Macro Show Down-3 Legendary Lenses: A non-scientific test

roentarre · 03-13-2008, 02:45 AM

The thing about Voigtlander macro is that it tends to render cool tone to the images.

Surprisingly, your tokina shot produces much cooler tone comparing to voigtlander macro shot!

troyz · 03-23-2009, 04:52 PM

Originally posted by aegisphan

Note: the Tokina's magnification is a little less than 1:1 since I've not modded the teleconverter. The decrease the exposure value in the Vivitar and Tokina shot by about 0.7 eV to match with the Voigtlander's. The 100% crops, however, are kept at the original exposure.

Hmmm. . .

by "teleconverter", do you mean the tokina (or vivitar) dedicated macro extender or something else? What modification would you do to get 1:1 magnification?

fwcetus · 03-23-2009, 05:04 PM

Originally posted by troyz

Hmmm. . .

by "teleconverter", do you mean the tokina (or vivitar) dedicated macro extender or something else? What modification would you do to get 1:1 magnification?

I am also very confused about exactly which Tokina lens you used (and why, if it's the AT-X 90/2.5 Macro, you did not attach the 1:1 Macro Extender, which it needs to work properly at 1:1).

You mentioned a "teleconverter" - the 1:1 Macro extender is neither a TC nor an extension tube.

What "mod" are you referring to?

Could you please provide some specifics?

k100d · 03-23-2009, 05:59 PM

hiep hasn't been here in ages :/

fwcetus · 03-23-2009, 06:33 PM

Originally posted by k100d

hiep hasn't been here in ages :/

Ah, thanks for the tip. I guess there won't be any more info forthcoming on hiep's "non-scientific test" - <g>.

troyz · 03-23-2009, 06:53 PM

Originally posted by k100d

hiep hasn't been here in ages :/

Oops. . . my bad. . .

Next time I'll check the year of the last post instead of just the day and month!

Nick Siebers · 03-25-2009, 05:52 PM

For the curious, I have used a Tamron "F-system" 2X teleconverter to get my Tamron ATX 90mm to 1:1. It is handy because it has A contacts, but there is definitely a loss of image quality compared to without, or to shooting with extension tubes for the same magnification.

One of those 1:1 macro extenders sounds nice!

fwcetus · 03-25-2009, 07:14 PM

Originally posted by Nick Siebers

For the curious, I have used a Tamron "F-system" 2X teleconverter to get my Tamron ATX 90mm to 1:1. It is handy because it has A contacts, but there is definitely a loss of image quality compared to without, or to shooting with extension tubes for the same magnification.

One of those 1:1 macro extenders sounds nice!

The interesting thing about the "1:1 Macro Adapter" (as Vivitar calls it for the VS1 90/2.5 Macro lens) and the optically identical "1:1 Macro Extender" (as Tokina calls it for its also optically identical AT-X 90/2.5 Macro lens) is that they are not mere "empty" extension tubes, nor are they "regular" (i.e., magnifying) teleconverters - they have three optical elements inside in each case, but they are primarily for field flattening and aberration compensating at 1:1.

kristoffon · 03-25-2009, 07:46 PM

Originally posted by aegisphan

All lenses were at wide open (since it is what i use most of the time).

You shoot macro wide open???

How do you manage depth of field?

I have a vivitar 100mm f2.8 macro and I do find it soft wide open, but I only use it a f/16 so I don't really care.

Also, your vivitar is probably defective (as stated before), that's not just "lens softness", there's probably some misaligned element in the lens.

03-23-2009, 05:04 PM	#18
fwcetus Site Supporter Join Date: Sep 2006 Location: New England Photos: Gallery \| Albums Posts: 1,286	Originally posted by troyz Hmmm. . . by "teleconverter", do you mean the tokina (or vivitar) dedicated macro extender or something else? What modification would you do to get 1:1 magnification? I am also very confused about exactly which Tokina lens you used (and why, if it's the AT-X 90/2.5 Macro, you did not attach the 1:1 Macro Extender, which it needs to work properly at 1:1). You mentioned a "teleconverter" - the 1:1 Macro extender is neither a TC nor an extension tube. What "mod" are you referring to? Could you please provide some specifics? Last edited by fwcetus; 03-23-2009 at 05:31 PM.

