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JMC
Joined: 29 May 2018 Posts: 178 Location: London, UK
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Posted: Tue Aug 28, 2018 1:49 pm Post subject: Canon 20mm f3.5 Macrophoto lens |
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JMC wrote:
Couple of shots of a flower in my garden using the Canon 20mm f3.5 Macrophoto bellows lens. Mounted straight on the camera this time, as I was just trying it out. As these are with the lens mounted directly on the camera without bellows, and I think it gives a 1-2x lifesize image like that. To be honest this lens needs a tripod and additional lighting, especially at higher magnifications. These were taken at ISO2500 and 4000 and f8, and even so, I was at the limit of hand holding it. 2 pictures showing the lens on a camera as well.
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kds315*
Joined: 12 Mar 2008 Posts: 16544 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Tue Aug 28, 2018 4:49 pm Post subject: |
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kds315* wrote:
Very nice Jonathan! Bit used outside its specs (which calls for longer extension), but clearly shows how well this lens works even there!
Here it is on my macrolenses database: http://www.macrolenses.de/ml_detail.php?ObjektiveNr=9 _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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cooltouch
Joined: 15 Jan 2009 Posts: 9097 Location: Houston, Texas
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Posted: Wed Aug 29, 2018 12:03 am Post subject: |
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cooltouch wrote:
Canon also made a 35mm f/2.8 bellows macro lens. I've long wondered how these two lenses perform, and I think these are the first photos I've seen from one.
Back when I was a regular FD shooter, obtaining one of those lenses was always on my "to buy" list, but I never did get one. Nice to finally see one being put to proper use. You should really try them out on bellows, though. _________________ Michael
My Gear List: http://michaelmcbroom.com/photo/gear.html
My Gallery: http://michaelmcbroom.com/gallery3/index.php/
My Flickr Page: https://www.flickr.com/photos/11308754@N08/albums
My Music: https://soundcloud.com/michaelmcbroom/albums
My Blog: http://michaelmcbroom.com/blogistan/ |
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JMC
Joined: 29 May 2018 Posts: 178 Location: London, UK
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Posted: Wed Aug 29, 2018 9:16 am Post subject: |
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JMC wrote:
Thanks Klaus, yes outside of how it's meant to be used, but still I'm very impressed with it.
Cooltouch, definitely, I shall be trying it out either on bellows or using extension rings. These shots were really just to see if it was ok. Even like this, hand holding was virtually impossible, so I shall have to have a good think about how I will hold it and light the subject for using it on bellows/extension tubes. This one came up for auction near to me, and I made the guy an offer on it. I was amazed when I opened the box, that it looked basically unused. Apparently the guys father bought it in the 1980s for some reason and he found it when emptying his fathers house. I shall keep an eye out for the 35mm one too |
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cooltouch
Joined: 15 Jan 2009 Posts: 9097 Location: Houston, Texas
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Posted: Wed Aug 29, 2018 1:27 pm Post subject: |
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cooltouch wrote:
You're gonna have to use a tripod, or some other sort of stable support -- like a copy stand -- when you use that lens with a bellows. What I found to be very useful when working with high magnification, especially when outdoors, was a focusing rail. I bought one of these:
Click here to see on Ebay
It's useful because it allows for small precise movements in both the x and z directions, but not y. Can't have everything, I suppose. I mount my bellows with camera attached directly to this focusing rail, then mount the assembly to my tripod. With this employed, once I have my subject within a reasonable range of the viewfinder, I can use the focusing rail's controls to center the subject and even bring it into precise focus. Very handy for high magnification work. _________________ Michael
My Gear List: http://michaelmcbroom.com/photo/gear.html
My Gallery: http://michaelmcbroom.com/gallery3/index.php/
My Flickr Page: https://www.flickr.com/photos/11308754@N08/albums
My Music: https://soundcloud.com/michaelmcbroom/albums
My Blog: http://michaelmcbroom.com/blogistan/ |
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JMC
Joined: 29 May 2018 Posts: 178 Location: London, UK
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Posted: Wed Aug 29, 2018 3:19 pm Post subject: |
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JMC wrote:
Thanks for the link Cooltouch. I do have a Kaiser copy stand, with a fine control on the vertical, so will give that a go first, however I probably will end up getting a dedicated rail for the fine movements.
As an aside, the 35mm version, there are a few on eBay at the moment but for considerably more than I paid for the 20mm version. I think the 35mm one will have to wait for now.... |
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JMC
Joined: 29 May 2018 Posts: 178 Location: London, UK
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Posted: Thu Aug 30, 2018 11:59 am Post subject: |
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JMC wrote:
While it wasn't raining I tried a couple of shots of a sunflower in UV. These were done with a UV converted Canon Eos 7D, and again without extension tubes. Hazy sunlight, ISO640, f11 and 30 seconds exposure. Mirror lockup and a 2s delay on the shutter. White balanced on a PTFE tile. Camera and flower balanced on the wooden decking in the back garden, and yes I need to get a better support sorted out. The first image is of 2 of the petals, and the second image part of the centre of the flower with the petals in the background.
