April 20, 2014, 06:49:41 PM

Author Topic: Getting closer with 100L - use diopter? extension tube? both? other?  (Read 1968 times)

skitron

  • 6D
  • *****
  • Posts: 501
    • View Profile
I'd like to solicit thoughts and opinions about how to use a 100L at less than 1 foot distance [edit] or perhaps same working distance but greater magnification.

My guess is a diopter on front or extension tube on back or maybe both?

Please chime in if you have a solution and can comment about the pros and cons!

LOL, maybe the right answer is MP65 but not ready to go there just yet...
« Last Edit: January 11, 2013, 09:03:56 PM by skitron »
5D3, 70-200 f/2.8L IS II, 100L, 24-105L, Sigma 50/1.4, Canon TC 1.4x III

canon rumors FORUM


skitron

  • 6D
  • *****
  • Posts: 501
    • View Profile
Re: Getting closer with 100L - use diopter? extension tube? both? other?
« Reply #1 on: January 11, 2013, 06:09:24 PM »
...Very basically the broad idea is if you are shooting static subjects with a tripod then the tube is better, AF and shutter speed are not factors. If you are handheld or needing AF then the diopter is better...

Will be the latter in 99% of the cases. Any guidance on diopter strength for this particular lens?
5D3, 70-200 f/2.8L IS II, 100L, 24-105L, Sigma 50/1.4, Canon TC 1.4x III

Mt Spokane Photography

  • 1D X
  • *******
  • Posts: 7711
    • View Profile
Re: Getting closer with 100L - use diopter? extension tube? both? other?
« Reply #2 on: January 11, 2013, 08:33:04 PM »
Ideally, a 1.4X TC would be my choice.  Unfortunately, the best TC that physically fits (Kenko 1.4X DGX is known to lockup the 5D MK III.  I was able to confirm this the hard way)
I was able to use it with AF and a shorter extension ring.  I handhold the lens, so I had to hold my breath and be very still.
5D MK II, 100mmL f/10 ISO 800 and a substantial crop.
 

skitron

  • 6D
  • *****
  • Posts: 501
    • View Profile
Re: Getting closer with 100L - use diopter? extension tube? both? other?
« Reply #3 on: January 11, 2013, 08:50:18 PM »
Ideally, a 1.4X TC would be my choice.  Unfortunately, the best TC that physically fits (Kenko 1.4X DGX is known to lockup the 5D MK III.

I actually tried the Kenko with my 5D2 and the 100L but it had a nasty centering (or similar) issue. One entire side of the frame was OOF while the other side good.

How about the Canon vIII TC's for this? I need to get one for my 70-200 anyway.
5D3, 70-200 f/2.8L IS II, 100L, 24-105L, Sigma 50/1.4, Canon TC 1.4x III

BL

  • EOS M2
  • ****
  • Posts: 318
  • Great gear is good. Good technique is better.
    • View Profile
Re: Getting closer with 100L - use diopter? extension tube? both? other?
« Reply #4 on: January 11, 2013, 09:51:43 PM »
i've had pretty good success with an extension tube 12 and a 1.4x.

AF will hunt like crazy, but at magnifications past 1:1 or closer to 1.6:1 in this case , we're all using MF right?
M, 5Dc, 1Dx, some lenses, a few lights

NWPhil

  • Rebel T5i
  • ****
  • Posts: 157
  • one eye; one shot - multiple misses
    • View Profile
Canon shooter, but anything goes as ammunition (L, non L, Zeiss, Leica, Rokinon,Sigma)

skitron

  • 6D
  • *****
  • Posts: 501
    • View Profile
Re: Getting closer with 100L - use diopter? extension tube? both? other?
« Reply #6 on: January 15, 2013, 09:59:06 PM »
this might help a little bit:
http://www.flickr.com/photos/11465234@N03/sets/72157632509078088/


Thanks! That is very helpful.

Does diopter shrink DOF in proportion to how teleconverter and tubes do? I would assume it would.
5D3, 70-200 f/2.8L IS II, 100L, 24-105L, Sigma 50/1.4, Canon TC 1.4x III

canon rumors FORUM

Re: Getting closer with 100L - use diopter? extension tube? both? other?
« Reply #6 on: January 15, 2013, 09:59:06 PM »