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Topics - EOBeav

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Lighting / Question about lighting ratios
« on: February 19, 2013, 11:20:30 PM »
I have two strobes set up, each angles 45 degrees horizontally from the subject. Assuming no ambient light, if I shoot one  at 1/4 power, and the second at 1/8, is that a 1:2 ratio?  I'm assuming it is.

If I shoot one strobe at 1/4 power, and the second at 1/16, is that a 1:3 ratio?

Sorry for the ignorance, I just wanted to make sure I understood that concept correctly. Thanks in advance for your help.

Software & Accessories / How do you pack your filters around?
« on: February 15, 2013, 12:31:00 PM »
I'm not a big filter guy, but I do have some MCP's and ND filters in various strengths and sizes that I pack around. Probably 8 in all.  Their individual cases/holders take up quite a bit of room in my Lowepro 400 AW. Is there an alternate way to pack these around where they won't get scratched, and are easily accessible, while reducing the amount of space they take up? Thanks in advance for your help.

EOS Bodies - For Stills / 5DmkII and Live View
« on: January 06, 2013, 09:27:57 PM »
So I was using my 5DmkII tonight and shooting in Live View at ISO 160. When I imported into Lightroom, it said ISO 6400. Is this an adjustment that LV makes? Is there something I can do in-camera to correct it? Thanks for your help.

EOS Bodies - For Stills / How to price my gear?
« on: November 23, 2012, 04:58:59 PM »
I moved up from a Rebel XSi to a 5DmkII about a year ago. I had planned on keeping it around for a second body, but so far it's just been sitting in the drawer with little to no use. I figured I might as well unload it on somebody to start my fund for my next L lens.

How do I go about pricing this stuff? I've got the body, the kit lens, a couple of batteries, USB cord, even the book (I never read it). I would think it would appeal to somebody looking for a good entry level dslr kit who doesn't want to pay the going rate for the current Rebel kit at CostCo. I've looked around a little on eBay, but there seems to be a pretty wide range of prices there. Any thoughts on how to go about this? Thanks in advance for your advice. 

Lenses / Advice for upcoming portrait shoot
« on: October 28, 2012, 11:40:38 AM »
There's not really a section here for technique advice in the CR forums, so I thought I would just post this here. I know there are plenty of CR members with the experience to help me deal with this situation.

I just signed a new client up for a senior portrait shoot. She's a great kid and has a bright future (I've known her since elementary school).  The concern I have doing her portraits is her weight: She's quite heavy. What are some pointers to keep in mind so that I don't accentuate her size? Obviously, I'm not going to be able to turn her into a Heidy, but what can I do to make her look her best? I'm guessing that I need to keep in mind my lens selection (I go from 17-40, 50, and 70-200mm focal ranges) as well as camera angles. What kind of advice do you have for me?  Thanks in advance for your helpful suggestions and comments.

Lenses / AI Focus tracking issue, or user error?
« on: October 26, 2012, 09:32:34 PM »
I shot this with a 5DmkII and a 70-200mm f/4 L, AF AI Servo mode. As you can tell, the image is focused just behind the runner, yet I had the focal point zeroed in on the runner's chest the entire time. Otherwise, the lens autofocuses really well. Is it me, or my gear? Should I plan on focusing just in front of the runner to compensate for AF lag?

Granted, my body/lens combo is suited more for landscapes than it is high school football. The easy answer here is to say "get a 70-200mm f/2.8 L IS", but that ain't gonna happen any time soon.

Thanks in advance for your thoughts. EXIF data is listed just below the image. See the largest file size for more detail if you need to.

Touchdown! by Rick.Scheibner, on Flickr

Exposure   0.001 sec (1/800)
Aperture   f/4.0
Focal Length   200 mm
ISO Speed   500
Exposure Bias   0 EV

Lighting / Sports photo question
« on: October 17, 2012, 11:55:00 AM »
This seems like a pretty big off-camera flash to use for an NBA game, especially so because it doesn't appear to be modified/softened in any way. Isn't that uncommon for sports photos, especially for something as high profile as the NBA?

