All Questions
26,771
questions
1
vote
3
answers
144
views
how to get zoomed in images of tiny seeds with phone camera?
I have some tiny seeds on a plate that I want to take pictures of, and I want them to appear big in pictures so I can identify them at the same time, covering the whole or at least half of the plate. ...
- 11
1
vote
0
answers
51
views
Nikon D3300 connect to smartphone
I own a Nikon D3300 and I want to use an external monitor but without spending too much money. D3300 doesn't provide WiFi capability. So, i found out that I can use my phone with an otg cable and ...
- 11
3
votes
3
answers
187
views
Home made lens system for imaging 3mm wide object
I want to take a picture of 3x3mm object so that only the object is visible, i.e. it fills the whole image. I have a small machine vision camera with ...
- 31
0
votes
3
answers
147
views
Can multiple exposures be corrected?
I digitized a double exposure film negative taken 50 years ago. (It is a .tiff file)
Is it possible to remove the superimposed images using Phtotoshop or Python?
enter image description here
- 1
0
votes
1
answer
57
views
Migrate from Apple Photos to darktable
all. Is there already a way to migrate from Apple Photos to darktable? I know it's possible to read from an Apple Photos database with AppleScript and that Lua has a Lua scripting API, so if there isn'...
- 101
0
votes
5
answers
168
views
Landscape lens vs portrait lens
How is a landscape lens different from a portrait lens optically. I believe all wide angle lenses are primarily landscape lenses and all in one is the kit lens. Is the 50mm lens primarily a portrait ...
- 209
0
votes
2
answers
80
views
Why is my Nikon D5100's pop-up flash only lighting parts (top/bottom) of the frame?
I'm using a Nikon D5100 with a shutter count pf only around 7k. Now when I use it with the pop-up flash, only the thin top part or thin bottom part is flashed, the rest would be black or dark.
I tried ...
0
votes
1
answer
61
views
Pixel 6 Pro Very Strange Artifacts
This is my friends old photo, and many are convinced that this is a ghost, hehe, but you can clearly see curved bars that make up the image. I've spent way too long trying to find the answer, can any ...
- 1
-1
votes
3
answers
116
views
Canon 50mm f1.8 VS EF-M 15-45 mm
How much of a difference in IQ of the nifty-fifty against the EOS M 15-45mm kit lens?
I personally have found the kit lens sharp and image looks a bit modern (or not? compared to EF 100-300mm I owned)....
- 137
0
votes
1
answer
67
views
What are these straight bright lines in the negative and scans?
I ran a test roll of Fujicolor C200 through a newly acquired Voigtländer Vito II.
Upon closer inspection, all the photos have bright straight lines (take a look at the top 20% of the picture where the ...
- 101
1
vote
2
answers
823
views
How much noise does Getty Images tolerate for a contributor application?
I captured some decently pleasing pictures (when zoomed out) using Canon M50 + kit lens during the time of sunset. The image, when not zoomed in 100% looks well, but when zoomed in 100%, it looks ...
- 137
0
votes
0
answers
29
views
Hotshoe flash options for a canon 4000d
I have the canon 4000d, wonder what flash would be available for it. In the hotshoe? It has a built in flash but it does not automatically pop up.
- 1
1
vote
2
answers
109
views
Vanishing Points and One-Point Perspective in Photography/Cinematography
To my understanding one-point perspective is produced when the parallel lines (depth) in a scene are orthogonal to the image plane and the other two dimensions height and width are both parallel to ...
- 133
1
vote
3
answers
178
views
Why has no phone manufacturer tried a lens turret system yet?
Early 35mm film cameras, esp. movie ones, used lens turrets, ie. a ring with 3 or more pre-mounted lenses that you would rotate to switch between lenses. I'm talking about this:
I do wonder - why not ...
0
votes
1
answer
61
views
120mm with 35cm minimum focus distance for Macro? [closed]
Is 120mm focal length with 35cm minimum focus distance good/close enough for macro insect photography?
- 137
0
votes
1
answer
60
views
Why don't my Fujifilm X-A20 autofocus after putting back on original lens?
I have a Fujifilm X-A20, but I removed its original lens around 4 years ago and have been using a meike lens I bought at the same time. Today I decided to put back the original lens to use it but I ...
0
votes
0
answers
58
views
Is converting CR3 raw images (Canon EOS R6) to adobes DNG for usage in Photoshop CS6 lossless and otherwise unobjectionable
I replaced my old camera with CR2 raw format a while ago with a new one (Canon EOS R6) with CR3. As soon as I shot the first pictures with it I had the problem that they could not be opened in ...
