Questions tagged [image-quality]

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

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4
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2answers
2k views

Why are JPEG images from camera huge and the same images exported from Vistaprint software 10 times smaller?

JPEG images from my Nikon D3300 are roughly 12-15MB big at 6000 x 4000resolution. RAW images converted to JPEG through LightRoom are also 12-16 MB. I recently created an album through VistaPrint ...
0
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3answers
307 views

Full frame or not? [duplicate]

I am struggling to decide between the 5D and the 70D as an upgrade to a 600D. I am an amateur photographer achieving pleasing results with my 600 and I have 5 good lenses. The kit (18-135) is an EF-S ...
0
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1answer
8k views

What are the differences between the Canon EF-S 18-55mm f/3.5-5.6 III and EF-S 18–55mm f/4–5.6 IS STM

I'm looking at these two lenses: Canon EF-S 18-55mm f/3.5-5.6 III & EF-S 18–55mm f/4–5.6 IS STM What are the differences between these two lenses, specifically in regard to overall image quality?...
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6answers
236 views

How do you explain to an inexperienced person how to take photos for you to make a panorama?

There are several inexperienced people that I need to take photos of rooms so I can create 360° x 180°-spherical panoramic images from them. The problem is, that they always misunderstand what to do. ...
3
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2answers
207 views

NIght Photography while at sea

My son is in the US Navy. He wants me to figure out which compact camera would allow him to take pictures at night while at sea of the stars, and bio-luminescence. Unfortunately, while he can use a ...
-4
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2answers
129 views

Distinguishing Paintings from Photographs

Is there a simple, sure-fire, 100% accurate method one can use to distinguish paintings and other works of art from photographs? I am not asking: 'What is the difference between a painting and a photo?...
14
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11answers
16k views

Is there a noticeable difference in image quality between Micro Four Thirds and APS-C entry-level DSLR cameras?

I am thinking about either buying a Nikon d3400 (APS-C or an Olympus OM-D EM-10 mkii (M4/3). In principle I would prefer the Olympus, as it is much smaller and could fit in a jacket pocket. However ...
24
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12answers
36k views

Does simply opening and closing a JPEG file decrease image quality?

I've had quite a few photography classes, read many photography books, and screened many forums. And I can't find a consistent answer to this question. One "camp" says there is a loss of image quality ...
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3answers
93 views

Troubleshooting an image [duplicate]

I have an image, below, that seems "soft" and I'd like to know why. Possibly it was resized from something like 3000 x 3000 and not sharpened. Possibly it's a 500 x 500 image, expanded to 960 x 960. ...
8
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6answers
3k views

Does noise in images depend upon “Megapixels” or “ISO”?

I have a question about image quality. Does noise in an image is depends upon "Megapixels" or on "ISO"?
0
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2answers
780 views

GoPro Hero6 Linear mode

I am planning to buy a Gopro Hero6 camera for mainly taking still photos and occasional video. My reason for choosing Gopro is ease of carrying and using it while travelling. Although i have heard a ...
0
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3answers
286 views

What is causing the lack of sharpness in this picture? [duplicate]

What is the most likely cause of the lack of sharpness in this picture? Taken with a Nikon D3000 and a 55-200 lens at 200mm, 1/320s, f/5.6, ISO 400.
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2answers
187 views

Why is my Sony A57 creating low res JPGs?

I have used a Sony A57 since they became available. I always have the resolution set for 16M and FINE for JPEGs. I just took an important set of photos that were intended for large blow-ups. But ...
4
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5answers
2k views

Will a lens upgrade from the kit lens give me better colors on my backpacking travels?

I currently have the Nikon D5300 along with the kit lenses (18 - 55mm). I use it for my backpacking travels to make better shots than with the smartphone, but what I've noticed is that the photos are ...
10
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5answers
2k views

How can these photos by Martin Schoeller have such a high quality?

