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by Bart Arondson

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Tagged Questions

Questions about a specific problem or issue, often dealing with a lens, camera body, image sensor, lighting equipment, or software specific to photography.

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4
votes
3answers
329 views

How do I troubleshoot Canon EF100-400L IS USM failure?

I use my EF100-400 on a Canon 10D. While in IS and auto focus mode, I was shooting a soccer match when the lens abruptly failed to focus, and I got an error message on the camera. I turned off the ...
5
votes
3answers
2k views

What causes auto-focus “freezing”?

On occasion, the auto-focus system in my camera and/or lens just stops working. I'll be holding down the shutter release halfway and tracking a subject and I can feel/hear the auto-focus system ...
1
vote
6answers
2k views

Frames are jerking/dropping on Canon 550D during full HD recording, using a class 6 card. Are there better cards? [closed]

Why are the frames jerking? What SD cards can I use that won't have this problem?
2
votes
2answers
389 views

How do I fix an unresponsive Canon A510 with an adapted Kingston microSD card?

I have a Canon PowerShot A510 using a Kingston 2GB microSD card with an SD adapter. The SD card worked perfectly until I formatted the card in my Mac. I formatted it with MS-DOS Fat file system. Now, ...
3
votes
3answers
7k views

Why does my Nikon D90 have a “Job nr” error?

I have a problem with my D90 I'm unable to figure out. Whenever I take a long exposure with my D90 (say, for 10 or 15 seconds), when the shutter closes again, the info display on the camera reads "Job ...
7
votes
3answers
558 views

Why does my external flash use Ni-Cd and Ni-Mh batteries so quickly?

I've recently purchased a Canon 430EX II to use with my 550D and it's great but I'm having battery issues. I've been trying to use 2× 800mAh Ni-Cd and 2× 2500 mAh Ni-Mh (all rechargeables, the 800mAh ...
9
votes
5answers
584 views

What conditions hold up continuous shooting?

Sometimes when attempting to shoot continuously (at high speed) with my Nikon D90, something appears to block the smooth interval between shutter releases. I have it set up to take RAW and JPEG ...
1
vote
1answer
334 views

Why is the mirror on this old camera stuck halfway? [closed]

I received this old Minolta along with a lot of other camera related stuff that some friends weren't able to sell at a garage sale. I'm not really interested in using it, but I'm curious as to why ...
5
votes
2answers
1k views

Is it sensor damage? Or dust?

I have been trying to shoot partial solar eclipse today with my Nikon D3100, and later noticed this spot on images: http://pix.academ.org/img/2011/01/04/70baea815d1557594f096a82ab05704f.png I do not ...
7
votes
6answers
7k views

Why do images get “corrupted”?

I have had my Nikon D40 for a while, and some of the pictures are coming out distorted. Two examples are below: So my questions are: How do I fix them after the fact? - i.e. after they have been ...
9
votes
2answers
408 views

How to prevent zoom-creep?

The Nikkor 18-200mm VR lens creeps until fully extended if pointed vertically down. This is preventing me from using it on a rostrum camera. Is there a piece of equipment or a simple (and ...
5
votes
3answers
970 views

Why does my 420EX Speedlite sometimes fail to start up?

I have a Canon 420EX Speedlite that sometimes won't start up. When it's not working, it behaves as if it didn't have any batteries in it... just totally dead. The odd thing is, it doesn't seem to be ...
4
votes
3answers
3k views

What should I do when I get “Lens Error Restart Camera”? [duplicate]

Possible Duplicate: What should I do about Canon PowerShot “Lens error, restart camera”? I have a PowerShot SX20is that started to throw this error out of the blue: Lens ...
13
votes
4answers
2k views

How can I avoid soft dull “spots” in my pictures?

Recently, I've been doing a lot more photography, particularly with my 100-400mm telephoto and 16-35mm wide. I am skilled enough that I can capture the shot mostly as I want with just the camera gear, ...
9
votes
8answers
5k views

Why are my Lightroom exports too dark in Flickr?

I've been using LR3 for a while now and have noticed that when I export a photo to JPG and upload it to Flickr it ends up slightly darker. The exported photo is ok, it's the image when viewed through ...
6
votes
5answers
3k views

Why is my Nikon 18-200 lens not focusing at higher focal lengths?

My Nikon 18-200 lens on a D300 camera will not focus when it is zoomed between 135mm and 200mm. Is there any tips on how to solve this besides handing it in to a photo store?
11
votes
1answer
874 views

How can you tell if a lens is having problems with back focusing?

I recently bought a Canon EF 24-70/2.8L to use with my 450D and I suspect that it is constantly back focusing. Is there any way of determining if it is something wrong with the lens or if it is a ...