Spring 2012

Spring 2012
by ani

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Image quality describes how well a photograph matches a perceived technical ideal.

learn more… | top users | synonyms (1)

3
votes
2answers
94 views

How can I remove white stripes from an old photo without losing detail?

I have this old photo: I want to remove these vertical white stripes from it. I have managed to remove it by using the darken blend mode with motion blur, but as you can see down below, I have ...
0
votes
0answers
15 views

Books on Photography [duplicate]

What books are recommended for fundamentals on photography? I am starting out and have played wit the camera for over a year and i want to greatly improve and want to start correctly.
20
votes
10answers
16k views

Do digital cameras lose picture quality over time?

For some reasons when I look at my first pictures from my camera (DSLR), they look stunning. I know it could be just psychological. Another friend told me that her camera was really good when she ...
1
vote
1answer
53 views

Will a focal reducer help me image deep sky objects using an 8" newtonian?

Will a 0.5x focal reducer help me if i am imaging deep sky objects using a 1200mm focal length optical tube(f/6), 32mm super view telephoto extension eyepiece and a nikon d5500 with a sensor size of ...
2
votes
1answer
82 views

Does it actually matter considering DxOMark's Perceived MPix Score for lenses?

The score of Tamron 70-200 f2.8 Di VC is higher than Canon 70-200mm f4L IS on an APS-C Canon Camera like the 550D. Does this make the lens better than an L Lens in terms of image quality? Autofocus? ...
6
votes
10answers
54k views

How to reduce file size without losing quality or resolution?

I have 2,300+ pictures that I want to transfer to my phone but on their original size they take up a lot of space (6.44gb) I would like to trim is down to without sacrificing quality or resolution. I ...
-2
votes
1answer
61 views

Why are my pictures darker when I download them off of my camera? [closed]

I'm trying to download some pictures off of my camera and either on a flash drive, onto my computer, or even online, and whenever I try to do so the pictures become dull and dark. This is quite a ...
1
vote
5answers
309 views

Maximum distance between the camera and a specified object when the object is still visible on the picture?

Theoretically, what is the minimum distance between the camera and an object, where the object begins to not be visible ? Suppose that a camera has f as focal distance and the sensor size 2/3" and the ...
1
vote
4answers
163 views

What causes these streaked rays from light sources?

I recently bought an LG G4, whose camera can shoot in an auto and both manual mode (I can manually set the iso, aperture). I shoot 100% of the time in auto. It takes better than average photos at ...
24
votes
10answers
4k views

How much “noise” is acceptable in a photograph?

I've been at photography for a little over a year, and I primarily do landscape and wildlife/bird photography. Most of my work has been a learning experience so far, with few shots actually something ...
1
vote
3answers
8k views

How to preserve image quality when exporting psd file to jpeg?

my psd file is 9900px by 6600px and I want to export it to jpeg for a website. When I try to export it to jpeg with 72ppi and lower down pixel dimensions to about 1000px by 750px, the image comes out ...
2
votes
2answers
171 views

Why do white flowers always have a weird surrounding “glow”?

I have been trying to take pictures of dogwood blooms for a week now. I have the sharpness I want, but the flowers have a weird glow to them. The only post I could find about it is this one. Everyone ...
1
vote
1answer
134 views

Sigma 18-35 f/1.8 poor image quality

I recently bought for my D3300 two new lens. The Nikon 50mm f/1.8 and Sigma 18-35mm f/1.8 Art. As I expected, due to specifications and measurements in DXOMark, the 50mm lens is awesome. A lot more ...
0
votes
2answers
293 views

Camera producing blurred images under average lighting conditions

I have an old digital camera (A Fuji Finepix 6900Z) that, in automatic mode, tends to produce extremely blurry images, especially under slightly darker lighting conditions, most of the time but not ...
12
votes
9answers
4k views

Photographic techniques to avoid chromatic aberration?

I've read several informations here on Photo SE, as well as the wikipedia article on CA. I understand that it is inevitable that some amount of chromatic aberration shows up for a particular lens, ...
0
votes
1answer
73 views

Low quality photo to look good [duplicate]

As I have many pictures in which I have taken from my mobile phone whose picture quality comes good but not good as DSLRs or any HD quality camera. To look my photo or the main object in picture look ...
1
vote
2answers
392 views

Grainy/low quality pictures - how to stop?

