Canon 50mm f1.8 + extension tubes

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stupar

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I'm going to be purchasing a nifty fifty of kerso this week. I've also been offered a set of af extension tubes of a friend.
My question to you is how well does the nifty fifty work with extensions and does anyone have example shots?
 
Works well :thumbs:

Are they auto tubes? It's a right faff if they're all manual.
 
micloi said:
Works well but please have in mind that the depth of field will be very thin so do not expect miracles
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Depth of field is the same, f/number for f/number, whether you use tubes, or a macro lens or whatever :thinking:
 
micloi said:
Not from my experience. Maybe I am not using the right term but the depth of the focal plane is much thinner when tubes are used.
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You are right - you are NOT using the right term and confusing Depth of Field with Depth of focus.
 
stupar said:
I'm going to be purchasing a nifty fifty of kerso this week. I've also been offered a set of af extension tubes of a friend.
My question to you is how well does the nifty fifty work with extensions and does anyone have example shots?
Click to expand...

It works very well indeed since the "Nifty Fifty" is a very sharp lens.

Here is an example:


4032796615_fa65e43eb5.jpg

​

Taken with a Canon EOS 450D using a 50mm F1.8 lens and Kenko auto extension tubes.

Larger size:http://farm3.static.flickr.com/2722/4032796615_26efa6305a_o.jpg

One good thing about that combo is that you can use the onboard flash wthout the lens/tube combo blocking it.
 
petersmart said:
You are right - you are NOT using the right term and confusing Depth of Field with Depth of focus.
Click to expand...

That's not right either. Depth of focus isn't relevant here.

Depth of focus refers to the distance either side of the sensor that retains acceptable sharpness, as opposed to the distance either side of the subject, which is depth of field. Since the sensor plane is fixed parallel to the lens in a DSLR (unless you're using a tilt & shift lens) depth of focus makes no odds.

No matter how you do it, depth of field is always the same for a given magnification and f/number.
 
This is what I was trying to explain (see comment just after the middle of the article):
http://www.shutterfreaks.com/Tips/ExtensionTube.htm

Quote:
"Depth of Field (DOF)

Also, as you get closer to the focus object the Depth of Field (DOF) gets very narrow (see DOF tip). This requires some very precise work to get your entire subject in focus with the extension tube mounted on the shorter focal length lenses. But increasing the f stop will increase the DOF just as always. "


Also here:
http://www.whatdigitalcamera.com/te...reeman-s-guide-to-shallow-depth-of-field.html

Quote:
"Depth of field diminishes the closer your point of focus, so the combination of the extension tube and wide aperture created a really shallow zone of focus."
 
micloi said:
<snip>
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All I was trying to do was correct an earlier comment where it was implied (or so I thought) that you get less depth of field with tubes. Apologies if I misread that.

BTW, there is a mistake on one of your links about longer lenses and depth of field. You shouldn't believe eveything you read on't web :lol:
 
micloi said:
Agree with that :) That is why I included the Whatdigitalcamera link as well which tends to write things that are a bit more reliable!
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:eek: How do you explain this nonsense quote from the WDC link?

"Other factors include the choice of lens: the more telephoto the lens the greater the apparent depth of field (all other things being equal)."
 
HoppyUK said:
:eek: How do you explain this nonsense quote from the WDC link?

"Other factors include the choice of lens: the more telephoto the lens the greater the apparent depth of field (all other things being equal)."
Click to expand...

Made a mistake there. Feel free to comment to get him to fix it :shrug:

The whole notion of not getting as much in focus when you use tubes seems to hold though and that is what the OP was asking.

I am off now :exit:
 
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