All Questions

0
votes
3answers
97 views

Where to store scene label information about a photo (e.g., “nature”, “cat”, etc.)?

I want to tag some images. I'm wondering which is the right place in the EXIF to store specific information about the scene. For example: Cat, Nature, etc.
0
votes
2answers
48 views

Are the autofocus parameters independent from the selected case?

The behavior of Canon's AI Servo AF autofocus can be modified by choosing one of six presets, and can be customized further by adjusting the Tracking sensitivity, Acceleration/deceleration tracking ...
0
votes
1answer
23 views

Is the Yongnuo YN968EX-RT compatible with a Panasonic Lumix Gx85 camera?

My first question ever. I am considering buying the Panasonic Lumix GX85 and would like to know if I can use my Yongnuo YN968 EX-RT flash with it. Are they compatible? Will I get TTL with this combo?...
3
votes
3answers
110 views

Coreldraw effect from free programs?

I used to do an effect in CorelDraw that converted an image to a bitmap. The way it did it was group similar colors together into one color chunk giving it a cool effect that looked kind of like this: ...
4
votes
3answers
126 views

What is the purpose of an orange filter that comes with Canon flash?

My Canon (430EX III-RT) flash came with a neutral plastic diffuser and an orange plastic filter. Now, I understand the purpose of the neutral diffuser: it's (obviously) to diffuse the flash, without ...
0
votes
2answers
67 views

conversion from RAW to DNG (Adobe RAW) leads to unwanted crop

I am currently re-designing by photo-workflow and my plan so far is to convert the RAW-files from my Sony camera (which produces Sony's RAW, ARW) to DNG-format (which is Adobe's RAW). I use Adobe's "...
0
votes
0answers
35 views
-3
votes
5answers
135 views

Why different filter thread sizes?

It is well known that different lenses often have different filter thread sizes. Why is this the case? Lens and camera manufacturers have agreed on one (per-brand) standard for attaching the lens to ...
0
votes
1answer
97 views

Can I take pictures on a Canon T6i with no lens fitted?

Currently I am trying James Millar's method of transferring old Super 8 movies by DSLR 1080p video of film in projector gate: https://vimeo.com/20950590 With projector lens still in place, Canon DSLR ...
1
vote
2answers
78 views

How to reduce blur or haze when shooting long distances? [duplicate]

I am new to photography any i am not sure what is the correct settings when shooting long distance landscapes. The photo that I took is pretty blurry/hazy. Is there any specific settings or equipment ...
1
vote
0answers
77 views

Using Nikon PS-4 bellows to copy 35mm negs

I want to digitize my old b&w negs, and have an old PS-4 bellows unit to use on my Nikon D5200, an SLR with a DX format sensor. My PS-4 manual predates DX, and shows a table with lenses from 20mm ...
0
votes
1answer
15 views

How ignore video when import media to Lightroom (not uncheck every time, full ignored)

When I import photos Lightroom import videos too, but how ignore video files or files by extension without press every time "Uncheck videos" at import dialog? Uncheck videos button shown if press alt ...
0
votes
0answers
12 views

Gimp - Average HSV values of selection [migrated]

I want GIMP to calculate the average Hue, Saturation, and Value of a selection. I could color pick several pixels from the desired area and read off the values from the FG/BG Colour tab. This would ...
2
votes
1answer
37 views

View at given print size

What is a good way of viewing an image at the same physical scale as a given print size? E.g. say I want to print an image at 40x60cm. How do I (most easily) display the image so that 1cm on my ...
0
votes
2answers
73 views

Physical button reset Canon M50

I want to know if there's a physical button somewhere on the Canon M50 to reset the device, like many routers have. This is now critical for me, because of my previous question, where many of the ...
1
vote
0answers
21 views

Yongnuo 85 mm on supposedly-cheap-and-good ef - nex adapter like commlite or viltrox iv

Is it combo usable, I mean the lens aperture is not dead and focuses accurately on sony a7 i?
0
votes
0answers
15 views

How do I get the Nikon D850 to reset the directory after focus stacking for subsequent single images?

