Questions tagged [sharpness]

describes clarity of detail, the perceived combination of resolution and acutance.

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What might cause the center of my image to be less sharp than the edges?

I'm using a Sony A7R IV camera with a 12mm f/2.8 ED AS NCS Fisheye Lens. From the rescharts and MTF information that I've seen of this lens, the center sharpness is much better than near the edges. ...
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240 views

Sigma 60-600mm is never sharp whatever the aperture

Today I tested my sigma 60-600mm lens and I was really disappointed by the quality of the images produced. I use a Nikon Z6ii and the FTZ (v1) adapter and everything is fine with my other F-mount ...
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-1 votes
1 answer
167 views

Is the Sony A6400 weaker than the Pixel 4a?

I've just bought a returnable Sony A6400. I've taken some shots with it, and the same shots with my Pixel 4a. (Static subject; lighting not bright, but nowhere near night mode.) A6400 set to JPEG ...
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4 votes
3 answers
203 views

How can I get rid of shadows generated from light source behind object of interest?

I am work in research and I have a areascan basler camera and objective that I am using to track the deformation of an object under load. I have attached an example image shown below. I am looking ...
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2 votes
2 answers
163 views

How to calculate MTF ? Need help with the formula

I'm trying to reproduce MTF chart programmatically but I'm stuck at some point. I'm starting with a clean bar chart like this: I then take a picture of this pattern with a smartphone (printed on HD ...
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How to technically measure sharpness?

I'm trying to measure sharpness through a script in order to measure sharpness across different devices. My methodology: I have a pattern with pure white and black stripes like this: I use HD ...
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1 vote
2 answers
590 views

Why are my new camera's photos coming out blurrier than my iPhone's when I look at them zoomed in?

I am a beginner at photography and recently got a camera (Nikon D5600). I watched a few videos on how to use it but I am still finding it difficult to operate. I have several questions but the main ...
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2 votes
3 answers
358 views

Slow shutter speed and image sharpness

I'm new to photography, I hope I won't misuse any terms here. Let say I shoot a still subject like a product on a tripod with controlled lighting. Let say I have little light and so I use a slow ...
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2 answers
259 views

Picture looking sharp in Live View mode, then losing sharpness after picture has being taken

Since recently I am experiencing an issue with the sharpness of my images. I am using canon 70D with a macro lens for shooting jewellery and I need to have a very clear picture to capture the ...
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3 votes
2 answers
733 views

Why can I not shoot as sharp as I see on live preview?

I am trying to photograph a piece of jewelry. I have a Canon EO 90D camera with EFS 18-135 lens. I am using a lightbox and a tripod with plenty of light. I zoom to 106mm. I manual focus to get a super ...
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1 vote
1 answer
302 views

Picture gets blurry when zooming in

My Nikon 3400's kit lens(18-55mm) works fine when I take pictures at 18mm. But when I extend lens beyond that, the picture gets blurry(no clarity). Though I can focus on extremely close distances ...
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6 votes
2 answers
534 views

Why am I sometimes having "doubled image" and soft photos with my Tamron 100-400mm

I sometimes get unsharp results out of my Tamron 100-400mm F/4.5-6.3 Di VC USD, with a "doubled image effect", especially visible in the out-of-focus area (bokeh). But the rest of the time, ...
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1 answer
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Need some help with astro photography

I'm just getting into photography and I'm interested in landscape, astro and macro photography. Because of the comet C/2020 F3 (NEOWISE), I tried to make some pictures during the night, but I think ...
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1 vote
1 answer
842 views

What does make a vintage lens not sharp and can we fix it?

Situation I have this Takumar 200mm lens mounted on a Canon 60D with an m42 adapter. I really like the lens because of the bokeh it creates but the photos are so soft. I tried all the f numbers from 3....
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2 answers
109 views

Reduce image sharpness and DPI [closed]

Why does the sharpness of the imag decrease when I increase the DPI of an image?
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11 votes
6 answers
7k views

Do more megapixels mean sharper images?

Do more megapixels mean sharper images? Would a 24 MP camera produce a sharper image than an 18 MP one (given the same lens, settings and scene)?
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3 votes
2 answers
193 views

How to proper focus for sharper images?

For shooting landscape photos, what is better using manual focus or automatic focus? I seen a lot of people who focus with automatic focus then switch to manual focus, is this so the focus doesn't ...
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1 vote
2 answers
107 views

Different focus on different parts of the picture

I have a problem with the camera on my Xiaomi Mi A2. It mainly occurs when I take pictures of things far away. This problem is consistent. I have added a few pictures. You can see in one of the ...
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0 votes
1 answer
168 views

Sony A6000 with Sony E 18-200 lens: images unsharp on the left, in particular at zoom — lens damage?

