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0
votes
0answers
4 views

What is the meaning of the distance parameter for line control points?

After fine-tuning control points in Hugin the distance parameter indicates the correlation of two control points in different images and is a value between 0 and 1. However, line control points ...
0
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0answers
4 views

How to use Hugin straight line control points?

I'm in the process of stitching a very badly shot panorama so I'm placing control points and lines by hand in Hugin. In the documentation I found out that you can indicate straight features, using ...
2
votes
0answers
22 views

What are *rails* for?

I've seen rail systems for sale, and a remark from someone wanting to get a rail system. What is the purpose(s) of that? Is a focusing rail for macro a different usage of the term (same as a focusing ...
1
vote
1answer
17 views

Where to announce or release 'opensource' photos

There are many questions on where to release photos for sale or copyright information. I have taken some photos that are not world class, but I think useful for some people. I have been working on a ...
0
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0answers
38 views

Does the lens I just bought have a fungus?

I bought a used Sigma lens on ebay for my back up camera and it was said to be in "mint" condition. I got it today and look it out of the box to look at it and I was horrified to see that the front ...
0
votes
1answer
42 views

Thinking of buying a canon 550D - few questions

I'm thinking of buying a canon 550D second hand. I have a few quesitons: 1) If I buy lenses for this camera, will they work with ALL other canon DSLRs? 2) What should I look out for when buying ...
0
votes
1answer
36 views

How can I get good motion shots (long exposure) of the sea in daylight?

I have tried using my Nikon D5200 in aperture mode with a standard 50mm F1.8 lens at F16 with 2 filters, a Hoya circular Polariser + a ND4. I just can't get the shutter speed slow enough in fairly ...
0
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0answers
17 views

Old Yashica Flash with Nikon D3200

I have a Nikon D3200 and an old Yahica Branded Flash that came with an old Zenit ET. I googled for the instructions for using old flash with new cameras and found out that the excessive voltages could ...
0
votes
2answers
38 views

Can I calculate the diameter of a lens from its focal length? [on hold]

With a 50mm focal length lens, is there a way to mathematically calculate calculate the diameter?
2
votes
2answers
51 views

Can I use Canon lenses on a Nikon dSLR?

I have Canon lenses and would like to purchase an adapter to use them on the D3200? Is there one available? If so name and model would be appericated. I understand that I will have to shoot on manual ...
4
votes
3answers
178 views

Where is a camera's preview image stored, when shooting in RAW?

When you take pictures in RAW, the camera stores a preview image (possibly jpeg) that it shown on the screen using white balance and other adjustments set in the camera. Where is this information ...
0
votes
1answer
31 views

Off-camera flash bracket - flash position

Why do almost every flash bracket users prefer an "above camera" flash position? I am a studio/softbox guy and usually don't use bare flashes. Recently I tried to use flashes on top and this looks ...
1
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0answers
46 views

Timelapse video, pictures taken over a year. Sky flashing

I have taken pictures for a year now to show the different weather and the different seasons, the problem is that, When I tried to put all the pictures together for a video, the result is very ...
0
votes
1answer
24 views

How do I import an iPhoto library into Lightroom, keeping adjustments intact?

I’m using Lightroom 5.7 on OS X. Last night I imported my iPhoto library using Lightroom’s “File > Plug-in Extras > Import from iPhoto Library…” command. The photos all seem to have been imported, but ...
3
votes
0answers
45 views

Is there a standard vocabulary for posing?

I've been looking for a definitive catalog of named poses. Catalogs consisting mainly of unlabeled photos are easy to come by. "1,001 Poses for the Professional Photographer," kind of thing. This ...
3
votes
2answers
67 views

Nikkor 70-200 2.8 VRII - Does Autofocus <5m really work?

some days ago I daring duck had approached while I was taking photos of her and her friends in a pond. I was testing my new 70-200 2.8 VRII and I was a bit worried about the autofocus while working ...
0
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1answer
67 views

How safe is it to photograph sunset or sunrise? [duplicate]

I took the following photographs of sunset at beach. I know that photographing sun could damage the camera or even eyes, but the intensity of the sun light at the time I captured it was so weak that I ...
0
votes
1answer
95 views

How to shoot a 220 yard photo with an 18-135mm lens

I recently bought a Canon T4i with the 18-135mm lens. I am interested in shooting some shots of a pair of eagles that are 200 yards behind my house. I am unable to zoom in clearly to make them fill ...
0
votes
1answer
82 views

Will my photo look good as a canvas?