I recently got a Fuji S8200 (bridge) camera and I just can't seem to take a decent photo with it at all, and I'm not sure what I'm doing wrong. Here are some examples: http://mariasdesk.co.uk/...
2
votes
3answers
81 views

Does the image quality gets affected when taken in burst mode

I am doing this project in which I have to take multiple shots of a scene in burst mode. The image is not moving. So, if I am taking photos in burst mode, will the image quality of the latter images ...
1
vote
1answer
59 views

Does MP influence ISO?

I use Sony Nex 6 and I noticed that on not really high ISO (let's say 1600) pictures get discernibly grainy. Also I know that the next's model main feature is larger image size (24MP comparing to 16MP ...
1
vote
1answer
60 views

uniform lighting when taking top view of object [duplicate]

What is the best way to take pictures of an object from top view How should the light be placed ? *to avoid shadows and how should we construct the chamber for this ? *for uniform lighting over ...
14
votes
1answer
3k views

What turned the colors psychedelic?

Took this photo through the window of a Boeing 737 with a Fuji X-S1. This is an out-of-camera JPEG with no digital filters added. The water below the cloud was almost uniformly navy blue yet it came ...
10
votes
3answers
17k views

How does using a 2x teleconverter with 70-200 f/2.8 affect use?

I recently acquired the Canon EF 70-200mm f/2.8L IS II USM lens and I love it. However the other weekend I went to Heathrow to do some aviation photography. Whilst it is great for aircraft near to you,...
0
votes
1answer
92 views

Can you duplicate RAW files without losing quality?

A lot of people say that "what happens if I edit my RAW" or "do you lose RAW when you convert to jpeg" and I assumed that if a basic function such as file duplication (copy paste) was valid, they ...
3
votes
4answers
2k views

How viable is copy pasting a professional's settings so that a noob can produce high quality photos?

How viable are "photography templates" where a professional gives the exact settings to use in a specific set up (say afternoon natural daylight at the beach, 50mm lenses with 3.5f at 3ft distance ...
1
vote
3answers
97 views

Is it possible to improve the quality of images I grab at 90fps?

I am using "Raspicam" (https://www.raspberrypi.org/documentation/hardware/camera.md) for a robotics project, where I need to get as many images as possible in 1 seconds. Camera works perfectly fine ...
-1
votes
1answer
93 views

How can I automatically downsize images which have more pixels than needed for the actual resolution? [closed]

Many factors affect the true resolution of an image — the actual detail resolvable — including lens quality, sensor size and technology, noise and noise reduction, motion blur and camera technique, ...
3
votes
3answers
257 views

Does a full frame with a teleconverter perform better than an APS-C without a teleconverter?

Context Putting a teleconverter on a full frame lens magnifies the center of the lens but gives more reach due to that with some drawbacks. I've rediscovered focal reducers that do the opposite, ...
6
votes
2answers
188 views

Do nano coatings actually make a difference?

Nikon famously has "nano coatings" on it's higher ended lens, and many photographers online swear that this visibly improves their images. However, it's not clear what the actual improvement is (...
-3
votes
1answer
258 views

How does focal length determine lens quality? [duplicate]

What does an 18 - 50 mm lens mean? Are those numbers the first focal length and second focal length? How do you use this parameter to judge what kind of lens to buy? Does more equal better?
5
votes
2answers
253 views

What temperature lighting should I use for photographing old paper photos?

I know I should be using daylight lighting system to achieve natural looks of photographs, but I don't want to spend a lot of money for profesional lighting equipment, so I was thinking to just put a ...
2
votes
2answers
140 views

Why does my low key photo look pixelated on online services?

I captured a low key RAW photo with my Nikon D5100. I processed it using Lightroom, exported it as a JPG and then set it as my Facebook profile picture. Despite the initial JPG looking good, the ...
1
vote
0answers
54 views

Canon vs Sigma vs Tamron lenses? [duplicate]

Is there a significant quality difference between lenses made by Canon and those made by Sigma or Tamron? Specifically, I have been looking at the EF 300mm f/2.8L IS II USM: but if the Sigma or ...
1
vote
4answers
188 views

What is a “losee file format”?

I am wondering what a "losee file format is". I came across the term in my photography class book The exact question in the book is: Which of these file formats are considered losee? Does that ...
0
votes
4answers
166 views

Why do camera manufacturers advertise image processors but not the sensor itself?

