4answers
111 views
Can I set my camera to add my name to each picture?
I have a Sony W690 PointAndShoot camera, and I'd like to know if it's possible to add my name to each photo that I take, similar to adding the date on our pics. I have seen pics that have the ...
-3
votes
0answers
25 views
Face Extraction using matlab [closed]
i am working on a project for a local website. i am using matlab for a long time now..but i am new to image processing techniques using matlab.. my aim is to read an image (done), program should ...
6
votes
2answers
117 views
Is vector photography possible?
Of course any bitmap image can be vectorized, but might we ever reach a point where a camera can make an outline image that looks exactly like a photograph? Could the resulting image even be ...
4
votes
1answer
62 views
What Equipment Is Required For Split-Underwater Photography?
How are split-underwater photographs made?
What equipment is needed? Does it exist for various types of cameras?
Bonus for hints on how to use the said equipment.
-1
votes
3answers
90 views
How to increase the size (Kb) of image in photoshop [closed]
I have an image of 20Kb and i want that image size to be 40Kb and
how can we achieve in photoshop..
i have searched on web, what i got the increase the images size ie height and width of images. And ...
1
vote
3answers
62 views
What is the recommended pratice for publishing a photo subject's name in a caption, from public event, with or without release?
Additional question associated to this topic regarding photo releases at a public event ...
What is the recommended practice regarding captions that could include a child's name (minor, under the age ...
1
vote
0answers
22 views
Searching for simple, user friendly software for browsing photos on touch screen monitor
At events I take photos and display them on a multi-touch screen, for people to view and browse. Lightroom is good but I'm looking for a simpler software which allows people to easily scroll through ...
5
votes
2answers
85 views
How large an exposure difference before it's noticable?
I'm being forced to work with a shutter that jitters (e.g., a 1/60 shutter could be anywhere between 1/59 and 1/61). I can't change the hardware, so please don't suggest that. I would if I could.
...
1
vote
2answers
50 views
Lens won't focus except in video mode, and makes a funny noise: what's wrong?
My 18-55mm AF-S Nikkor lens seems to be faulty. It makes a funny noise when it tries to focus and can only focus at a close distance, not at a long distance. The shutter is very sluggish and slow. It ...
0
votes
2answers
87 views
How is zoom measured? [duplicate]
Zoom meaning the ability to make something distant appear closer. Consumer cameras are sold with a maximum zoom which is supposed to define how much closer. For example a camera might be 40x zoom, ...
4
votes
6answers
180 views
How many “MegaPixels” can the human eye see?
There is obviously a limit to what the human body can process, such as frames per second. My question is how many MegaPixels would it take before the human eye can no longer differentiate it from ...
0
votes
2answers
43 views
How to shoot an event in a long living room with a large french window on the shorter side?
I sometimes have to shoot in an enclosed space, a living room that is somewhat similar to the picture below. There generally is a large French window on one side that is streaming in sunlight of late ...
0
votes
1answer
34 views
How to turn off the timer sound on my Nikon D3100?
I need to use the self timer but I would not like it to beep as it counts down. (You know, the long beep and then the short beeps right before it takes the picture.) Is there a way to turn the sound ...
1
vote
1answer
31 views
How to modify Lightroom 4 presets?
I downloaded a few LR4 presets. One of them is adding some vignetting which I do not like. I do not see any vignetting applied in LR4 Develop Module.
Is there a way to remove it?
0
votes
0answers
26 views
How to shoot tethered using CHDK incompatible Canon Powershot S410?
I have an old Canon powershot S410 compact camera, which I want to use for a time-lapse project. For the project I will need to build an intervalometer to automatically shot photos (probably Arduino ...
4
votes
2answers
64 views
Develop Canon Raw images on Mac OSX via command line into mutliple tiffs for pseudo-HDR
What is the best way to convert on the command line a Canon raw file (CR2) into 2 or 3 differently exposed tiffs for HDR/tonmapping?
I would like to use Apple's sips, but couldn't find anything to ...
1
vote
2answers
114 views
How do I choose between 24-70 f/4 and 24-105 f/4 Canon lens?
I am getting a new medium range zoom lens for general use and occasional weddings. This new 24-70 f4 was top of my list until I watched this review:
Canon 24-70 f/4L IS vs Canon 24-105 f/4 IS - ...
5
votes
5answers
411 views
Does Earth's latitude affect the color of light?
I was talking with a friend about what conditions can affect color, gamma and white balance, and how to get in order these variables into the configuration to set up and get a good shot.
Beside the ...
2
votes
2answers
83 views
Does high reflectiveness of digital sensor lead to poor lens performance?
I Googled film vs dslr and found an article from 2007 that said:
Digital sensor has higher reflectiveness than film. The light bouncing back from sensor will cause flare and lead to poor optical ...