My photos, taken with a Sony A6000 with a Sony E 18–200 mm lens, are unsharp on the left at moderate zoom and unsharp everywhere off-centre in severe zoom. This effect is present with image ...
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1 vote
1 answer
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What is the optical problems in these test images and what causes them?

As I was recommended in the question How to determine which lenses are good at testing teleconverter quality? I was taking test pictures trying to determine lens/teleconverter quality. No I did not ...
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2 votes
4 answers
284 views

Images Unsharp Or My Criteria Needs To Be Adjusted [duplicate]

I have Nikon D3500 with kit lens 18-55 VR and some other lenses af-p 10-20 among them. As I renewed my interest for photography some time ago, I have some images at the LR scrutiny that were taken ...
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1 vote
2 answers
859 views

Settings to improve dull images

I am using Nikon D5600 with 18-55 mm kit lens. When I take photos of open fields or other landscapes, the color combination comes out dull. I compared it with Canon 1500D photos. Photos from Canon are ...
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2 votes
6 answers
528 views

How to get sharper photos with a kit lens when in low light conditions?

I took my new Nikon D7500 out yesterday and its my first DSLR. I would like to get some thoughts on shooting sharp photos in low light conditions with it. I was shooting after sunset but before ...
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  • 121
0 votes
1 answer
261 views

Optically reduce chromatic aberration - is it worth trying?

I have been using this Tamron SP 180mm 1:1 Macro - F/32 lens to digitize 35mm slides. Unfortunately, the lens' chromatic aberration is quite noticeable, when used at 1:1. I have plenty of strobe light ...
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  • 131
7 votes
10 answers
6k views

Why can't I shoot with a fast shutter speed with my continuous light at max power?

I would like to ensure a sharp focus of my object when shooting overhead (both object and background in focus). However, when shooting in manual at f/8.0 and ISO100 my shutter speed has to be 1/4 for ...
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4 votes
2 answers
506 views

Will a Nikon D810 give me more fine detail than a D610 for macro enlarged shots?

I do a lot of photography that focuses on tiny details usually with marine animals such as coral. I am in need of a camera that produces a photo, that even when enlarged from a macro point, it retains ...
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7 votes
6 answers
5k views

Do I really need a US$1500 rig for crisp sharp photos? [duplicate]

I'm getting into photography and got myself a used Canon 1200D with a Tamron 18-200mm lens. And currently under no circumstance I am able to make a perfectly focused sharp and detailed photo. Or at ...
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1 vote
3 answers
424 views

Is it better to shoot at diffraction limited aperture or sharpest lens aperture?

In the old cameras like Nikon D80 with 10 Megapixel pixel count. The diffraction limited aperture is F/13 but its known that lenses are generally sharpest at the F/8 so it's a no brainer to shoot at F/...
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0 votes
1 answer
834 views

Why are my picture not as sharp when shot RAW as when saved as JPEG [duplicate]

Newbie question here. I shot an image in low light in jpeg format and it's crisp, but when I shoot raw in plain day at 1/125, my image looks blurry most of the time. Unless I max out the sharpness ...
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1 vote
3 answers
254 views

What affects tripod stability?

I have a Vanguard Veo 2 265 CB tripod. I really like it and it has been performing, but lately I am trying to get my pictures as sharp as I can get and I noticed something. It must be trivial to ask,...
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3 answers
705 views

Tamron 100-400 (Canon EF) sharpness

I'm puzzled by how the results that "The Digital Picture" have received while testing the new Tamron 100-400 telephoto zoom lens contrast the positive reviews by the actual users all over the Internet....
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1 vote
2 answers
193 views

Why does grain increase acutance?

The Wikipedia article on acutance claims that a slight amount of noise or grain can increase acutance. Cambridge in Color gives the following demonstration. No noise: With noise, with more acutance: ...
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2 answers
4k views

Why do I get so many unsharp pictures with my Canon 70-200 IS f/2.8?

Please take a look at the picture below. You can see where the focus point was thanks to a LR plugin. But the image is unsharp - again. And yes, I'm sure the dog was standing still enough for 1/250 ...
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1 vote
2 answers
207 views

Is this the limit of the camera image quality or is the subject out of focus?

I'm using the "macro" mode in the Powershot G9X II. The macro mode is simply a shorter focus range, there is no magnification in place, like in aftermarket macro lenses for DSLR's. I've shot many ...
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3 votes
3 answers
568 views

Will upgrading from P900 to Nikon D500 and a 200-400 lens make my bird photographs sharper?

