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

learn more… | top users | synonyms (1)

1
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1answer
139 views

Is the size of the rear opening of a lens related to image quality?

I purchased a Sony NEX F3, and it came with a 16mm lens and a 18-55mm lens. It seems to me that the 18-55mm lens produces better picture. Does the bigger lens opening in the 18-55mm lens produce ...
3
votes
2answers
749 views

Is there a set of common criteria for evaluation of photographs?

Is there any set of criteria for evaluating a single picture that is in common use? I have the following situation: I want to write down my criteria on how I rate my pictures. At the moment I give ...
5
votes
2answers
1k views

Is this the level of sharpness and detail I can expect from a Nikon D7000 and 18-105mm lens?

Being a newbie, I would like to have some comments on my current skill level and quality of my current equipment. I own a Nikon D7000 with 18-105. I am not very much satisfied with the quality of ...
5
votes
6answers
37k 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
2answers
130 views

Which is the factor that creates noise in a photo? [duplicate]

Possible Duplicate: What is noise in a digital photograph? This happens while talking photos on dark or night. The Black color is not black, it has some noise. What would be the reason for ...
1
vote
2answers
1k views

Why isn't color from my Canon 550D up to my expectations?

I am using a Canon 550D and I am not satisfied with the image quality that it offers. By image quality I am specifically concerned with a general feeling of better color. I have used different lenses ...
3
votes
1answer
652 views

Noisy images from Canon PowerShot SX150 IS

I purchased "Canon PowerShot SX150 IS Point & Shoot 12x" around 9-10 months ago. I was satisfied with image quality. But from last 3-4 months, it is not able to snap good quality pictures as it ...
3
votes
2answers
7k views

Reasonable file size for printing high quality photography as A3 posters?

I bought some photos and need to send them off for printing. The printing company asked for the final files to be in PDF format, so I've converted them using Illustrator and Photoshop. I also added a ...
7
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3answers
1k views

Why are macros from my new DSLR no better than those from my P&S?

I have been using a 14mp point and shoot for a couple of years. I like to take macros of flowers, frost and bugs. I want to keep zooming in on my PC to see deeper into the flower, so I bought a 18mp ...
4
votes
2answers
822 views

Are cropped images from a full-frame sensor equal quality to full APS-C images despite the lower resolution?

If I put a DX lens on a Nikon D700, it will reduce megapixels to 5.1. I understand that FX pixels are about 2.5 times larger than DX pixels. Would I be correct to assume that, therefore, my FX image ...
5
votes
2answers
133 views

Favourable characteristics of robotics research camera?

I use Imaging Source CCD firewire digital cameras to capture video streams for use in robotics research. These cameras are reasonably priced and performance is (from my perspective) decent. ...
3
votes
2answers
332 views

The Lowdown on Image Quality on DSLRs

I have seen sites that use measure DSLR performances with Image QUality (in numbers). So I was thinking, given a D800 and a D7000, with the same lens, the same lighting condition and many other ...
1
vote
1answer
78 views

what is meant by area sampling in graphics? [closed]

What is meant by area sampling in graphics ? I know it is an anti aliasing technique.
3
votes
3answers
660 views

Can you tell how effective a camera's high ISO images are from the specs?

My current camera, a Canon 50D has OK image quality at 1600 ISO and its not really very usable above that. I know that all the manufacturers publish an ISO range for their bodies. But just because ...
2
votes
3answers
4k views

Lens with small scratches on the front element - how do they affect IQ?

I am looking to buy a CANON 28mm 1.8 EF lens. I found an offer, significantly discounted, of a lens with small scratches on the front element. The offer is very tempting. Here is a photo posted by ...
-1
votes
2answers
350 views

How to reduce the image resolution to increase ppi?

Having an photo of 4000x3000 resolution with 240ppi. Is it possible get a resolution of 400x300 resolution but with higher ppi?If possible how to do that?
7
votes
2answers
3k views

Canon 50mm f/1.8 vs Canon 28mm f/1.8 (vs Sigma 30mm f/1.4)

I have the nifty-fifty and I am in love with the kinds of images it can produce, particularly when it comes to portraits. I really enjoy the lens, but I have one problem; it is a little bit too tight ...
3
votes
1answer
409 views

Clearer - Sharper images reducing noise?

