All Questions

0
votes
1answer
9 views

Mavic Pro 1 Infinity focus problem

1 Hello everyone, I am very new to flying drones. I have bought a second hand Mavic Pro 1, and it has this strange issue of focusing at night. Whenever I try to focus to infinity to get a broad DoF, ...
0
votes
1answer
52 views

What is the difference between the various image-stabilized Canon 18-55mm lenses? [duplicate]

I'm looking at buying a new 18-55mm lens as the one that came with my 4000D doesn't have image stabilisation, which I really need. It seems like canon have made many EF-S lenses over time that all ...
-1
votes
2answers
102 views

Can you turn a 60mm macro lens into a 100mm macro lens?

I have a Canon EF-S 60mm Macro lens. Can I add an extension tube or teleconverter to emulate a 100mm Macro? If not, is there a solution?
1
vote
2answers
45 views

How do you test/adjust a handheld spotmeter's calibration?

Is there a standard method to test the calibration of a handheld spotmeter? I got a Pentax Digital Spotmeter and I want to figure out if the readings are accurate and, if not, if there a way to ...
4
votes
2answers
111 views

What enables the Canon RF 70-200 f/2.8 to be much smaller than the EF version?

Canon announced the RF 70-200 f/2.8L in February 2019. This is notable for being much smaller than the equivalent EF lens, being perhaps two thirds of the length, yet maintaining the speed of the EF ...
0
votes
1answer
35 views

Can I use a Godox v860 flash with the X1 wireless trigger [on hold]

How do I use a trigger without a receiver? I use godox v860 flash.
2
votes
2answers
76 views

Are typical camera bag materials enough for non weather sealed DSLR in 5 minutes of medium rain?

I have a non weather sealed DSLR (Canon 2000D) along with a bunch of non weather sealed lenses and other equipment. I am for obvious reasons not planning to use the camera outdoors in rain, snow or ...
-1
votes
0answers
63 views

What camera shoulder bag to choose for small DSLR with 2-3 extra lenses and flash? [on hold]

I would like to purchase a camera shoulder bag to fit a small DSLR camera with an attached lens, 2-3 extra lenses and a flash. The collection of lenses I am planning to carry can vary depending on ...
0
votes
0answers
26 views

Lumix GX9 build and weather seal quality as travel camera

I am aware that Panasonic Lumix GX9 is not weather sealed. I would like to use it as travel camera, which means all possible weather factors, also sometimes thrown without cover in backpack hiking ...
0
votes
0answers
30 views

Subject is too Dark error in Nikon D5200

Even in "Sufficient light", I keep getting "Subject is too Dark" error in Nikon D5200. I have tried using diffrent lenses and settings (Aperture/Shutter speed/ISO) but no use. Photos come out ok when ...
-2
votes
1answer
58 views

Choosing a lens for large depth of field and short focal length [on hold]

I designed my own night vision system using a dvd player screen + electronics, 11.1vdc lipo battery, two action camera mounting systems, a 2-7x32 rifle scope, pvc coupler (for eye relief spacing), a ...
0
votes
1answer
29 views

How to change auto-focus point in Auto mode on Fujifilm X-T20?

When I set my Fujifilm to AUTO mode, the focus points area seem to be only at the center of the screen. Is there a way to make this to cover the whole area? So that if my subject is at the edges, it ...
-1
votes
1answer
42 views

What would be the best way to make pictures taken with different cameras to look the same?

I am working on cleaning up an Instagram page and one problem I have come across is that there are a lot of pictures on that page. They come from different cameras, lighting and focuses and I was ...
0
votes
1answer
40 views

Using Darktable, how to batch convert from RAW to another supported format

I've notice on other answers there are ways to use the History Stack in Darktable to batch convert a bunch of RAW images. However, since I really only want to use Darktable to export a lot of RAW ...
1
vote
2answers
37 views

How to achieve the same effect of bouncing against the ceiling without a ceiling?

