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
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 ...
3
votes
3answers
264 views

Is there a digital camera that is able to save people bounding boxes?

I am looking for digital cameras that are able to recognize faces(automatically or by user input) and save those as tags in XMP using either Microsoft Photo 1.2 Schema or Metadata Working Group - ...
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 ...
0
votes
1answer
65 views

How can I manually set EV in Lightroom to take a neutral density filter into account when merging photos?

I shoot a couple of Images and try to merge them with Lightroom. Since a few (but not all) of the shoots were taken with an ND-Filter. I need to somehow tweak the EV value of the Photos I took with ...
3
votes
3answers
366 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 ...
1
vote
2answers
118 views

How to choose focal length (35/40/50) for flower and plant product photography?

I own a Nikon D3500. I want to buy a lens so I can take photos of products (Flowers - Bouquets - Plants) to upload to my e-shop. I am working on a flower shop. I already have a white studio 90cm X ...
-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 ...
-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 ...
4
votes
2answers
862 views

What's causing this white smudge in the middle of the photo?

Specifically, this photo. . This was taken with a Canon 1000D, with a 1985-ish Admiral/Panagor 55-225mm manual telephoto/macro that I picked up for cheap at a charity shop; it's a Minolta mount, so ...
6
votes
0answers
140 views
+200

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
6answers
15k views

How does D7100 bracketing work?

I use Raw + JPEG basic and aperture priority to shoot photos. I tried to turn on AE bracketing or ADL bracketing with 3 or 5 frames. But I never see the camera produced 3 or 5 images when I browse ...
11
votes
4answers
2k views

Where does this reflection come from in a long exposure shot?

Using a long (10 second) exposure I found I was getting an odd "reflection" in the picture, where the brightest object leaves a residue in the opposite part of the frame. You can see it here: (...
-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
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
4answers
10k views

Why is my external flash (speedlight) not working on-camera?

I would like to use external flash with my Olympus OM-D E-M10 (mark I). It seems, however, that flash is simply not working with my camera. I have tried to set flash in camera to fill-in and fully ...
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 ...
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 ...
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 ...
3
votes
6answers
47k views

How do I fix a stuck zoom ring on Nikon 18-55mm AF-S?

I have a Nikon D3100. The zoom ring on the lens that came with the camera is stuck. The lens is a AF-S NIKKOR DX, 18-55mm. Is is broken, or just stuck and is there anything I can do "unstick" it. ...
3
votes
2answers
3k views

Is there a keyboard shortcut for 4x6 crop in Lightroom 4, or way to set a default aspect ratio?

I spend a lot of time cropping photos into the 4x6 aspect ratio in order for friends and family to get prints. When I switch to the crop tool, Lightroom always starts with an unlocked, "Original" ...
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 ...
-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 ...
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 ...
3
votes
2answers
8k views

What is the difference between the Canon 55-250 IS II and 55-250 IS STM lenses?

I am a beginner in DSLR, and would like to purchase another lens other than the kit lens (18-55mm STM) that came with my Rebel T5i/D700. After much googling, and reading of blogs, I have decided to ...
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 "...
-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 ...
10
votes
4answers
19k views

What are the merits of using a particular image file format?

If I edit an image file using some application like GIMP, Photoshop or MS Paint, while saving I will be asked to select the required file-format. There are different formats available, the common ones ...
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
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 ...
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 ...
1
vote
1answer
23 views

Yongnuo YN720: Can I use master and slave without a trigger attached?

I bought two flash YN720 with the understanding that I didn't need a trigger to fire both master and slave flashes. Not sure how to set them up? I have two RF 630N triggers but I would rather not use ...
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 ...
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 ...
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 ...
1
vote
1answer
4k views

How to build your own External Power Supply for Canon Powershot G7?

I was reading CHDK forums and was trying to find how to build a DIY external power for my Canon powershot g7. I can't find the ACK DC20 where I live. Anybody have any guide for this?
2
votes
4answers
347 views

Is there a technical reason to go from RAW to an 8 bit TIFF?

I was watching a video about frequency separation techniques for skin retouching in Photoshop. The subject is irrelevant, but I mention it because this comes from a decent source and a high-end ...
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 ...
14
votes
3answers
2k views

How can I think logically about getting correct exposure with flash?

I recently got a new off-camera flash (Nikon SB-700), and I'm having trouble thinking about the variables that go into proper exposure. For example, without flash, I have a little mental decision ...
24
votes
5answers
14k views

Is there an equivalent to Adobe's “Vibrance” in Gimp?

See: What's the difference between saturation and vibrance in Lightroom? In a nutshell, Adobe's Vibrance is a "smart" color adjustment that increases saturation selectively, leaving skin tones ...
4
votes
1answer
176 views

How do I fix the color in this photo using Darktable to match the out-of-camera JPEG?

I'm trying to learn to use Darktable effectively. That's why over the weekend, in the middle of a massive cleaning and organizing task at home, I took a minute to shoot this compositional disaster of ...
-1
votes
1answer
57 views

How to recover corrupted photo files? [on hold]

All picture files are corrupted stored in Nash drive. Getting the below message when try to open in photo viewer. How to recover the photos? There are lots of photos old and recent. Windows Photo ...
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 ...
-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. ...
187
votes
15answers
123k views

What do all those cryptic number and letter codes in a lens name mean?

When looking at a lens name, there are a lot acronyms describing its features (often specific to the manufacturer). Examples, Nikon: Nikon AF-S DX 16-85mm VR f/3.5-5.6G IF-ED Nikon AF-I 600mm f/4D ...
3
votes
5answers
857 views

Should I save the original boxes for lenses and cameras?

I have a lot of original boxes for cameras and lenses. In fact, I have a closet and the entire bottom half of it is empty original boxes from photographic equipment. I have been photographing for 30 ...

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