I am using a Nikon P900 and although I love the camera the image quality is not always as sharp as it could be. Also it is just 3 years old and is falling to bits although i do use it daily. As most ...
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2 votes
1 answer
194 views

Long-end softness in a wide-angle lens

I just got a copy of the Tamron AF 20-40mm F2.7-3.5 SP Aspherical IF for my Sony a7 (using the non-AF Sony A/E adapter) over eBay. I'm seeing what seems to me like a surprising degree of softness ...
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8 votes
4 answers
3k views

Why is Nikon 1.4g better when Nikon 1.8g is sharper?

I am new to photography (just 3 to 4 months of experience) and I am looking to buy a new lens (either 35mm or 50mm, but mostly 35mm because I have already decided Sigma 85mm f/1.4 DG HSM Art Lens for ...
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1 vote
3 answers
194 views

How to capture sharp images of multiple objects on a wall?

I need to photograph a wall with multiple paintings with every painting under sharp focus. I believe depth of field doesn't play here as all the objects are at same distance. I tried with higher ...
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6 votes
5 answers
2k views

Can you determine if focus is sharp without diopter adjustment if your sight is imperfect?

I've already encountered this question about wearing glasses as a photographer. A more specific question I have is as follows. If your eyesight is not perfect, or your glasses and/or contact lenses ...
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1 vote
1 answer
145 views

Create a canvas-like style (a blurred effect)

Hi I would like to have a fluffy effect for the details of my image, and I have tried tools such as Sharpen, Blur in Fliter, and Clarity in RAW manipulation, but in vain. The left hand side is the ...
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0 votes
3 answers
554 views

How will a teleconverter affect the sharpness of a lens at a given aperture?

If I have a 200mm f2.8 lens and apply a 2x teleconverter the effective focal length and aperture becomes 400mm and f5.6. However, I am unsure about the effect this has on other aspects, such as image ...
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8 votes
2 answers
2k views

What makes the difference on partially and fully visible moon?

While I'm satisfied (despite the fringe) with shoots from a partially visible moon with a cheap 500 mm lens: 1/100 ISO 100 f/? I cannot understand why the image quality is extremely diminished when ...
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1 vote
1 answer
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Why is the Canon-mount Sigma 24mm F1.4 DG HSM Art sharper in the corner in DxOMark's ratings than Nikon-mount version?

Why is the Sigma 24mm F1.4 DG HSM A lens corner sharpness much better in the Canon version than the Nikon's, according to DxOMark's ratings? Canon: https://www.dxomark.com/Lenses/Sigma/Sigma-24mm-...
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  • 143
0 votes
2 answers
244 views

what technology does Nikon use to reduce moire?

Nikon cameras do incredible job with moire effect even that nikon cameras do not have anti aliasing filter.And i didn't find moire in any situation with my Nikon d7100
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4 votes
1 answer
1k views

Why are test images from my Fujifilm X100F softer than I expect?

I just got a copy of the X100F, and I was really excited to play around with it. But as I've taken a handful of pictures in various settings, I've noticed that the sharpness of the images were not ...
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2 votes
2 answers
882 views

Lack of Focus/Sharpness on Zoom

I have recently taken what I thought were hundreds of amazing pictures of a group of seals on an CA beach - only to find every single picture is clearly out of focus or lacks sharpness. A sample ...
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8 votes
3 answers
2k views

How to avoid the grainy background in sunset picture?

I was taking this picture of the sunset. I used auto focus, but the trees are not really that focused. Also, the red background is grainy. Any tips if I get this opportunity again? I was using a ...
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7 votes
2 answers
430 views

Can using a high resolution sensor and downsampling compensate for a soft lens?

In this question Does super-sampling produce good results? the difference in quality between using a high and low resolution sensor of the same size and then downsampling the high resolution one gives ...
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5 votes
1 answer
124 views

Are focus and resolving power optically equivalent?

Limited "resolving power" or "sharpness" is a problem one can see with many lower-quality lenses, especially with higher-resolution camera bodies. Playing with my cheap 500mm mirror lens, I often get ...
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2 votes
2 answers
457 views

Why do Photoshop, InDesign, Pixelmator Pro, and Mac Pages all "smooth" my digital photos on export to PDF (how achieve best print preparation)?

I am preparing digital photos for printing and performing various test prints for comparison (with a very cooperative print shop). The print shop only accepts PDF, not direct print from raster format ...
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