Bouncing flash against the ceiling is great, adds a lot to a photo. My question is how can I achieve this effect without actually bouncing against the ceiling? I have two umbrellas, magmod sphere and ...
0
votes
1answer
32 views

Export from Lightroom cc15 without original files

Hi I’m new to this community and I was hoping someone could help me. I have Lightroom on an old computer I’d love to export some of the pictures but I have no idea where the originals are. I’m fine ...
0
votes
1answer
27 views

Sirui MT5-C or Manfrotto BeFree GT or Advanced? [on hold]

I am planning to buy a travel tripod. After some researches I narrowed down the choice to 3 models: Sirui MT5-C: Weight:0.98Kg, Size (folded) 32cm, prize 300$, holds up to 5Kg Manfrotto Befree ...
0
votes
1answer
83 views

Use Canon AE-1 lenses on a Sony Alpha a6000 [duplicate]

I have found that my father had an old Canon AE-1 film camera, and I'm about to buy a Sony Alpha a6000 camera. The old AE-1 camera has a good 80mm lens that I'd love to use on my Sony camera, even if ...
3
votes
3answers
367 views

What is “focus distance lower/upper” and how is it different from depth of field?

I have taken two photographs on a Canon crop sensor camera: 18mm f/9 with the following exiftool output (the focus was approximately at 3.5 meters): Focus Distance Upper : 5.27 m Focus ...
0
votes
0answers
31 views

autofocus point not visible canon EOS m50

Earlier the focus points would show red square on preview mode. But I am not sure I juggled with some settings, I am unable to see the focus square now. Still the focus point is enable in my preview ...
0
votes
2answers
22 views

darktable-cli fails because of locked database file

I'm using darktable-cli to export photos from my library. I started to get an error with the latest version(2.6.1). It's a segmentation fault with error [init] the database lock file contains a pid ...
-5
votes
1answer
90 views

Why am I not getting the expected shutter count from my Nikon cameras? [on hold]

I have used Nikons for many years professionally. Never abused, but in the press they did work hard. However since digital, things changed. A D2X is still with me, but with a very low shutter count. ...
12
votes
2answers
154 views

At what shutter speeds is mirror lock-up worthwhile?

Exposition I know what mirror lock-up is and what it's good for, but I'm curious about the range of shutter speeds where it provides a real benefit. A little background I use a nice, sturdy tripod ...
2
votes
1answer
61 views

How to enter Debug Mode on a Pentax DSLR?

Pentax DSLR cameras, like the K20D, K-7, K-5, K-3, K-1, other others, have a service mode, also called Debug Mode, that requires special steps to access. In that mode, some hidden settings can be ...
-3
votes
0answers
65 views

Microcamera long range [on hold]

If microcam- miniature camera is to capture text about an inch height from 4-5 meters away,if the cam does not have optical zoom can you make up for it with higher photo/video resolution and ...
0
votes
0answers
8 views

Lightroom Print Module No image

Lightroom print module does not display the selected image. Only printer name and image name are shown on a gray background?
0
votes
3answers
51 views

Is a Yongnuo YN600EX-RT II speedlight overkill for real estate lighting?

I have a typical newbie question. I've done HDR for a couple of years now and I see its limitations, so I'm ready to start using flash. I do real estate photography with the Canon EF-S 10-18mm lens ...
0
votes
0answers
65 views

Difficulty shooting in high ISO with my Canon 5D Mark II

While trying to shooting at 2500 ISO in a dark music jam, when I push the shutter it just stays open, the plus/minus exposure dial through the lens flips to far left, and I have to change the setting ...
-1
votes
2answers
69 views

Are any good flash diffusers available apart from DIY paper one? [on hold]

I built a homemade flash diffuser from paper: It diffuses the flash, while at the same time directing much of it to the direction of the subject. Of course, some flash power is wasted by lighting up ...
7
votes
3answers
1k views

Will a pinhole camera work with instant film?

I am making a pinhole camera for a school science fair. Is it possible to use Instax Mini Film instead of the long process of developing photo paper? If so, would I use the same design, and just swap ...
0
votes
1answer
34 views

How to render only cut out area of DNG-file using dcraw?

I used Camera Raw 8 to cut out an area of a DNG-file and saved the cropped image as a DNG-file again. I want to convert the cropped DNG-file into different TIF-files with different color profiles and ...
0
votes
2answers
26 views

Proper formatting of Subject Tag in XMP

My intention is to assign tags to each image based on the content in the image.For example This image can be be assigned tags Tulips,Flower etc So can i assign subject like tulips,flower and so on ...
-5
votes
1answer
75 views

Does the ring on “gold ring” Nikkor lenses contain any real gold?

I noticed that the "gold ring" on certain Tokina and older Sigma lenses is actually a thin strip of gold-colored sticker. I just picked up my gold ring Nikkor and noticed that the "gold ring" seems ...
2
votes
1answer
26 views

How do you remove a halo from a sunset picture in Aurora HDR?