I would like to make my images 'sharper' / 'clearer' with more detail and color and was wondering if this if more of a Equipment issue or rather more of processing the images with different ...
2
votes
2answers
319 views

What is meant by Subjective Image Quality (SQF)?

What does the SQF result in the Imatest Documentation mean? I don't understand the graph showing SQF against Picture Height. How should I calculate SQF value for the camera being tested. For example, ...
3
votes
2answers
1k views

Is it possible to combine multiple cameras for improved detail?

I'm a novice to photography and I'm wondering if its possible to combine multiple cameras to get a greater level of precision? I'm thinking that if you capture more light you should be able to ...
11
votes
8answers
2k views

Can a sharp picture with a kit lens plus post processing rival a “pro” lens?

If I am able to take a relatively sharp picture with a kit lens, and boost the vibrance and or saturation during post processing, will that picture be comparable to ones taken from an expensive ...
2
votes
2answers
856 views

Can ultra-high ISO ever yield good results? [duplicate]

Possible Duplicate: Is high ISO useful for photography? My camera can apparently extend to really high ISO's, however I see serious noise over 2,000 ISO at any shutter/apeture combination. ...
27
votes
2answers
3k views

What characteristics make a lens good or bad?

When reading lens reviews on the Internet, I often find subjective statements about the image quality that a lens produces, such as "good contrast" or "sharp". The problem is that I don't think I am ...
7
votes
1answer
358 views

What causes this bluish tint and other anomalies in this image?

I bought a Tamron CF Macro 28-70mm 3.5-4.5 lens on eBay for $35 AUD plus postage - cheap enough to give it a go and see what it's like. I took a range of photos with my Sony NEX-C3 to get a feel for ...
0
votes
1answer
966 views

What does pixel count suggest? [duplicate]

Possible Duplicate: Do megapixels matter with modern sensor technology? Mobile phone manufactures now advertise their phones having camera with bigger megapixel count. Does it mean the ...
0
votes
3answers
699 views

Highest quality vs smallest file size for email

I'm intending to create some photographic images for printing. They'll be used to hang on a wall but will be quite large (80 - 100cm square). Obviously I want the quality to be as high as possible, so ...
3
votes
1answer
3k views

Motorola Razr Maxx compression removal

I've recently acquired a Motorola Razr Maxx. I had hoped its camera would be good for those random shots of opportunity, but unfortunately its quality seems crippled by overzealous JPEG compression. ...
1
vote
3answers
699 views

Are there software (preferable freeware) that can judge the quality of a photo (jpeg / raw format)?

I was wondering if there are any freeware that is able to judge the quality of a photo (can be a jpeg or raw format) and give a score to it? I kind of sick of comparing photo taken by different ...
4
votes
5answers
948 views

How can I resize more than 2GB of travel photography with no quality compromise?

I have more then two gigabytes of travel photography. Each image takes up than 4 to 5 megabytes. I have to send them to some one. How can I resize all images while retaining high image quality?
2
votes
7answers
941 views

Why do these images taken at significantly different ISO appear equal in quality?

How come I can't tell the difference in quality of these two photos, even though one is shot at ISO 160, and the other at 1600 ? Note: EXIF data has been stripped from images below by imgur saving ...
6
votes
5answers
710 views

Is there any reason to take 3 RAW/JPG images to get most from HDR?

I'm new to photography and what I've seen so far: ViewNX allow me to change exposure +2/-2 stops in RAW HDR is about larger dynamic range and merging shadow details from overexposed image with ...
-1
votes
2answers
417 views

Why color and saturation is less on compact than on DSLR?

So basically I compare Nikon d5100 and Canon Powershoot and image contrast is mach lower on second camera. Is it because of compact sensor quality, or it is theoretically impossible to have great ...
0
votes
3answers
554 views

How to resize an image for web display?

I'm building some websites for a friend of mine, and putting them up on my home webserver. This server is pretty simple and my network connection ain't that good so the images take pretty long to ...
2
votes
2answers
463 views

Good compromise on quality/compression for hi-rez photographs?