I have been using the "New Folder" and "Reset File Numbering" options with the focus stacking features of my D850. The sequence of images does go into a new directory as expected. However, once I ...
-1
votes
0answers
42 views

speedlight reccomendations [duplicate]

I shoot mostly nature/wildlife and always with available light. I know nothing about flash and recently purchased my first ever speedlight (ESDDI). I had to return it to Amazon because the menus ...
0
votes
1answer
58 views

There is dirt in my sensor [duplicate]

I just cleaned my sensor with a cloth and when i test the dirt, I saw different dark spots on the image. What should i do? I've tried blowing with blower, but it didn't help.
2
votes
1answer
151 views

Is there a way to produce this “little planet”-type self portrait in a single-exposure?

The BBC News article UK Antarctic meteorite hunt bags large haul shows this ultra wide angle and likely "little planet"-type of self portrait. I can't understand how this effect is produced. While ...
6
votes
1answer
184 views

Antelope Canyon Sunbeams - when are they visible?

I'm planning a trip this summer to Upper Antelope canyon and I've wondered the question about when the sunbeams at Upper Antelope Canyon are visible. It would be terrible to go all the way there and ...
0
votes
4answers
125 views

What does focusing past infinity look like?

Would it nearly instantly become unfocused, or would it be more or less gradual?
1
vote
1answer
45 views

What's the best way to avoid color fringing in shadows using budget gear?

first post! I'm a toy collector and like to take pictures and videos of my collection. I've got a lightbox and turntable from Foldio which is great for my needs because I don't have a lot of space ...
0
votes
0answers
34 views

Why doesn't my Pixel King transmitter activate my Canon flash in “Multi” mode?

I have a question about stroboscopic flash. I'm working with a Canon Mark IV, Canon 600Ex-rt flash, and Pixel King transmitter and receiver. I have played around with the flash on camera and it works ...
1
vote
2answers
110 views

Are there particular limits to camera phone print size, beyond general rules of thumb?

So at time of writing a number of high end phones are available with 24 or even 40 megapixel cameras on them. Assuming good conditions, (good light, still setting, tripod?!) What would be the largest ...
1
vote
0answers
35 views

Why has Adobe DNG converter stopped seeing my raw files?

I’ve been using Adobe DNG converter to convert my Olympus .ORF files and Canon .CR2 files. It was working fine but has been a few weeks since I used it. Today I tried to use it and it’s just not ...
0
votes
1answer
46 views

which speedlight flash is suitable for multiple flash usage (35mm)? [closed]

i'm currently using a pentax k1000 with a vivitar 283 and trying to figure out how to connect flash systems to use multiple speedlights, but unsure about which flashes can do this. only specification ...
2
votes
1answer
63 views

La Sardina - blank film

I have recently bought La Sardina lomography camera and after shooting the film came out blank with some colour stains on it. The film was loaded and rewinded correctly and I don’t really know what to ...
0
votes
0answers
46 views

Codes on back of Photo [duplicate]

How are these codes read? Kodak Paper W30((No. 13AD 155 90 AGFA 03270 BNN3A Is there a list of codes I could refer to?
1
vote
2answers
55 views

Best lens for landscapes/general zoom with Nikon D7200? [closed]

I have been using D7200 for almost 4 years now, got the 18-140mm kit lens along, which i have stopped using since an year now, the image quality was pathetic, lacked sharpness throughout the photo, I ...
2
votes
2answers
439 views

Camera image in pixel to real image in meters size relation [closed]

first post so please be nice. I am doing an image processing project and my problem is now that I would like to know how big my digital image is in the real world. I have: digital image: 336x256 ...
0
votes
2answers
68 views

Batch Compress and Watermark Images?

I am building a website for a client, and he needs some software to be able to add watermarks too, and slightly compress for bandwidth on his website. I'm struggling to find a solution that does both ...
6
votes
1answer
139 views

What is this weird dark spot on my viewfinder that looks like a microorganism?

I recently bought a used Canon 1100D, and I didn't notice this... defect? dirt? chip? crack? dividing organism?! — I don't know what to call it — in the viewfinder until I brought it home. It's ...
0
votes
1answer
57 views

Linear regression to correct the colors of RGB images?

