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11
votes
2answers
399 views

Does focus breathing make a lens slower when close focusing?

I've heard that focal length of some lenses will become noticeably longer when focusing to a close distance, an effect called "focus breathing". Since f-number is focal length divided by diameter of ...
4
votes
3answers
112 views

How do I rig up a color filter for my Sigma 8-16mm Ultrawide?

I am a bit confused... I'm not sure if the cokin system will work on my lens, as my lens doesn't have threads for a filter. I've found that placing a Z series cokin filter in front of the lens will ...
2
votes
2answers
993 views

Why does my Nikon D3100 display 'File contains no image'?

My camera has been working fine. I keep it in it's protective carrying case - nothing damaging has ever happened to this camera. I took it out a few days ago and the display showed that my file ...
32
votes
7answers
4k views

What are the dangers of removing a lens while the camera is on?

The manual warns that you should turn the camera off to remove the lens, but it doesn't say why. I suspect this may have to do with dust, but I could imagine there are lots of other reasons. I'm ...
2
votes
1answer
70 views

Can removing the lens while pressing the DoF preview button damage the equipment?

I know there's hardly any risk to your equipment when dismounting the lens while the camera is on, but can you damage it if you dismount the lens while the aperture is closed down? With the Canon EOS ...
1
vote
1answer
36 views

Are lens adapters with mechanical aperture control really working well?

This answer about a lens adapter with a mechanical aperture control (like these 1,2) got me thinking - Is it possible to control the aperture of a lens in this way? To me the answers to this question ...
0
votes
0answers
37 views

Why do medium format (digital) cameras capture better dynamic range? [duplicate]

Why do medium format (digital) cameras capture better dynamic range than smaller sensor cameras?
1
vote
3answers
185 views

How significant is difference in dynamic range between Sony A7 and Canon 5D Mark II?

I'm still trying to make a choice between these two cameras. The dynamic range is important thing to me. Many people say that the first one has a wider dynamic range. Even DXO Labs shows 14.2 EVs of ...
0
votes
3answers
56 views

Sharing Lightroom Catalog

My setup is this. I have a iMac Computer that is my main computer running Lightroom 5 / I have subscribed to Adobe Creative Collection so that allows me to instal Lightroom on another computer. I ...
3
votes
1answer
120 views

Canon Speedlites & Live View

I am having difficulty getting my Canon speedlites (600ex master and two 430ex slaves) to fire when using Live View on my 5D Mark III. I have no triggering problems except when using Live View. I was ...
0
votes
1answer
23 views

What is cycles/distance in image sampling? [closed]

I know its a measure of a resolution but how is it different/same from the unitls like pixels/inch or dots/inch?
27
votes
6answers
10k views

What's the best way to scan in hundreds of pictures?

I have thousands of old pictures which were sitting in a photo album. Unfortunately, instead of the photo album protecting the pictures, the plastic coverings yellowed, and the pictures themselves had ...
1
vote
3answers
87 views

Where to get serious portfolio book printed?

I'm looking into getting a serious professional portfolio printed so I can carry it with me to show to clients. I do a lot of printing on my own with my Epson R3880. With my own printing I get to ...
10
votes
5answers
5k views

How to delete JPG files, but only if the matching RAW file exists?

My early (Canon G2) photos are all JPG, but when I got my Nikon D90 I initially shot in JPG, then switched to RAW+JPG, and now I would like to switch to RAW only. I have literally thousands of photos ...
0
votes
1answer
28 views

Aperture of Photography [duplicate]

I am a beginner. Can anyone state what it means if anyone says "The aperture of the photo/pic is not correct."? I donot know what actually aperture means.
0
votes
0answers
262 views

What can cause massive overexposure on a Canon PowerShot A470?

I have a Canon PowerShot A470. One day, while taking photos, it has gone from taking perfect pictures to being massively overexposed (almost white) pictures; however, this is not a problem with taking ...
3
votes
2answers
134 views

Gigabit ethernet on Canon EOS 1DX

I am in the market for a new camera and was strongly considering the Canon EOS 1DX. In my investigations I have discovered two things regarding the ethernet connection. It is nowhere near the 1 ...
0
votes
0answers
17 views

Is it possible to calculate f-stop gain/loss for different sensor size? [duplicate]

I would like to know if it is possible to calculate f-stop gain/loss for different sensor size. For example, how much light can capture an aps-c vs a 1/2.3 sensor ? Thank you
0
votes
2answers
152 views

how to adjust Triopo Shoe Mount Flash TR-950 TR950 with Nikon d3100?