2
votes
4answers
112 views
Where does the strange purple/blue glow around the headlight wearing subject's front come from?
I've found that a few of my recent trip photos have this odd artifact/ghosting resulting in a blue/purple glow around the helmet(see below pic):
I've found this question which i think relates to ...
2
votes
1answer
60 views
Recommendations an for entry level studio monolight?
I'm looking for an entry-level studio monolight (two, actually). They range from $150 (Cowboy studio) all the way up to $1000. I'm not prepared to spend $1000 yet. I would like to get recommendation ...
2
votes
1answer
152 views
What is the market share between Canon and Nikon in the US?
I can't seem to find reliable data indicating the market share of DSLRs here in the US between Canon and Nikon. Most that I've talked to have always argued that Nikon and Canon are pretty evenly ...
19
votes
2answers
543 views
How to shoot extreme macro shot of an image formed on a water droplet?
I recently came up with this macro shot and I was curious how to take photos like this where everything is blurred out and extreme macro is in focus. I am assuming there is a lot of post processing ...
0
votes
2answers
60 views
Why would I use a rear gelatin filter over a front filter?
Lenses such as the Canon EF 17-40mm f/4 L USM offer rear gelatin filter holders, but also accept front filters via a 77mm screw on type. If I was using a circular polarizer, I would need to put it on ...
0
votes
0answers
21 views
On Windows, how can a user batch resize AND preserve star ratings in the resized photos? [migrated]
This is related to this prior question: How to copy pictures with 3+ stars to tablet preserving folder structure using free tools on Windows?
The goal is to move thousands of pictures and folders to ...
1
vote
2answers
69 views
Any recommendations on Ultra Wide Angle Zoom lens (at least 12mm) for Canon Full Frame models that also can mount filters?
I was searching for a Ultra Wide Angle zoom lens (at least 12mm) for natural scenery shooting for my 5D mark III that has to be able to mount ND filters (I have a LEE nd system), but unfortunately, I ...
1
vote
1answer
79 views
Why does the Lightroom Adjustment Brush introduce noise?
I have a photo of a person (blurred for privacy) and I used the adjustment brush on the eyes to experiment a bit. While switching the adjustment brush on and off I noticed that not only the eyes ...
1
vote
2answers
155 views
How to get this “Resident Evil” photo effect
Surfing on the Internet I found this amazing album by Jeff Lazell.
I'm wondering how he got those tones and textures. I really like them.
Any ideas of the techniques to produce those effects?
...
0
votes
2answers
63 views
How do you predict the weather for great photo opportunities?
the other day i was driving from work (on west side highway in nyc) and the weather was stunning! red skies with orange sun with few sparse clouds!
i really really wished i had my big camera, and ...
4
votes
4answers
164 views
How to learn to predict which lens to use between a 14-42mm and 40-150mm?
I am a beginner who has bought Olympus EP-3 and it is my first camera with interchangeable lenses. My two lenses are: M.ZUIKO DIGITAL 14-42mm 1:3.5-5.6 II R and M.ZUIKO DIGITAL ED 40-150mm 1:4.0-5.6 ...
0
votes
2answers
69 views
How to copy pictures with 3+ stars to tablet preserving folder structure using free tools on Windows? [closed]
Many users use starring photos to only view the best pictures later. Folders often have event name and date in them and are very important.
Using only free tools on Win system (win8), how can a user ...
-3
votes
2answers
50 views
Going to Tanzania on Safari will I need a tripod or will most shots be from a vehicle? [closed]
Will I need a tripod or will most shots be from a vehicle? Should I purchase a window clamp?
-5
votes
1answer
38 views
Cheapest and best point-and-shoot digital camera [closed]
Which is the best and the cheapest point-and-shoot, digital camera that has at least 12 mega-pixels?
I want to use the camera for:
1) Taking pictures that I can then use in Power Point presentations ...
2
votes
1answer
39 views
What should I pay attention to when buying a second hand flash?
I am planning on buying a second hand ETTL flash for my Canon 550D.
What are things I should pay close attention to when buying a second hand flash?
For example: is there a parameter, comparable to ...
-1
votes
0answers
68 views
Why is it that a photo of image in magnifying mirror shows no magnification?
I just took a picture of myself in one of those magnifying shaving mirrors and I am unmagnified in the resulting photograph. Does anyone know why this is the case?
4
votes
3answers
223 views
Why is my camera so forgiving for overblown exposure?
I've found that my camera (Sony A99) is very forgiving in terms of overexposure when shooting in RAW. By that I mean, I can overexposure by a stop or so and when I get home for the post processing I ...
-3
votes
2answers
98 views
Understanding Auto focus capability with examples
There are lot of explanations/comparisons of auto focus capability of different cameras available.
Canon 5D Mark III has been termed as a superior camera for this feature in the semi-pro range. In ...