Camera manufacturers often advertise their image processors version in advertisements, such as DIGIC 6 (Canon), EXPEED 5A (Nikon) and many more. But we never see they advertise the sensor they are ...
5
votes
2answers
185 views

Are there still two classes of Canon IXUS/Powershot/IXY/ELPH around?

When I last time bought a Canon Digital IXUS compact camera, there were basically two series available: "Ultra-compact" Digital IXUS 65 ... 70 ... 75 ... 85 IS ... (Europe) Powershot ...
0
votes
2answers
383 views

Picture quality of a nice point and shoot with same size sensor and same zoom range as an interchangable lens camera

I'm trying to figure out whether I should get a camera with an interchangeable lens or a point and shoot that seems (based on the specs) very similar and the same price. The two in particular I am ...
6
votes
2answers
394 views

How does the usual jpeg 0-100 quality settings translate into Photoshop's 0-12 quality setting?

JPEG encoders usually use a quality setting of 0-100, whereas Adobe photo software uses a 0-12 setting. Does anyone know how to convert between these? (I am actually not clear on whether the 0-100 ...
-1
votes
3answers
261 views

Why does computer screen size affect image quality?

I have a 13 inch screen and my friend has a 27 inch screen. If we both download the same photo from my website, the file size and photo dimensions are the same (70ko and 300x450 pixels). However when ...
0
votes
1answer
137 views

Digitizing old photos flatbed scanner or dslr?

After plenty of research I realised that flatbed scanners lose the battle to dslr when it comes to scanning negatives as seen in the picture: But what about old basic paper photos? Will an average ...
-1
votes
5answers
286 views

Why are my portrait pictures from my new DSLR low quality and “pixel like”?

I recently got a Canon T5i and I took some pictures of my nephew. However, they're very poor quality - they look very "pixel like". Is the poor quality because it was a RAW file, the lighting or was I ...
1
vote
1answer
106 views

Is it possible to paint a nearly identical copy of an old photo? [closed]

I was wondering if it would be possible for artists or graphics designers to paint an almost identical copy of an existing photo? I ask because I have a grainy photo and it would be nice to see it ...
0
votes
1answer
101 views

Is there any way of saving this blurry photo??? [duplicate]

http://i.imgur.com/Lb9FXGe.jpg Is there ANY way to save this blurry photo? I have photoshop. PLEASE HELP.
21
votes
13answers
26k views

How does the lens diameter influence photo quality?

I have tested two different 50mm lenses in my camera. One was a Nikkor 50mm ∅52mm. The other one was a Sigma 50mm ∅72mm. I took some pictures with both lenses using the same setup for aperture and ...
2
votes
6answers
704 views

Why are some photos sharp in the center, but soft on the edges?

I have seen many photos which are quite sharp in the center, but soft on the edges. What is the reason for this, and how can I prevent it? My first guess is that it has to do with the lens. EDIT: ...
0
votes
3answers
213 views

Does having an autofocus motor in body vs lens affect image stabilization or image quality? [duplicate]

In terms of image quality and image stabilization, what difference does it make to have an autofocus motor in-body vs.in-lenses ? The question How do camera body motors compare to in-lens motors for ...
4
votes
0answers
92 views

How does the digikam quality sorter work?

I'm not quite sure this is the best place to ask, but there is a digikam tag, so I think it is not off-topic. I'm trying to use the digikam quality sorter, but I fail to understand how it works. The ...
2
votes
1answer
91 views

Downsides of using M42 or T mount lens on newer mirrorless bodies?

Context I've purchased an older 400mm f6.3 t-mount lens and I'm considering buying a Helios 44-2 2/58 M42-mount lens. I've used the 400 for a week on my Sony a6000 and I don't see any problems with ...
1
vote
0answers
74 views

Can I size an image so it can be printed at 5×7" but looks bad at sizes above that? [duplicate]

I generally try to print all images for clients and require that they purchase a print prior to the release of any "small sized file" for holiday cards, web-use, but a faux-pas in my new (app-based) ...
13
votes
3answers
2k views

If I want to shoot darker shots, is it better to increase the lighting and then darken in post to retain clarity?

I'm just getting started - in my last shoot, I was using a 6D with a 50mm/1.4. In low light, the pictures looked fantastic on the viewfinder but on the computer screen, appeared extremely grainy. ...
2
votes
2answers
180 views

What is the “airy disc”, in simple language?

In my understanding, this is relevant to photography because if you are shooting light of a certain wavelength (or primarily so, and such as: a blue scene), your aperture size can affect the sharpness ...