03-25-2009, 07:14 PM	#23
fwcetus Site Supporter Join Date: Sep 2006 Location: New England Photos: Gallery \| Albums Posts: 1,286	Originally posted by Nick Siebers For the curious, I have used a Tamron "F-system" 2X teleconverter to get my Tamron ATX 90mm to 1:1. It is handy because it has A contacts, but there is definitely a loss of image quality compared to without, or to shooting with extension tubes for the same magnification. One of those 1:1 macro extenders sounds nice! The interesting thing about the "1:1 Macro Adapter" (as Vivitar calls it for the VS1 90/2.5 Macro lens) and the optically identical "1:1 Macro Extender" (as Tokina calls it for its also optically identical AT-X 90/2.5 Macro lens) is that they are not mere "empty" extension tubes, nor are they "regular" (i.e., magnifying) teleconverters - they have three optical elements inside in each case, but they are primarily for field flattening and aberration compensating at 1:1. Last edited by fwcetus; 03-25-2009 at 07:22 PM.

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03-13-2008, 02:45 AM	#16
roentarre Veteran Member Join Date: Oct 2006 Location: Melbourne, Australia Posts: 11,783	The thing about Voigtlander macro is that it tends to render cool tone to the images. Surprisingly, your tokina shot produces much cooler tone comparing to voigtlander macro shot!

03-23-2009, 04:52 PM	#17
troyz Veteran Member Join Date: May 2008 Posts: 389	Originally posted by aegisphan Note: the Tokina's magnification is a little less than 1:1 since I've not modded the teleconverter. The decrease the exposure value in the Vivitar and Tokina shot by about 0.7 eV to match with the Voigtlander's. The 100% crops, however, are kept at the original exposure. Hmmm. . . by "teleconverter", do you mean the tokina (or vivitar) dedicated macro extender or something else? What modification would you do to get 1:1 magnification?

03-23-2009, 05:59 PM	#19
k100d Veteran Member Join Date: Feb 2008 Location: Toronto Posts: 3,911	hiep hasn't been here in ages :/

03-23-2009, 06:33 PM	#20
fwcetus Site Supporter Join Date: Sep 2006 Location: New England Photos: Gallery \| Albums Posts: 1,286	Originally posted by k100d hiep hasn't been here in ages :/ Ah, thanks for the tip. I guess there won't be any more info forthcoming on hiep's "non-scientific test" - <g>.

03-23-2009, 06:53 PM	#21
troyz Veteran Member Join Date: May 2008 Posts: 389	Originally posted by k100d hiep hasn't been here in ages :/ Oops. . . my bad. . . Next time I'll check the year of the last post instead of just the day and month!

03-25-2009, 05:52 PM	#22
Nick Siebers Veteran Member Join Date: Jun 2008 Location: Madison, WI Photos: Gallery \| Albums Posts: 2,165	For the curious, I have used a Tamron "F-system" 2X teleconverter to get my Tamron ATX 90mm to 1:1. It is handy because it has A contacts, but there is definitely a loss of image quality compared to without, or to shooting with extension tubes for the same magnification. One of those 1:1 macro extenders sounds nice!

03-25-2009, 07:46 PM	#24
kristoffon Veteran Member Join Date: Aug 2008 Location: Brazil Posts: 532	Originally posted by aegisphan All lenses were at wide open (since it is what i use most of the time). You shoot macro wide open??? How do you manage depth of field? I have a vivitar 100mm f2.8 macro and I do find it soft wide open, but I only use it a f/16 so I don't really care. Also, your vivitar is probably defective (as stated before), that's not just "lens softness", there's probably some misaligned element in the lens.