Full lens details:
Carl Zeiss Jenazoom-2 35-70mm f3.5-4.8 MC macro.
This is with the lens temporarily modified as here:
http://www.photomacrography.net/forum/v ... hp?t=18243
and has relevance to this topic:
http://www.photomacrography.net/forum/v ... hp?t=18237
which, in turn, arose from this topic:
http://www.photomacrography.net/forum/v ... hp?t=18225
which arose for my lens envy.
The point is that this lens is a zoom and can give different magnifcations on a given extension.
Here are some shots with the lens reversed on 65mm of extension, using f8 or f11 set on the lens and at 35mm focal length. This gives a field of view 4mm wide across the long axis of the image.
I used a tripod but there was intermittent light air movement affecting the subject, a Valerian flower. Exposures were 1/2 or 1/3 second. The images have not been cropped:
Centre of flower (at f11?):
Anther (at f11?):
Anther at f8:
Anther at f11:
The question about the aperture is because the zoom and focus operation knocked the f11 to f8 at some stage.
The change of view and slight change of magnification are due to repositioning the tripd and camera distance.
These images are far away from gallery quality but are a starting point.
The first one has some interesting flare and the last one has some kind of colour fringe which may be due to slight motion blur.
Harold
First Images From Reversed Carl Zeiss 35-70 On Extension
Moderators: rjlittlefield, ChrisR, Chris S., Pau
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First Images From Reversed Carl Zeiss 35-70 On Extension
My images are a medium for sharing some of my experiences: they are not me.
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Chris,
Although I started into macro, in the 1980s, with Tamron SP flat field lenses, I have never been much concerned about edge/corner performance. I can see that it would be an issue for those who like to image fields of lepidopteran scales and suchlike. Of course, I am seeing only the middle half of the image anyway with my EP-2.
It is another matter outside of macro, where I expect good corner sharpness for my ultra-wideangle lenses used for shots of buildings.
Harold
Although I started into macro, in the 1980s, with Tamron SP flat field lenses, I have never been much concerned about edge/corner performance. I can see that it would be an issue for those who like to image fields of lepidopteran scales and suchlike. Of course, I am seeing only the middle half of the image anyway with my EP-2.
It is another matter outside of macro, where I expect good corner sharpness for my ultra-wideangle lenses used for shots of buildings.
Harold
My images are a medium for sharing some of my experiences: they are not me.
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- Posts: 5786
- Joined: Sun Mar 09, 2008 2:17 am
- Location: Reading, Berkshire, England
Comparison can now be made with images of the Valerian anthers made, camera hand-held, with a Photar and with flash illumination
http://www.photomacrography.net/forum/v ... 950#115950
(The last two images in the set).
Harold
http://www.photomacrography.net/forum/v ... 950#115950
(The last two images in the set).
Harold
My images are a medium for sharing some of my experiences: they are not me.