Calibration (1 Viewer)

HnehpetS

Wannabe Birder

• Oct 12, 2009

• #1

i run a canon 30D and, for bird photography a 300mmf4 lens with a 1.4converter (or whatever they're called). I've noticed some comments in this place concerning calibration, can somebody give me a 'thickery' guide as to what this is about and how I get it done/checked. I presume 'calibration' in this sense is not referring to monitor/printer.

Cheers

StephenH

 

Nikon Kid

Love them Sula Bassana

• Oct 12, 2009

• #2

I checked in your gallery, if you took the images with AF and if you had 1.4 TC converter in as well, they look OK to me, don't think you need to get your lens or camrea calibrated, with some of the more expensive cameras you can mircro adjust the AF with your lens and camera.

 

666taz

Phill Wain

• Oct 12, 2009

• #3

Hi Stephen i agree with Nikon Kid i also took a look at your pics and theres no problem with your setup i can see there all sharp and in focus no probs .What calibrations about is some lenses front or back focus so you send your lens into the makers with the camera and they check it out and if they find its not quite right they calibrate the camera and lens so they dont front or back focus.Front focus means your set up is focusing infront of the subject back focus means your set up is focusing behind the intended subject.But as i said i dont think you have a problem Phill.

 

HnehpetS

Wannabe Birder

• Oct 13, 2009

• #4

Thanks guys, I have a better understanding now. And now I think about it, prompted by your comments, I guess I don't have a problem in that area. I can't say I'm so happy with the resolution, but that may be more about expectation on my part.

 

Tim Taylor

work in progress

• Oct 13, 2009

• #5

Resolution can also be to do with how many pixels on your sensor are occupied by bird - ie a big crop won't show much even if it's perfectly in focus in perfect light with a perfect lens. Your pictures look good to me.

 

HnehpetS

Wannabe Birder

• Oct 14, 2009

• #6

Tim Taylor said:

Resolution can also be to do with how many pixels on your sensor are occupied by bird - ie a big crop won't show much even if it's perfectly in focus in perfect light with a perfect lens.

Click to expand...

I guess I have three options - get more pixels on my camera, get a bigger longer faster lens, get closer - there is a fourth option but I'll leave that unsaid as I quite enjoy the challange of the occasional wildlife shoot.

 

Nikon Kid

Love them Sula Bassana

• Oct 14, 2009

• #7

The one that cost no money, and yields better results most of the time is get closer, get some camo gear on to get even closer.

 

R

Raikyn

Well-known member

• Oct 16, 2009

• #8

For those with live view and micro adjust AF here is a method to get an almost exact point of proper focus.

http://northlight-images.co.uk/article_pages/cameras/1ds3_af_micoadjustment.html
http://www.openphotographyforums.com/forums/archive/index.php/t-4708.html

More accurate and easier than the old number on a 45degree sheet method.