My Nikon D90 dumps out photographs that are 4288 x 2848 @ 300 DPI. They're about ~3 MB in size. I'm an amateur in every sense of the word. I don't know what 75% of the camera settings do. I'm ...
4
votes
2answers
2k views

Does using an adapter on lenses affect the quality of the image?

The camera I am thinking buying doesn't have much selection of lenses. Only 7 or 6 lenses, but using an adapter on the camera can widen the lens selections. Does using non native lenses have any side ...
4
votes
3answers
4k views

Is there are any difference in quality between Large Fine JPG and converted NEF?

Assume that I do not want to do any post-processing, such as white balancing, etc. I would like to preserve the best resolution (for possible cropping). So the question is: Are there any quality ...
0
votes
1answer
247 views

Why picture quality decreasing with very big apperture? [duplicate]

Possible Duplicates: What is a “diffraction limit”? Why are my photos taken at f/11 less sharp than those taken at a wider aperture? I have made 3 landscape pictures with f/12, ...
5
votes
4answers
436 views

How do I properly determine which camera is better in low light?

This question is motivated by the fact that I'm trying to decide between the the Canon 5D Mark III and the Nikon D800. I really would prefer the one that will perform better in low light. As far as I ...
2
votes
3answers
440 views

Does the higher price lens always reflect better quality regardless of it being 3rd party or not?

When looking at various lenses you will see the camera manufacturer lenses made by the camera manufacturer. Then you will see other 3rd party lenses (Tamron, Sigma, etc). Does it pay to get the ...
14
votes
5answers
4k views

What is the major factor that makes colors in photos very vivid?

Once you have a good enough camera, what are the other major factors that makes some of the photo very vivid? For example, looking at the following picture, the colors are vivid. If I take the same ...
6
votes
2answers
468 views

Can I get better image quality with a higher focal length or by cropping an image from a sharper lens?

Two well known ways to get better image quality are to use a sharper lens, and to zoom in to fill the frame (as opposed to zooming out and cropping in post). Sometimes there is a give and take between ...
3
votes
3answers
968 views

How does the Lensbaby Scout perform as a cheap fisheye lens?

I'm interested in the Lensbaby Scout since it seems like a cheap fish-eye option, but I am unsure how it performs. What about the lens's quality (build quality, image quality, and optical quality)?. ...
0
votes
1answer
302 views

Image Quality of Shooting at 3MP then resizing to 1MP vs Shooting at 1MP [duplicate]

Possible Duplicate: Does it give higher quality to shoot in low-res mode in-camera, or to downsize high-res photos later? I want my final image to be stored at 1MP and I want it to be in ...
4
votes
4answers
3k views

What post-processing tricks can be used to improve the quality of photos taken with the on-camera flash?

I know that the on-camera flash tends to produce poor images in general (the subjects are washed out, and the light from the flash isn't very powerful). But... sometimes there's no other choice but ...
3
votes
3answers
511 views

How can I improve these photos of porcelain tiles?

We are opening a new shopping website for bone china products. I was given some photos of porcelain tiles but they look much worse than they are in real. I wonder if there are any basic techniques ...
2
votes
1answer
822 views

Does reducing JPG resolution decrease, increase, or have no effect on image quality?

I'm getting ready to download a bunch of images from microstock photo agency Dreamstime. I'll eventually want most of the images in the 400x300 pixel range for my website when I'm done working with ...
9
votes
2answers
3k views

Is it worth using Pentax's Premium JPEG quality setting?

Similar: How do I choose which resolution (megapixel) and compression (normal, fine, superfine) to shoot in? The Pentax K-5 has a JPEG quality setting called "Premium", denoted by four stars, which ...
2
votes
2answers
385 views

How many megapixels are needed on a smartphone to take above quality photos?

Just regular above quality photos for Facebook and normal things.
-1
votes
2answers
6k views

What's the max size a photo can be enlarged while preserving the same image quality? [duplicate]

Possible Duplicate: Is it possible to increase the pixel density of an image? Is there a general formula for image size vs. print size? Can one of the many photo editors max a photo ...
0
votes
1answer
133 views

If shoot pictures in 10.0 mode or 12.0 what is quality?

If my camera is shooting in 10.0 or 12.0...what will my megapixels be? I am a beginner and I know I need them to be at least 1600x1200 for my purpose.