When I shoot with my Triopo speedlight I have to set my camera to f/5.6 and 1/100 with the flash at 1/4 power. If I increase the flash power, the picture is black. If I change the shutter speed or ...
0
votes
3answers
192 views

Full frame or not? [duplicate]

I am struggling to decide between the 5D and the 70D as an upgrade to a 600D. I am an amateur photographer achieving pleasing results with my 600 and I have 5 good lenses. The kit (18-135) is an EF-S ...
0
votes
3answers
39 views

How do I map white balance settings on the Sony NEX to Lightroom?

This answer describes how Lightroom measures white-balance, primarily using a "Temp" slider and secondarily using a "Tint" slider. My Sony NEX-5R seems to use a different system for white balance ...
2
votes
2answers
57 views

Why refer to “aperture” as “iris”?

With common lenses the aperture is controlled by a mechanism called an "iris." But, especially with cine/video-oriented lenses, I often see the term "iris" used as an apparent synonym for aperture. ...
0
votes
0answers
43 views

Nikon D5100 “Press Shutter Release Button Again” error, but fixing itself after left alone for a while

First of all to be clear, the camera was not dropped or anything; it started to behave like this from nothing. I turned on my camera and first it displayed "Turn off the camera and turn on again". ...
50
votes
6answers
7k views

Why are wide-angle lenses so much more expensive?

What is it about wide-angle lenses that makes them so much more expensive than an equivalent-quality tele or prime lens? Take the Canon EF-S 10-22mm USM, for example. RRP is nearly £1,000! Are they ...
11
votes
7answers
679 views

What to look for in a compact camera to take picture of black dog?

I like to take snapshots of my black dog during hikes and have grown annoyed at my camera. The changing light conditions and his movements force me to use the automatic sport mode, which often ...
0
votes
0answers
7 views

Query regarding Autofocus points [duplicate]

I am planning to buy camera and my search has ended on two cameras first one is nikon d3300 and nikon d5300... main diffrence between them is d3300 has 11 focuspoints and d5300 has 39 focus ...
2
votes
5answers
3k views

Will any of my old Nikon gear be compatible with a D3100?

I have an old Nikon F801 35mm film camera with a Nikon SB-24 flash gun a AF Nikkor 70-210 mm 1:3.3-4-5 & a AF Nikkor 35-70mm 1:3.3-4.5 I am thinking of buying a new set up the Nikon D3100 with ...
4
votes
3answers
168 views

Why do macro lenses have such recessed front elements?

This is a 90mm Tamron SP Di macro lens. Like other macro lenses in this focal range I've seen, it has a deeply recessed front element — more than 1.5", and that's without the optional lens ...
0
votes
3answers
83 views

How do I find the filter size for Sigma lenses?

I know that my Nikon lens takes a 52mm filter size, however I also have two other lenses but they are Sigma lenses and don't have the mark to find the size for filters. How do I find the filter size ...
0
votes
4answers
75 views

Speedlite 430EX II & Canon 60D

I have a Canon 60D and a Speedlite 430EX II. Does anyone know if I can fire the speedlite remotely without firing the built in flash as well? So far I have only been able to fire them both.
1
vote
1answer
61 views

“Press Shutter Release Button Again” Error on Nikon D40x DLSR

I have a Nikon D40x that has been working fine for over 5 years now. It just recently quit on me with the error message "Press Shutter Release Button Again".. I have cleaned and lubricated the red ...
2
votes
2answers
127 views

Difference between zoom and focal length? [duplicate]

Until now I thought that focal length is just another way of measuring how much a lens zooms: The higher the number the more it magnifies, the smaller the number the wider the angle and thus the less ...
1
vote
1answer
98 views

Approved memory cards for nikon d3100

From many sources I find that Nikon supports only 16 GB (not 32GB) SanDisk sdcards. This is the source of the information ...
1
vote
1answer
68 views

Lens recommendation for upcoming NYC trip? [duplicate]