I'm trying to make an HDR picture from a sunset taken from a boat. Using the typical settings, I'm getting a sun that looks like this: How do I fix it?
0
votes
0answers
9 views

canon 4000D YN560 IV flash with RF605C trigger

I want to know if canon 4000D supports YN560 IV flash with RF605C trigger? if yes how can I configure it?
1
vote
1answer
43 views

What lenses other than MD can I use with a Minolta XG-7 camera with an adapter?

I recently bought a Minolta xg-7 camera at a thrift store. The store only had the body available but it was so cheap that I thought I could by a lens separately. I have found a few MD mount lenses ...
1
vote
3answers
145 views

Why do DSLM designs almost never shift the sensor plane all the way back to save on thickness?

A common problem with mirrorless designs is that long, especially adapted or output-telecentric designs, still stick out far more than they would eg on a small film SLR or rangefinder. One obvious ...
0
votes
0answers
11 views

Why does the GigaPan Epic Pro sometimes continue without firing, using the Nikon P1000?

I'm a long time GigaPan user, and recently got the CoolPix P1000. The GigaPan head can definitely drive the P1000 and issue the shutter commands, but for some reason I'm trying to nail down, it ...
2
votes
3answers
126 views

Why would a camera change colors on the image when producing JPEGs?

There's a room with windows closed by curtains, it's night outside and the only light source is a set of LED filament lamps inside the room. Lamps are designed to have 2200K color temperature to have "...
4
votes
4answers
508 views

What features to consider when selecting a ring flash?

I have a Nikon d7200 camera and managed to get my hands on Tamron 90mm f2.8 macro lens. While trying to take some shots at 1:1, I found lighting a big issue if I am stopping my lens down. I was ...
0
votes
0answers
71 views

My Camera won't take pictures in Manual Mode (any of them) until I turn it off

I'm taking this photography course and the guy wants me to take pictures in manual mode. Problem is my camera doesn't want to do that until I turn it off. Now, I can't tell if the picture sucks ...
3
votes
1answer
85 views

What caused this horizontal white line scans from film developed at a local shop?

I'm brand new to film photography and I just took my first rolls to a local shop today. The first half of the roll had these horizontal lines at the top and the second half was fine. Is this a film ...
3
votes
1answer
40 views

Rainbow flare effect on Industar 50-2

I am reproducibly getting the kind of rainbow-streak flare seen in the attached image on my copy of the Industar 50-2 (a russian 50mm f3.5 tessar-ish M42 pancake). The pattern does rotate when ...
1
vote
3answers
79 views

Canon EF 200mm f/2.8L II USM or Canon EF-S 18-200mm f/3.5-5.6 IS?

I need a recommendation. I want to buy a telephoto lens and I don't know a lot about photography. I am looking at these 2 options: Canon EF 200mm f/2.8L II USM: Fixed lens. Fast (f/2.8). Effective ...
1
vote
8answers
182 views

Does it make sense to buy a Sigma Art f1.4 for a crop sensor body?

Im currently shooting on a Nikon D5300 with a 35mm f1.8 and I looking for a quality telephoto portraiture lens. I'm interested in the Sigma Art 85mm f1.4 DG HSM. I saw the lens is versatile and my ...
5
votes
2answers
172 views

What was Bob Parent's “Signature Technique,” and how is it visible in this (linked) photo?

The New York Times recently ran an article called Is This the Greatest Photo in Jazz History? (paywall (sorry), and a mildly-NSFW mural painting visible in the photo) about a famous photo, taken by ...
0
votes
0answers
36 views

Hugin Panorama upside down

I actually use the commandline for everything, very similar to this workflow. https://wiki.panotools.org/Hugin_Panorama_Workflow My source images are 12 images, 4 stacks of 3 different exposure ...
1
vote
2answers
81 views

What is the formula to calculate aperture (diaphragme in french)?

Let's say I have these data for my camera : t : Exposure time in seconds ("temps de pose" in french) C : Incident-light meter calibration constant ("constante lumière incidente" in french) S : ISO ...
0
votes
1answer
70 views

What kind of bellows should I use for 5x magnification with a 100mm lens?

I have a Canon 1200D and I have a Tokina f2.8 100mm macro lens. I would like to achieve up to 5x magnification. Which bellows should I use?
-3
votes
0answers
84 views

Does leaving a photo file open on MacBook pro, then logging out, damage the photo? [closed]

I opened a photo file, then switched the user on MacBook. When I logged back in, the photo was still open. Does this degrade the quality of the photo?

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