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Gerald
Joined: 25 Mar 2014 Posts: 1196 Location: Brazil
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Posted: Thu Aug 30, 2018 12:11 pm Post subject: |
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Gerald wrote:
I have a Olympus Zuiko 20mm F3.5 which is very similar to this Canon. The link to the thread about my lens:
http://forum.mflenses.com/viewtopic.php?t=68105 _________________ If raindrops were perfect lenses, the rainbow did not exist. |
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cooltouch
Joined: 15 Jan 2009 Posts: 9097 Location: Houston, Texas
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Posted: Thu Aug 30, 2018 3:47 pm Post subject: |
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cooltouch wrote:
Wow, nice detail. Only thing is, for the subject, even f/11 is a bit lacking as far as depth of field goes. Might be time to try f/16 or higher. If you can do a 30 second exposure with no movement of the subject, you should be able to do longer with little problem. _________________ Michael
My Gear List: http://michaelmcbroom.com/photo/gear.html
My Gallery: http://michaelmcbroom.com/gallery3/index.php/
My Flickr Page: https://www.flickr.com/photos/11308754@N08/albums
My Music: https://soundcloud.com/michaelmcbroom/albums
My Blog: http://michaelmcbroom.com/blogistan/ |
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kds315*
Joined: 12 Mar 2008 Posts: 16544 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Sat Apr 11, 2020 11:00 am Post subject: |
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kds315* wrote:
JMC wrote: |
While it wasn't raining I tried a couple of shots of a sunflower in UV. These were done with a UV converted Canon Eos 7D, and again without extension tubes. Hazy sunlight, ISO640, f11 and 30 seconds exposure. Mirror lockup and a 2s delay on the shutter. White balanced on a PTFE tile. Camera and flower balanced on the wooden decking in the back garden, and yes I need to get a better support sorted out. The first image is of 2 of the petals, and the second image part of the centre of the flower with the petals in the background.
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Missed this one, nicely done Jonathan! Never tried UV with those Canon dedicated macro lenses!! _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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e6filmuser
Joined: 12 Nov 2010 Posts: 582 Location: Reading UK
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Posted: Sat Apr 11, 2020 3:53 pm Post subject: |
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e6filmuser wrote:
There might be something of interest here:
https://www.photomacrography.net/forum/viewtopic.php?t=38216
https://www.photomacrography.net/forum/viewtopic.php?t=36249
https://www.photomacrography.net/forum/viewtopic.php?t=12506 _________________ Dedicated to using manual focus lenses with digital. Equiped for photography from macro to panoramic & from ultra-wide to extreme telephoto. Mostly shooting outdoor macro. Experienced entomological taxonomist. Some knowledge of mushrooms. |
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JMC
Joined: 29 May 2018 Posts: 178 Location: London, UK
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Posted: Sat Apr 11, 2020 8:02 pm Post subject: |
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JMC wrote:
Thanks Klaus. I'd forgotten about this - I must run the Canon 20mm through my lens transmission setup and see how far into the UV it goes.
E6filmuser, cool links. The stacking that people do for these macro images amazes me. I don't have the patience for it at the moment, but later perhaps. |
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Blazer0ne
Joined: 12 Sep 2018 Posts: 836
Expire: 2024-12-07
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Posted: Mon Aug 16, 2021 9:31 pm Post subject: |
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Blazer0ne wrote:
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Last edited by Blazer0ne on Tue Feb 22, 2022 4:09 pm; edited 1 time in total |
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Blazer0ne
Joined: 12 Sep 2018 Posts: 836
Expire: 2024-12-07
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Posted: Thu Oct 14, 2021 12:48 pm Post subject: |
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Blazer0ne wrote:
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Last edited by Blazer0ne on Tue Feb 22, 2022 4:09 pm; edited 1 time in total |
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Blazer0ne
Joined: 12 Sep 2018 Posts: 836
Expire: 2024-12-07
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Posted: Thu Oct 14, 2021 10:07 pm Post subject: |
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Blazer0ne wrote:
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Last edited by Blazer0ne on Tue Feb 22, 2022 4:09 pm; edited 1 time in total |
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Himself
Joined: 01 Mar 2007 Posts: 3216 Location: Montreal
Expire: 2013-05-30
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Posted: Sat Oct 16, 2021 12:37 pm Post subject: |
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Himself wrote:
Blazer0ne wrote: |
.......... I ran into the end of the focus helical.