I'm just a photo enthusiast knowing just the basics so far. My dad used to work with a film SLR and taught me a few things. I currently own a Canon 60D with the 18-135mm kit lens. I originally wanted ...
0
votes
2answers
64 views

Printer color calibration software for “manual” calibration

I don't think that I need professional calibration for my printer (its for private use, and an MX925 only anyways) but I thought that since I have a color checker passport, there might be some way to ...
1
vote
1answer
58 views

Clear container to take photographs through

Is there any type of clear container that objects inside can be photographed with little to know effect. As in, photographing the object inside the container at different angles is the same (or ...
0
votes
0answers
54 views

Infinity focus problem

When I shoot with my camera with many lenses at relatively wide apertures, and try to focus to infinity, (manually, using zoomed live view or otherwise), I find that end result pictures are not ...
0
votes
1answer
101 views

Setup for macro photos of flat surface with macro lens and led ring

I need to take photographs of a close flat surface with controlled lighting. I have an idea to do this, which is to use a dslr with a macro lens. Use a LED ring (which I see are usually used for ...
1
vote
0answers
49 views

Is there a way to overcome focus breathing in deep macro focus stacking?

Following this question I just got a Tamron SP 90mm f/2.8 Di Macro lens to study macro focus stacking. As seen in my attempt to reproduce a 6" depth it seems to work in practice. However then I went ...
0
votes
3answers
100 views

Exposure shooting youth sports during a sunny day

I would like to know how to prevent my photos from being dark during sunny day during a youth game. I am ising a nikon d90 shooting raw...and suggested settings would be appreciated.
0
votes
0answers
21 views

Looking for sigma adaptor to canon EOS 550d [duplicate]

Here's the situation.. I'm looking for a sigma lens adapter to a CANON 550D. The lenses are: A Sigma ZOOM, 24-70 mm, 1:3.5-5.6 UC; A Sigma ZOOm, 100-300 mm, 1:4.5-6.7 UC; Minolta AF ZOOM 35-70 mm, ...
29
votes
3answers
12k views

What does the number of elements and groups in a lens mean?

All lens specifications include a statement of how many elements the lens contains, and in how many groups, for example: Nikon AF-S VR Zoom-NIKKOR 70-300 mm 1:4,5-5,6G: 17 elements in 12 groups (two ...
5
votes
2answers
1k views

Is it normal for focal length to change while focusing?

When I change the focus distance on my Pentax 55-300mm lens, the focal length appears to change. More specifically, the lens appears to zoom in as I focus towards the minimum focusing distance. This ...
2
votes
1answer
102 views

Which filters will fit Voigtlander 15mm?

I recently got myself Voigtlander Super Wide-Heliar 15mm/4.5 lens, which I enjoy shooting a lot. It has built-in lens hood with filter threads and manual says it's fitted with 52mm filter threads. I ...
3
votes
1answer
57 views

Dust particles seen through viewfider

I have a very interesting thing happening with my Nikon D3100. When I look through the view finder I can see very prominent dust particles all over the frame. I know it is not dust on the sensor ...
3
votes
4answers
9k views

Can I use old Minolta AF lenses on my new Canon?

I just recently bought my first DSLR, a Canon Rebel t2i/550d. I use it mostly for video and it works wonderfully. I bought the kit lens with it, but I am looking to expand my lens collection. I found ...
13
votes
6answers
5k views

How do I get this 'glare' effect?

I have been staring at this Apple Image & trying to figure out how to get this glare effect (which can be seen on the monitor). Someone knows?
2
votes
1answer
43 views

Silver Efex Pro competitors

I have been trying Silver Efex Pro the last two weeks with absolutely amazing results. But before I commit my $$$ I would like to know if there is any other similar software out there that can do the ...
5
votes
6answers
251 views

Using a battery grip as a back up battery

Do you think that using a battery grip as a backup battery is a good idea? I just bought a used 50d and I need another source of power. Battery grips and normal batteries are similar in price (within ...
0
votes
0answers
29 views

Lightroom won't let me drag the photo while using adjustment brush in zoomed in mode anymore

Usually when using the adjustment brush it is possible to drag the image around while pressing the space bar. For some reason this feature has stopped working. Is this a setting I can set (to off) ...

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