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Before the rush
by evan-pak

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

learn more… | top users | synonyms (1)

0
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3answers
239 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 ...
20
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1answer
2k views

What is decentering?

I have heard of a condition in imperfect lenses known as "decentering". What is decentering? When a lens is decentered, what exactly is wrong with the optical elements? What are its symptoms and ...
12
votes
7answers
8k views

Why does using flash sometimes create these white spots in the photo?

I have an Olympus FE-190. When I take a picture, with flash on Digital Image Stabilizer (DIS) mode, I get white spots in pictures. This doesn't happen always. There is only an option called Pixel ...
10
votes
3answers
18k 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,...
7
votes
3answers
2k 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 ...
6
votes
7answers
4k views

Are there websites which compare digital cameras based on technical image quality?

There are lot of sites, which compare digital cameras by parameters, user experience and etc. I looking for a website which has some kind of procedure to test image quality and compares digital ...
4
votes
2answers
1k 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 ...
3
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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. ...
3
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3answers
662 views

How to remaster images from an early digital camera?

Background: I've got a lot of old photos taken by my first digital camera Epson PhotoPC 600 from 1997 and I'd love to make them look as good as possible. I do know they'll never look like those from ...
3
votes
3answers
768 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 ...
3
votes
7answers
10k views

Is there an IQ gain from Canon's 18-135 to 24-105L?

Just got a Canon 40D body, and was about to get Canon's 24-105L lens. I hear people raving about the lens, and it all made sense until I saw a Cameralabs' review of the lens. So don’t buy the EF ...
2
votes
5answers
207 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 ...
1
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3answers
192 views

How can I get everything out of 120 film?

I've just begun shooting 120 film in a 1956 Yashica Mat LM. I'm new to film photography, but I know that 120 film is supposed to have the equivalent resolution to a 100 megapixel sensor. Most film ...
-1
votes
1answer
99 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, ...
-1
votes
2answers
489 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?
-1
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2answers
9k 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 ...
-3
votes
1answer
265 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?