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Do you have a picture with the whole macro rig? _________________ Moderator Himself |
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Blazer0ne
Joined: 12 Sep 2018 Posts: 836
Expire: 2024-12-07
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Posted: Sat Oct 16, 2021 1:49 pm Post subject: |
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Blazer0ne wrote:
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Last edited by Blazer0ne on Tue Feb 22, 2022 4:09 pm; edited 1 time in total |
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Himself
Joined: 01 Mar 2007 Posts: 3216 Location: Montreal
Expire: 2013-05-30
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Posted: Sat Oct 16, 2021 5:09 pm Post subject: |
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Himself wrote:
That helicoid tube is not good when working at high magnifications.
Put the lens on a dedicated macro rail: Contax, Minolta, Pentax etc.
Hand held is out of the question. _________________ Moderator Himself |
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Blazer0ne
Joined: 12 Sep 2018 Posts: 836
Expire: 2024-12-07
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Posted: Sun Oct 17, 2021 1:24 pm Post subject: |
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Blazer0ne wrote:
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Last edited by Blazer0ne on Tue Feb 22, 2022 5:39 pm; edited 1 time in total |
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jamaeolus
Joined: 19 Mar 2014 Posts: 2931 Location: Eugene
Expire: 2015-08-20
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Posted: Mon Oct 18, 2021 6:38 pm Post subject: |
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jamaeolus wrote:
I've not seen the drop in filter adapter unit. Explain please. _________________ photos are moments frozen in time |
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Himself
Joined: 01 Mar 2007 Posts: 3216 Location: Montreal
Expire: 2013-05-30
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Posted: Mon Oct 18, 2021 8:58 pm Post subject: |
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Himself wrote:
Blazer0ne wrote: |
Of course I use a tripod. I can really dial it in with a video head.
For the macro rail are you referring to something like the Nikon Pb-4 or Pb-5 bellows? |
PB-4 would be my choice due to swing & shift movements. _________________ Moderator Himself |
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dickb
Joined: 04 Apr 2008 Posts: 821
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Posted: Wed Oct 20, 2021 8:49 pm Post subject: |
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dickb wrote:
Blazer0ne wrote: |
I used focus stacking so it was nothing more than a standard M42 macro helical. |
Interesting drop-in rear filter tube - did you 3d print it entirely or did you combine existing hardware?
/Edit/ I just saw your post in the adapter subforum:
http://forum.mflenses.com/mounting-2-filter-drawer-behind-lens-t82992.html
BTW, most people report better stacking results when they vary the distance between camera and subject, either by moving the camera or the subject. Varying the amount of extension can introduce problems for the stacking software. |
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Blazer0ne
Joined: 12 Sep 2018 Posts: 836
Expire: 2024-12-07
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Posted: Thu Oct 21, 2021 4:44 am Post subject: |
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Blazer0ne wrote:
... |
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stevemark
Joined: 29 Apr 2011 Posts: 3754 Location: Switzerland
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Posted: Sat Dec 17, 2022 1:46 pm Post subject: |
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stevemark wrote:
A few years ago I got both the Canon Macro Stage as well as the Canon Auto Bellows for the FD system. Some months later I had the chance to buy a Canon Macro Photo Lens 20mm 1:3.5 with the dedicated Canon Macro Photo Lens Adapter. THese four parts (or a similar other bellows) are necesssary to take good images with the 3.5/20mm Macro lens.
For years the setup was laying around, litteraly collecting dust. Yesterday - on the attic, while looking for something else, I found a small piece of rock I had found as a teen in the Val Nalps (Swiss Alps). Apart from some rutile crystals (titanium dioxide) it had also a tiny (< 0.5mm) yellow crystal from a rare elements mineral (maybe monazite). So finally I took out the Canon 3.5/20mm Macro lens ... and here it is:
Monazite used to be the main mineral for getting rare earth elements, especially lanthanum (which is used in nearly every high performance lens). Later on (from the 1970s) monazite was replaced by bastnäsite, since monazite does contain (radioactive) thorium which is rather difficult to separate.
S _________________ www.artaphot.ch |
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stevemark
Joined: 29 Apr 2011 Posts: 3754 Location: Switzerland
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Posted: Sat Dec 17, 2022 3:39 pm Post subject: |
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stevemark wrote:
Ah yeah, scale is about 10:1, thus still in the recommended range (4:1 ... 10:1). At this level of magnification, the effective aperture is far smaller than the nominal aperture (eg f3.5 wide open). Therefore diffraction kicks in violently when stopping down the lens. The two images above were taken af f8 (nominally). The distance from the sensor to the lens is about 20 cm or tenfold the focal length. Thus I would estimate the effective aperture to be around f32 wide open and around f80 in the images shown above. Of course this results in strong diffraction effects, and in an accordingly reduced detail resolution. A 100% crop from the center 24 MP FF sensor looks quite mediocre:
This, of course, isn't a fault of the lens.
Other than that, at an effective aperture of around f100, any dust on the sensor is a huge issue. Even small particles with a diameter of maybe 20 micrometer can create spots on image (with a diffraction induced onion / donut pattern).
S _________________ www.artaphot.ch |
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