Today, I ended up in a site showing famous people faces in a very first plane. I just got impressed by the quality those photos had. What do you think are the factors you have to tweak to reach that ...
15
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7answers
11k 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 in Digital Image Stabilizer (DIS) mode, I get white spots in pictures. This doesn't happen always. There is an option called Pixel Mapping, ...
3
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3answers
1k 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 ...
5
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2answers
366 views

Can deconvolution help improve the apparent sharpness of mirror lenses?

I have recently ordered a Samyang 500 mm/f6.3 mirror lens on eBay, for about £80, largely out of curiosity -- at the very least, it will be an interesting toy and I can always sell it. Mirror lenses ...
2
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1answer
99 views

Digitize and enhance a photo from the early nineties

I have a photo taken in the early nineties featuring someone who sadly is not going to be around for much longer. All I have is the photo, we looked everywhere for the negative but it couldn't be ...
2
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2answers
243 views

Why is my photo so low in megabytes?

I took this photo at night with an iso of 100, aperture of 16, shutter speed of 30 seconds in raw. I want to send it to print but when exported to jpeg its only around 8.4 megabytes and the print site ...
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2answers
540 views

What online tools exist to compare image noise between different sensor sizes?

I am currently thinking about upgrading my Canon SX720 with 1/2.3-inch sensor to a compact camera such as Canon G9X Mark II with 1-inch sensor. Before doing that I want to look at some samples images ...
2
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3answers
1k views

The reason for my pale colored / bad contrast film images?

I'm a newbie at film photography and only recently fixed up an old Canon AL-1. My first try at film photography was with a Fuji 35mm iso 200 film. Developed & printed the film at an expensive ...
5
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2answers
8k 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 ...
0
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1answer
386 views

Lens quality impact on sharpness

I have a Nikon D7200 and recently took it on a trip where I shot with both the kit AF-S 18-140 f/3.5-5.6 ED VR lens and the Nikon AF-S 24-70 f/2.8G ED lens. While I consider myself a relatively good/...
3
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3answers
227 views

Real world differences in pinhole sized apertures

I'm interested in experimenting with a pinhole camera and am considering the Ilford Obscura or Titan. The focal lengths are slightly different and not of concern for me. What I'm really interested ...
12
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6answers
2k views

Does aliasing occur in film photography?

I have observed aliasing with digital photos and videos. While film does not have infinite resolution, it appears that film grain does not have the regularity of a digital sensor, so aliasing may not ...
1
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2answers
141 views

Will my photographer be able to sell me better prints than I can get from the 2400×3600 JPEG files I hav? [duplicate]

I just got my senior pictures back and want to print them professionally. They were shot with a Canon EOS Rebel T5 and specs are 2400 x 3600, 240 dpi. My photographer uploaded them to her website and ...
2
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3answers
283 views

Calculating cost of Inks

I am working on an app in which I need to estimate the amount of ink used to print something and corresponding cost. I am not sure if this is the right place to ask this question. If not, please point ...
0
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3answers
4k views

I open the image it's blurry, I zoom in it's sharp either in photo viewer or photoshop

All images I open in photoshop or just in a windows photo viewer look blurry when zoomed out and clear when zoomed in ( honestly I open the image and it's blurry, I zoom in it's sharp). Whats going on?...
2
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3answers
773 views

Would stacking thinner ND filters perform as well as one greater ND filter?

If I stacked a Vivitar ND8 and ND2 filter, would they function as well as an ND16? Would this work for solar photography, or would a piece of welding glass be better? Edit: I also have an ND4 if that ...
1
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3answers
474 views

How can I best determine if an image is in focus when reviewing on my DSLR's LCD screen?

I currently use a Nikon D200, admittedly an old camera. With that camera, if I want to check image quality, I use the magnify function and the thumb wheel. This allows me to zoom in on the image to a ...
9
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7answers
647 views

More detail close up at 50mm than further back with at 85mm?

In terms of quality of picture and overall detail of subject (e.g. the face of a child), would it be better to stand closer to shoot at 50mm or stand back at 85mm (assuming the quality of the lens was ...
0
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1answer
2k views

Taking a passport photo with DSLR Canon 1200D [duplicate]

New to this community. I have had a DSLR for a few years now so familiar with a few settings. I tried and failed to take a passport photo . The main issue I am facing is getting shadows around the ...
3
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8answers
12k 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 24-...
57
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4answers
74k views

What is moiré? How can we avoid it?