- 101
0
votes
4
answers
3k
views
Why am I missing photos?
I got my photos from my disposable cameras and I’m missing about 18 of them out of 52. I was just wondering if I could get the rest of them back.
- 17
1
vote
1
answer
63
views
Can I use a CFast 1 card reader to read a CFast 2.0 memory card?
CFast 1 uses the SATA II interface while CFast 2.0 uses the new(er) SATA III interface. SATA III is backwards compatible with SATA II but does that mean I can use a CFast 1 card reader to read a CFast ...
- 11
0
votes
0
answers
23
views
For what case is "Image sizing" in Lightroom relevant? [duplicate]
Prerequisite:
A digital picture is in my opinion only a sequence of pixels. e.g. in the .png format (simply explained) for each pixel, the color value and its position is stored.
So how big a digital ...
- 1
-1
votes
3
answers
155
views
Where are Adobe Lightroom (not Classic) edits stored?
I want to ensure my Lightroom edits are backed up. From what I understand, in Lightroom "Classic," a "catalog" was used to store edits. This notion seems to have been deprecated at ...
- 107
0
votes
1
answer
117
views
Is this a double exposure?
My wife took this pic of some plants using her Samsung Galaxy phone, and was surprised when these two bees showed on the photo. Not surprised at bees being near plants of course. But what's puzzling ...
1
vote
3
answers
143
views
Difference between Spectral Sensitivity and Spectral Dye Density, and how are they linked?
I read on a paper from kodak the differences between the two, but I'm still not sure if I understand it correctly. I'm pretty certain I understand the spectral sensitivity of film, as it is pretty ...
- 133
-1
votes
1
answer
60
views
What are some abbreviations used in the photography industry? [duplicate]
For example, DCIM is short for Digital Camera Images.
When typing the name of something into a search engine it is useful for the computer to know that the strings of text ...
1
vote
1
answer
145
views
How to make CDs not reflect?
I’m having a party and my friend suggested to have a CD backdrop wall for photos. My concern is that if photos are taken with flash all the CDs would reflect in the pictures. Anyone have experience ...
- 11
1
vote
4
answers
102
views
What glue should I use to fix a broken USB port cover on a Canon G7X?
Someone tried to open the USB port cover on my Canon G7X from the wrong side, and partially separated the two pieces:
I also made a short videos that better show the properties of the materials:
...
- 131
0
votes
1
answer
76
views
What should I consider when selecting radio flash triggers for legacy flashes?
I own a Nikon Z6 II. Now I'm looking for radio triggers to use my SB-600/SB-800 flashes off-camera. What features should I be looking for and what factors should I be considering?
I think I need ...
0
votes
0
answers
72
views
What to use when signing print on metal
I saw an old thread about using a BIC Mark-It to sign print on metal. Then I saw a set of BIC Mark-ITs on amazon but when it was delivered, the label said BIC intensity. Does anyone know if BIC Mark-...
- 1
0
votes
1
answer
94
views
Wrapping my head around the signal to noise ratio
To my knowledge the signal to noise ratio when talking about shot noise, is defined as the mean signal divided by the standard deviation. In the Poisson distribution, which can be used to model shot ...
- 133
4
votes
1
answer
1k
views
Who said "when I am changing film rolls there is no photograph"?
I might have gotten the quote wrong, because I cannot find it anywhere online, but it is something along the lines...
The context is that a famous photographer was asked how he felt about the photos ...
- 1,735
1
vote
0
answers
92
views
I also have a camera tripod that I am intrigued with. I can not find anything on line about it or the brand. I need some help plz. I have some picture [closed]
Can anyone help me identify this tripod. I believe it was used for photography of still images and people at a photography shop. Also does it hold any value?
- 11
1
vote
0
answers
31
views
Can I Automatically append/suffix an image file name with the contents of the 'Tag' meta data?
I hope you can help. I am a complete amateur and don't understand anything about scripts and what not. I have all my photos tagged - places, people etc. using the 'Tags' metadata field. I would like ...
- 11
0
votes
3
answers
147
views
Canon EF 40mm f2.8 consistently sharp across the frame?
Does the EF 40mm f/2.8 lens give sharpness not just at the center but also to the periphery most of the time..? In comparison with the 50mm f/1.8 STM which only very sharp at the center..?