I am planning on printing this photo as a cavas, but i'm worried that the photo does not have enough contrast to look good when printed on canvas. Any coments on if you think it will suit canvas or ...
3
votes
0answers
50 views

Calculate angle/field of view from 2D image

I want to calculate the angle of view (or field of view) from a photograph, without knowing anything about the camera (or lens). Please have a look at this example. It is assumed the angle between ...
2
votes
1answer
114 views

Will a charger for Canon 60D batteries work on 40D batteries?

I know that the batteries for 60D and 40D are not the same, but is the charger compatible?
2
votes
2answers
67 views

applying random instagram type filters to a bunch of photos

I need to apply random instagram-style filters to 100 photos. It doesn't matter what filters are used, I don't need to look at each photo. It's for a christmas present photo board. Any suggestions of ...
1
vote
0answers
23 views

How much recording time at 1080p30 on a 32GB card on a GoPro Hero (1)? [migrated]

Is there a generic data recording rate for the different capture options on GoPro Heroes? I'm trying to determine what size of SD card I should buy for my GoPro and I'd like to get an approximation. ...
0
votes
1answer
89 views

Photography in public places: Is it allowed or needs permission [duplicate]

So for example in a mall, Can I take pictures of people without their permission? Does that depend on wether they notice I take pictures or not? Also in Cafes and streets...all public places, I am not ...
8
votes
1answer
67 views

Why does L*=0 not correspond to black in the L*a*b* color space?

According to two sources I found, in the CIELAB LAB colorspace a value of L*=0 corresponds to black. Quoting Wikipedia: The three coordinates of CIELAB represent the lightness of the color (L* = 0 ...
0
votes
4answers
152 views

How do I take a “projector output” photo, showing the beam from my car's headlights?

Auto enthusiasts have a thing called a "Projector Output" photo, and its samples are something like this: mostly lights of the cars on a wall at night: And here is a sample shot I did: At full ...
0
votes
2answers
46 views

How to adjust colours displayed on MacBook Pro?

I'm trying to print photos from Aperture on my MacBook Pro (Retina, Mid 2012) via commercial printers. 4 different printers have consistently printed my photos looking more green than they look on ...
0
votes
4answers
100 views

What is the photography term for blurred / dragged lights?

What is the photography term for blurred / dragged lights? Hare are two quick examples from my phone: Would this be considered bokeh, or does a term even exist for this?
0
votes
2answers
199 views

So my iPhone 6 camera lens is as wide as my full frame 35mm DSLR lens?

I am trying to understand what is the deal with "full-frame" and what difference it makes, so did a silly test: I sat at my bed and aligned the iPhone 6 camera with the door of the room and took a ...
2
votes
0answers
107 views

Half of the picture is dark

When I take a picture with my Canon Rebel T3, half of the picture is dark. What is wrong. Where would be a good place to start troubleshooting?
-4
votes
1answer
108 views

Why do digital cameras not have an iso rating? [duplicate]

With conventional cameras your camera had a maximum shutter speed ( typically 1600 ), and the film you used had an ISO speed rating at which it was meant to be able to get a proper exposure under ...
0
votes
2answers
40 views

How can I print a 4x6 image to 4x6 photo paper with a 1/4" border?

I have a very simple task that I can't find a good solution for. I need to print a 4x6 photo image at exactly 3.5" x 5.5" with a 1/4" symmetrical border, with no cropping of the image whatsoever. From ...
0
votes
1answer
34 views

How can I use a manual-focus Minolta MC Rokkor-PF 55mm SLR lens on a four-thirds system?

I have few questions. I'm using a four-thirds system (an Olympus E-410) If I use a Minolta MC Rokkor-PF 55mm f/1.7 prime lens: Can I use this lens with a Minolta MD/MC adapter? Will I lose auto ...
35
votes
7answers
7k views

Do professionals really never use a 24-70 lens?