What is the image defect called "moiré"? What causes it, and how can we avoid or reduce it? Is it related to "false color"?
1
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1answer
87 views

What's the cause of a small area of an image affected by an artefact?

This presents itself as a lighter area appearing to be overlaid on the image. 1. It's only with one lens, Nikon 18-70. I have four other lenses and it does not occur with any of these. (18-55, 55-200, ...
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4answers
2k views

Is there any difference between Nikon's current DX and FX 35mm f1/.8 primes other than the image circle and the ED elements?

For some Nikon DSLR lenses, like 35mm primes, Nikon has two offers: AF-S DX NIKKOR 35mm F1.8G ($200 USD) and AF-S NIKKOR 35mm f/1.8G ED ($530 USD) From my understanding, the lenses differ for only ...
5
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3answers
8k views

Why do different smartphones with the same megapixel camera resolutions have different quality of image?

There are different brands of smart phones available. Frequently two different big brand smart phones (Nokia, Samsung , Apple, Sony etc.) with the same Megapixel count have a different quality of ...
0
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2answers
395 views

What of those EXIF values tell me more about my image's quality?

I have some images of which some look blurry, and the others look non-blurry. I'm trying to analyze the EXIF data of such images in order to determine why some images look blurry and why others don't....
1
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4answers
870 views

Does sensor size always matter in all situations?

I recently bought a Canon SX720 camera which has the sensor size 1/2.3". It's probably the smallest sensor size. Some good camera smartphones such as Apple's 7 Plus has got 1/3" sensor. Does that mean ...
3
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4answers
15k views

Does converting RAW files to TIFF lose image quality?

Before I found out about Camera Raw, I used to convert my photos from RAW to TIFF, using the XNVIEW convertor, downloaded from the Internet. My question is whether I lost image quality or anything ...
8
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5answers
2k views

How can I detect upscaled photos?

I have a collection of JPEG photos, each 500 to 600 pixels on the longest side. How can I detect which ones have been algorithmically enlarged from a substantially smaller photo? An online ...
7
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3answers
1k views

Qualitywise, is there any downside to overexposing an image (within the dynamic range of the camera)?

If i underexpose an image and have to crank up the exposure in post, this will also amplify the noise, resulting in a lower quality image. In this case, it would've been better to expose correctly ...
5
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2answers
3k 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 ...
45
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12answers
6k views

Should I keep Image Stabilization (IS) off when I do not actually need it?

I own a Canon 7D and a EF-S 15-85 IS lens and I keep the image stabilization turned on all the time. Recently, an experienced photographer told me that this is a huge mistake because it reduces image ...
-2
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2answers
228 views

Can I produce this kind of image with my canon 550d with 50mm lens

see this image, how splendid this is, its colors, sharpness all good. My question is can I get same result with my canon 550d with 50 mm lens or should I upgrade my camera.
0
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4answers
6k views

will i lose data/quality converting my raw files to jpeg on my pc? [duplicate]

will converting raw files to jpeg be the same as taking a jpeg photo to begin with? or will I keep my raw quality converting it to jpeg post shoot?
0
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3answers
5k views

How do I find out what camera was used to take this photo?

I want a way to know what camera produced this beautiful photo. I shot a photo in the same place with my Nikon D3200, but it was not close to the quality of the other shots. I believe that could be ...
0
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1answer
108 views

Why is the price between these two lens differ so much? [duplicate]

I am a beginner in photography and trying to understand about camera lenses. This morning I came across Mike Matas' video which was made using this thousand dollars Canon 50mm. I also have a 50mm ...
0
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1answer
1k views

Why do my images look fine in Lightroom itself but poor quality when I export them?

I'm editing my night shots in Lightroom and use Google Nik Collection Dfine2 to reduce the noise.. Noise reducing in Dfine is the last item in my workflow, and when I export image .jpg it has poor ...