I have several pictures of plants (tif files). Each picture contains a set of Munsell color chips. The "true" RGB values of the Munsell color chips are known. My goal is to correct the colors of the ...
0
votes
1answer
89 views

Lightroom 6: How do I add a lens profile (lcp file)?

I have Lightroom 6 and recently bought a new Tamron 17-35mm f/2.4 OSD lens for a Nikon full frame. I downloaded a recent version of Adobe Camera Raw to get the LCP file for the Tamron lens and I have ...
0
votes
1answer
55 views

Cheapest way to mount umbrella softbox reflector for Speedlight?

I bought 20"*28" Umbrella Softbox Reflector for Speedlight (Model: 6Y19. Details & dimensions), assuming I can just mount it on my light stand. That was a mistake. I need this reflector softbox, ...
1
vote
0answers
47 views

Is it a fungus or something else?

the following picture is from my dad's Konica Hexanon f/1.7. Would you call the white layer a fungus, haze, dust or something different? Thanks
0
votes
2answers
39 views

Canon battery life indicator not working?

I’ve purchased a canon 800D/t7i about 3 weeks ago now, and for the first charge of the battery everything worked well. Now however the battery life indicator seems to just be stuck at full battery at ...
1
vote
1answer
92 views

Can I sell a photo as a Limited Edition print if I have sold it as an open edition in the past?

Can I sell a photo as a Limited Edition print if I have sold it as an open edition in the past? I want to start selling some of my prints as "limited editions". However, some of them that I want to ...
0
votes
1answer
23 views

Can one YN600EX-RT II act as a transmitter only for another YN600EX-RT II?

Can a Yongnuo flash YN600EX-RT II mounted on a Canon 5D Mark iv (or any canon camera for that matter), trigger another YN600EX-RT II mounted on another tripod, without triggering its own flash ? (...
0
votes
1answer
52 views

Nikon d3300 “the option is not available in current settings or in the cameras current state”

I have a good condition Nikon d3300 that randomly started giving me the error "This Card is Not Formatted". Then when I try to format, it says "the option is not available in current settings or in ...
2
votes
4answers
105 views

Pixels and photodiodes

A photodiode is the smallest element of a digital sensor, while a pixel is the smallest piece of information in a digital image. I wonder if the two terms can be used interchangeably or there are some ...
2
votes
2answers
71 views

Film Scanning and Correction

I recently shot and developed my first roll of film, Ilford FP4 in Ilfosol 3. I "scanned" my negatives with my digital camera and self-made light box, following various online tutorials. Then I ...
3
votes
4answers
341 views

Why does color hue change on different exposures?

When shooting with long exposures (multiple to tens of seconds) I noticed that in some cases colors in the resulting photos change hue. This was on Canon EOS 1100D, but I've also seen such a problem ...
1
vote
1answer
29 views

650D and AF chip

Recently bought a PK-EOS ring adaptor for my older Pentax K lenses. Went with one that has an AF confirm chip. Chip causes "Communications error" and locks all camera functions. I've discovered that ...
1
vote
1answer
83 views

Are “moustache” distortions in rectilinear ultrawides the result of a fisheye+pincushion construction?

If I wanted to try and build an ultrawide, I guess I would try building a fisheye first, then try tearing the frame back into shape with a group that introduces pincushion distortion. The kind of "...
2
votes
0answers
37 views

What is the best way to preserve chlorophyll anthotypes?

I'm working on a 19th century photographic process called Anthotype. It basically involves using plant juices that fade when exposed to sunlight. For my light sensitive juice I've choosen concentrated ...
8
votes
5answers
4k views

What type of postprocessing gives the effect of people standing out against a flat-seeming background?

Below are real photographs, I was present when they were shot. The photographs were taken between 12:00 to 14:00 on a slightly overcast day. The photographer may have taken many frames. What ...
0
votes
4answers
124 views

Milky way photography without startrails [duplicate]

I am from sri lanka. I want to photograph milky way. Canon 750D EFS 18-135 lens I know that i should increase aperture & increase iso. What should be the shutter speed for this camera to ...
1
vote
2answers
92 views

What is the theoretical relation between zoom length and guide number for a flash?

The point of a guide number is to specify the relation between aperture number and distance. For zoomable flashes there are still extensive tables considering ISO number and zoom length. The ...

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