I have done ...
- 137
0
votes
1
answer
80
views
GoPro footage from App to Computer?
I have a GoPro Hero 11, and have saved lots of photos and videos to the Cloud, and the Quik App on my phone.
How can I get the photos/videos from the Quik App to my computer? The videos are stored in ...
- 101
0
votes
2
answers
56
views
Lightroom Classic synchronize folder fails to import metadata
I have Lightroom Classic 12.4 on my laptop and desktop, and store all my photos on my Synology NAS. I edit my photos locally on my laptop using Lightroom Classic, then (when I'm home) I use Lightroom ...
- 1
1
vote
1
answer
100
views
Does my new Helios 44m have fungus?
I just bought a new Zenit 122 camera with helios 44m-6 lens. The lens has something inside and I'm afraid if it's fungus and could infect my other lenses
- 125
3
votes
2
answers
74
views
How can I properly store multiple prints up to 60x90 cm at home?
Over time I have various prints from my photos, from 30x40 cm up to 60x90 cm. Mostly chemical prints from online good quality photo labs, but some are fine art prints, so inkjet (I think).
They always ...
- 1,329
-1
votes
1
answer
96
views
Is it possible to find year of manufacturing for Canon 77D camera from its serial number?
Planning to buy a Canon 77D from mpb.de website. I know the serial number of camera. Can I approximately find the year of manufacturing from the serial number?
0
votes
2
answers
60
views
Relation between half angle of numerical aperture and angle of view
The numerical aperture is defined as
NA = n sin(θ)
Where θ is the half-angle.
For a lens consisting of multiple elements, is there any relationship between θ and the angle of view of the lens? Can ...
- 549
0
votes
1
answer
39
views
DOF formula vs the simplified DOF formula
I was calculating the theoretical difference in the change of the DOF (depth of field), between a frame achieved on a 25mm signature prime and an "identical frame" achieved by using a 75mm ...
- 133
1
vote
2
answers
69
views
How to check for excessive light from faculae on the dwarf planet Ceres?
The Dawn space probe took a lot of photos of the dwarf planet Ceres in the asteroid belt, and discovered the strange looking faculae (white spots) in the Occator crater that seem to glow in the photos,...
- 111
0
votes
2
answers
81
views
How can I digitize very dark film?
A while ago I had the chance to try out analog photography. Due to unknown reasons in development (likely a problem with one of the liquids) the resulting film negatives are very dark. That is, if I ...
- 1,608
11
votes
3
answers
2k
views
70cm perfect focus depth of field for product photography
Please look at this photo below, on the left is the full product, and on the right is the 100% crop of the same photo.
The guitar is around 100cm tall. If you incline by around 45°, you have about ...
- 313
0
votes
2
answers
57
views
Feasibility of simulating an Imagon lens with depth maps?
The Imagon lens gets its soft focus by being uncorrected for spherical aberration, so the light rays from the outer part of the lens focus at a different spot then those from the center. The degree of ...
0
votes
1
answer
63
views
Pentax ME every other roll is blank, is this one too?
Every other roll I’ve used on my Pentax ME this year has come out blank. Current situation is I got to 36 but no resistance to signify roll is finished. Instead, I am able to keep taking pictures and ...
- 1
0
votes
0
answers
98
views
Testing out an old camera - why have the scans come out like this?
Found an old Goldeck medium format camera which I tested with a couple of rolls of film. Nearly all of the scans have come out this way even using different focus lengths. The last shot of the second ...
- 1
10
votes
2
answers
3k
views
How can I take good photos of stars out of a cockpit window using the Samsung 21 ultra?
I am an airline pilot and as the winter is coming and we get nice clear nights I am seeing masses of stars out the flight deck windows. At night we have dim lighting in the flight deck and when I try ...
- 201
0
votes
2
answers
65
views
Battery care and time resets?
In the past, I used to always leave one battery in my cameras.
I have a set of photography and videos cameras including some Canon, Panasonic and Sony.
I currently use them every few weeks, sometimes ...
- 253
-4
votes
1
answer
109
views
What is a .webp file?
I am accustomed to using old file formats. For example,
.JPEG
.BMP
.GIF
Beginning in the ...
1
vote
2
answers
150
views
Grey circles in the background in photos
All my photos contain grey circles which is especially noticable on light background (e.g. sky). I don't know what is the name of this specific artefact and what is connected to (lens? camera?). So ...
- 13
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