Questions tagged [image-quality]

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

Filter by
Sorted by
Tagged with
0
votes
1answer
1k views

Does using more than one step-up ring affect quality?

Hi I'm new to photography / videography and would like to know if using 2 or 3 step-rings would cause any vignetting, flaring, or any sort quality reduction? My case is I'd like to step-up from 49-...
2
votes
1answer
449 views

Is a GoPro recommended for still images while doing tourism?

I have an iPhone SE and a GoPro Hero 4 Black. Which of them do you recommend using when you are doing tourism? And why? Kind of tourism: I'll be visiting London, Paris, Amsterdam, Prague, Germany, ...
7
votes
3answers
3k views

Make photos on Facebook nicer?

I upload photos to my Facebook page using the latest Lightroom. I'm wondering if there are some tips or tricks, or maybe hidden options on Facebook that makes the images served to the viewers higher ...
2
votes
1answer
224 views

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

Will a 0.5x focal length reducer help me to reduce the exposure time if I am imaging deep sky objects? I'm using a 1200mm focal length optical tube (f/6), a 32mm super view telephoto extension ...
3
votes
2answers
902 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 lost ...
2
votes
1answer
429 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? ...
7
votes
10answers
79k 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
178 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
2k 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
3answers
24k 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
265 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
2k 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 ...
1
vote
2answers
302 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
5k 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, ...
-1
votes
1answer
198 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
1k 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/...
3
votes
3answers
3k 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
74 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
432 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 ...
0
votes
1answer
670 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
178 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
141 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, ...
4
votes
3answers
2k 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
535 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
1k 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
691 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 ...
1
vote
0answers
133 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 ...
0
votes
4answers
479 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
2k 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
591 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
506 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 ...
0
votes
3answers
5k 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
552 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
5k 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
169 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
364 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.
25
votes
13answers
44k 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
1answer
287 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
83 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) ...
2
votes
2answers
558 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 ...
2
votes
0answers
71 views

Can I get a high quality image from a rostrum mounted camera and bounce flash?

I have some approximately A3 sized documents I need to scan but don't have access to an A3 scanner and it's beyond my budget to purchase one. However, I can probably run to a rostrum stand for my ...
11
votes
2answers
6k views

Does image quality of a lens depend on the camera used?

I recently bought a Canon 50mm f1.8 for my Canon 1000d. But, I find that the images are not as sharp as those I saw in the reviews or any other images taken using other cameras like the 550d and above....
5
votes
1answer
1k views

Does writing EXIF tags influence jpeg quality?

If I understand well then the EXIF data is written in an extra space of the JPEG file. When I add or modify an EXIF tag does this leave the picture untouched? I searched for this and I was not able to ...
0
votes
2answers
75 views

Checking images for corruptions [duplicate]

Is there a tool that can be used for batch checking images for corruptions such as these (in this case, occured due to error while moving file),
0
votes
1answer
418 views

How to take the night skies and meteor showers? [duplicate]

I have a Nikon D5200 and last night I went to take few night sky pictures hoping to capture a passing meteor. There were plenty of meteors I seen last night, but I was able to capture only one. ...
5
votes
1answer
353 views

In terms of “image quality”, is the sensor the only spec of a DSLR I should look at when shooting RAW?

There are so many specs which don't have any influence on your RAW file. I'm trying to isolate the factors that matter for image quality only. For example, I'm not sure about the processor : of ...
0
votes
1answer
65 views

Recommended F-Stop for older Canon 35mm F/2 [duplicate]

I have a few year old Canon 35mm F/2 lens (Here it is on Amazon). I've been shooting wide-open, but I realize that doesn't make for the sharpest photos. What would you say would get me the sharpest ...
1
vote
4answers
2k views

Will a TIFF or JPEG be a better choice for detailed representation of an old painting?

I wish to purchase a high resolution photograph of an old painting to project and copy. The images are either in TIFF format, which is 148.8 mb, or JPEG, 24.3 mb. Would either of these give me the ...