Lighting / Question about color temp of strobes
« on: October 14, 2012, 12:05:39 PM »
What is the standard color temperature that most strobes put out? I'd like to balance the CT of a strobe to match some cloudy, filtered sunlight conditions. I'm thinking that a 1/4 CTO gel might get the job done. Am I thinking about this correctly?

Software & Accessories / OS Questions
« on: October 12, 2012, 02:44:49 PM »
Mac users, feel free to move along. There is nothing for you to see here.

For everybody else I have a question about which Windows OS to use. I have a need to rebuild some components in my computer, including the hard drive. I don't currently have it right now, I can get the Windows 7 disk that originally came with my computer. I do have an older copy of Windows XP (sp3) that came with a previous computer I had. It ran everything I needed it to, including:

  • LR3, which I use 99% of the time
  • GIMP, which I use for simple masking and other edits that I can't do in LR3
  • Chrome/FF, and all of the appropriate web apps/extensions
  • Other family/personal applications--Evernote, iTunes, Dropbox, Office, etc...

I have experience getting an OS up and running from scratch, including drivers, etc... so that part won't be a problem. 

I'm not into slick and sexy, I'm more into functional and productive. If everything I need works on XP, is there a reason not to use it? I realize it is old and unsupported now, so I don't know if there are any glaring security issues associated with it. And we practice safe computing, avoid P2P file sharing, don't open unknown extensions, use an updated antivirus, etc... I figured there are others on here who have more knowledge about this than I do. And, I'm sure there will be some debate on both sides, so let the games begin...

Thanks in advance for your helpful comments and suggestions.

Software & Accessories / Needing a primer on batteries
« on: October 07, 2012, 01:10:24 PM »
I need to get a 2nd battery for my 5DmkII.  The problem is, I don't know what a better deal is, the original Canon that sells for $50USD+, or an off-brand with similar specs that sells for $35USD? 

Lighting / Matching flash WB to natural sunlight with a gel
« on: October 06, 2012, 05:38:25 PM »
When I use my speedlight during an evening portrait shoot, there's a big difference in WB between the flash and the natural light. Is there a gel color that can counteract this?

Macro / Couldn't do this again if I tried
« on: September 15, 2012, 11:41:53 AM »
This isn't technically a macro shot, but I think it's in the spirit of macro photography. Sometimes, you just get lucky.

CDB? by Rick.Scheibner, on Flickr

Lenses / The 50mm f/1.4: Conclusion
« on: September 10, 2012, 07:01:56 PM »
So I had to send my 50mm f/1.4 up to the lens hospital in Spokane. It was a DIY fix that went awry. It's being discharged now and is on it's way back home to me. How much did all of this cost? Not as much as a new lens. Not quite, anyway. But it sure feels like it. But it's my own fault, and ended up costing me more because of the botched fix-it job.

If you own this lens: Store it in the middle of the focus range, like around the 3 foot mark, and NOT at the infinity point like a lot of people recommend on the internets. I got this advice from the guy who worked on it, a factory-authorized lens tech.

Ok, I fixed my focus mechanism according to this tutorial, but now I have a different problem. When I connect it and try to take a photo, I get an Err 01, telling me that the lens isn't making good contact and to clean the terminal (or something to that effect.)

I've attempted to take it apart again and make sure that all electronic connections are correct, but I don't see anything wrong. Everything else is tight and fit back together well. Any advice on what might be going wrong? Thanks in advance for your help.

Technical Support / The 50mm f/1.4 focus ring issue
« on: August 12, 2012, 01:48:09 PM »
I've owned this lens for about 3 years now, and the problem has finally caught up with me.  This is a well known problem and is documented on the internet. Basically, the focusing mechanism starts to fail and not allow the ring to work at the extreme ends of the range. AF just goes back and forth as it tries to get to a spot that the ring won't allow. The problem seems to be due to a helicoid that becomes misshapen. There is a rather detailed DIY fix that seems to be fairly straightforward with good photos and appropriate warnings along the way. I actually came across it about 2 years ago and saved it to Evernote, thinking it might come in handy some day. That some day is here.

Before I dive into it, does anybody have any other experience this problem? Am I better off to send it to the repair shop? Thanks in advance for whatever insights you have.

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