I was reading lens reviews on the Rockwell site — mostly because it came up as first result in Google search — and he was saying professionals don't need and don't use mid-range zoom lenses like 24-70 ...
1
vote
0answers
17 views

Does the Nikon EH-5a AC Adapter also charge the battery

On "older" Nikons like the D50, D90... that have the DC IN port, when an EH-5a AC Adapter is connected, does it JUST power the camera, or does it also charge the battery? I haven't been able to find ...
2
votes
1answer
52 views

Can I charge the battery inside a Nikon D90 through the camera's USB port?

I have to take some pictures, and brought my camera along. But the battery is empty, and it turns I have neither a second battery nor a charger. I have a USB cable and access to a computer. If I ...
3
votes
0answers
71 views

Horizontal artifacts in Lightroom after import

I have some old photos on the SD card in my Sony A57. After importing into Lightroom, there are horizontal artifacts on most of the imported photos. This is a screen grab of Lightroom displaying one ...
1
vote
0answers
32 views

Lightroom 5: how to batch adjust white balance

I own Lightroom 5 and I've been running a quite stable workflow for several years, including calibration of the monitor and the printer. In the past I printed my photos on my own and I was pleased ...
0
votes
1answer
38 views

What are the possible reasons my Pentax K-r malfunctions when using flash?

I have a Pentax K-r. It works fine in general. But, when I try to use flash, it doesn't take pictures anymore. The shutter will not fire. What can be the possible causes? Is there a hope to repair ...
2
votes
1answer
36 views

Best approach to handle flash with my film camera?

Although I have been photographing for 3 years now, there are still areas I am fairly new to. I really love film photography, but I also like to use flashes for portraits and such. Of course with my ...
0
votes
2answers
62 views

How to calculate camera settings for a family group portrait with a film camera and flash?

I'm shooting film 200 ASA.,, Three rows of family members in front of a large white lit xmas tree, with flash. Distance from first row approx.15ft. Where should the focus on the group be? What would ...
1
vote
0answers
24 views

What works with RC2 quick release?

A number of brands have quick-release systems that look like the RC2/200PL, but are they the same (intercompatible clones) or do they just look alike from a distance, down to the level with secondary ...
1
vote
0answers
24 views

How do I scan old negatives that have black dividing lines versus the clear lines on the newer negatives?

I'm scanning a lot of old negatives but have now hit a batch of 30+ year old negatives that won't scan after the first cell. The others on the strip are scanned with pieces of adjoining cells. Upon ...
0
votes
0answers
39 views

what qualities should I be looking for in a long range lens [duplicate]

I am trying to get a long range lens for taking pictures of animals. I have read many questions and realize I need at least a 300 mm and I know they all depend on price...I'm not to go crazy with ...
1
vote
0answers
40 views

How can I preserve adjustment layer effects when merging?

I'm trying to enhance the stars in a photo from Lightroom 5 using Photoshop CS6. I created a layer to which I added noise and on which I used a "levels" adjustment layer and a layer mask. I duplicated ...
0
votes
2answers
45 views

MY canon D1200 doesn't take a picture in AF mode [duplicate]

So my new canon d1200 doesn't take pictures in AF mode , my both lenses(50mm and 18-55mm) I have tried searching but up till now there is no solution. My canon takes picture in manual mode but in auto ...
1
vote
1answer
49 views

General guidelines on choosing a lens for an image sensor [on hold]

Not sure if this is the right place to ask this question, but here it is: I am trying to get up and running a VGA image sensor: 2755um x 2050um image area with 4.2um x 4.2um pixels and 640x480 ...
1
vote
0answers
58 views

Where is the focal point of a camera lens? [duplicate]

If the distance between the center of the lens and the film is called Focal length, does that mean the focal point of the camera lens is located on the film?
3
votes
1answer
38 views

Why do some photos show entirely black when exporting a 1080p slideshow from iPhoto?

I used to make slideshows with iPhoto and export as video. Today I'm trying to make another one but some photos appear totally black when exporting in 1080p... I tried to export at lower resolutions, ...
5
votes
2answers
450 views

Is using a large aperture with flash uncommon?

I found How can I use wide aperture with fill flash? and How can I use flash with large apertures? while trying to find a solution for using a large aperture to get DOF with the flash setup I have. ...

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