Crop sensor or 1.4x teleconverter? Which is sharper?
Jun 9, 2015 08:09:15 #
Has anyone tested using a crop sensor dslr vs. a 1.4x teleconverter on a full frame camera?
Which would give a sharper, higher iq image?
Which would give a sharper, higher iq image?
Jun 9, 2015 08:27:19 #
Greenguy33 wrote:
Has anyone tested using a crop sensor dslr vs. a 1.4x teleconverter on a full frame camera?
Which would give a sharper, higher iq image?
Which would give a sharper, higher iq image?
I haven't, but I do think it begs the question: Which dSLR, which TC and which full frame? And added to that: Which lens?
There are too many variables here.
What I have done, is compare a 4/3 format lens on a 4/3 format camera, and use the same lens + adapter on a Micro 4/3 camera. The Micro 4/3 camera won hands down. Go figure.
Jun 9, 2015 08:27:59 #
The variables would make the test useless. It would not prove anything. There are full frame cameras that have higher pixel density that crop sensor cameras.
Jun 9, 2015 08:48:35 #
RWR
Loc: La Mesa, CA
Greenguy33 wrote:
Has anyone tested using a crop sensor dslr vs. a 1.4x teleconverter on a full frame camera?
Which would give a sharper, higher iq image?
Which would give a sharper, higher iq image?
I was curious of the same thing, and a few weeks ago took an FX shot with a 180mm f/2.8 Elmarit-R and 1.4X Sigma APO on my Nikon Df. Then I removed the teleconverter, and took a shot with the 180 in DX mode. I preferred the FX shot with the 1.4X, even though I had to crop a bit to match the DX shot.
Jun 9, 2015 08:55:33 #
A related question: since TC's so often produce soft images, especially with zooms, is it better to forego the TC and just crop the shot to the equivalent of what the TC would provide?
Jun 9, 2015 09:00:28 #
RWR wrote:
I was curious of the same thing, and a few weeks ago took an FX shot with a 180mm f/2.8 Elmarit-R and 1.4X Sigma APO on my Nikon Df. Then I removed the teleconverter, and took a shot with the 180 in DX mode. I preferred the FX shot with the 1.4X, even though I had to crop a bit to match the DX shot.
Interesting. Thanks for sharing that.
Jun 10, 2015 05:14:03 #
with sony G lenses and their TC I don't hesitate to use both together, the 1.4 or the 2.0. maybe my eyes are soft, because i'm getting some really sharp images.
Jun 10, 2015 20:41:00 #
Greenguy33 wrote:
Has anyone tested using a crop sensor dslr vs. a 1.4x teleconverter on a full frame camera?
Which would give a sharper, higher iq image?
Which would give a sharper, higher iq image?
In theory, any additional lenses you place behind, or in front of, your primary lens degrade the image quality. Thus, the primary lens / image sensor will give you a sharper image.
--Bob
Jun 10, 2015 21:01:48 #
Greenguy33 wrote:
Has anyone tested using a crop sensor dslr vs. a 1.4x teleconverter on a full frame camera?
Which would give a sharper, higher iq image?
Which would give a sharper, higher iq image?
Theories aside, it depends entirely on the lens, the TC and the sensors involved.
Jun 11, 2015 04:11:25 #
DaveHam
Loc: Reading UK
Greenguy33 wrote:
Has anyone tested using a crop sensor dslr vs. a 1.4x teleconverter on a full frame camera?
Which would give a sharper, higher iq image?
Which would give a sharper, higher iq image?
Obviously the crop sensor dslr will produce the higher IQ. Adding a teleconverter - any teleconverter - causes a loss however small of image quality.
Jun 11, 2015 06:57:47 #
rmalarz wrote:
In theory, any additional lenses you place behind, or in front of, your primary lens degrade the image quality. Thus, the primary lens / image sensor will give you a sharper image.
--Bob
--Bob
Forget the theory ....it has pretty much been established that a 1.4 TC has acceptable IQ....anything above that is debatable!
Jun 11, 2015 13:34:41 #
romanticf16
Loc: Commerce Twp, MI
Greenguy33 wrote:
Has anyone tested using a crop sensor dslr vs. a 1.4x teleconverter on a full frame camera?
Which would give a sharper, higher iq image?
Which would give a sharper, higher iq image?
A crop sensor will not increase magnification of a lens, only narrow it's field of view. A TC will change the magnification of a lens, will decrease it's f number by the same ratio, and may degrade the image a certain %. You are comparing apples and oranges with this question.
Jun 11, 2015 19:50:12 #
romanticf16 wrote:
A crop sensor will not increase magnification of a lens, only narrow it's field of view. A TC will change the magnification of a lens, will decrease it's f number by the same ratio, and may degrade the image a certain %. You are comparing apples and oranges with this question.
I think you are bringing in factors that are not part of the equation here!
Aperture, lighting, ASA setting etc are for another day, another place.
This is more a digital vs optical zoom fight with particular rules made up by the OP ! :XD:
Jun 11, 2015 21:26:11 #
DaveHam wrote:
Obviously the crop sensor dslr will produce the higher IQ. Adding a teleconverter - any teleconverter - causes a loss however small of image quality.
Can you provide any data to support your claim that a crop sensor will produce higher IQ.
Its not obvious to me.
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