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visualopsins
Joined: 05 Mar 2009
Posts: 10530
Location: California
Expire: 2025-04-11
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 Posted: Thu Feb 07, 2019 6:15 am Post subject: |
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visualopsins wrote:
| e6filmuser wrote: |
| ... Blowing up the images to the same size as one from a full frame sensor spreads the light out further, effectively, a smaller aperture from the point of view of exposure... |
You meant "from the point of view of dof" not exposure. 
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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e6filmuser
Joined: 12 Nov 2010
Posts: 555
Location: Reading UK
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| Posted: Thu Feb 07, 2019 6:39 am Post subject: |
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e6filmuser wrote:
| visualopsins wrote: |
| e6filmuser wrote: |
| ... Blowing up the images to the same size as one from a full frame sensor spreads the light out further, effectively, a smaller aperture from the point of view of exposure... |
You meant "from the point of view of dof" not exposure. |
This was wrong. I meant DOF. The spreading of light to effect exposure is relevant to extensions, magnifications and TCs and is not about sensor size.
_________________
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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visualopsins
Joined: 05 Mar 2009
Posts: 10530
Location: California
Expire: 2025-04-11
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| Posted: Thu Feb 07, 2019 9:13 am Post subject: |
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visualopsins wrote:
| e6filmuser wrote: |
| visualopsins wrote: |
| e6filmuser wrote: |
| ... Blowing up the images to the same size as one from a full frame sensor spreads the light out further, effectively, a smaller aperture from the point of view of exposure... |
You meant "from the point of view of dof" not exposure. |
This was wrong. I meant DOF. The spreading of light to effect exposure is relevant to extensions, magnifications and TCs and is not about sensor size. |
Correct!
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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Lucse
Joined: 22 Jul 2015
Posts: 166
Location: EU
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| Posted: Thu Feb 07, 2019 8:19 pm Post subject: |
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Lucse wrote:
I have two of these lenses and willing to sell one, if somebody is interested. |
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e6filmuser
Joined: 12 Nov 2010
Posts: 555
Location: Reading UK
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| Posted: Fri Feb 08, 2019 5:43 pm Post subject: |
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e6filmuser wrote:
| Lucse wrote: |
| I have two of these lenses and willing to sell one, if somebody is interested. |
Have you tried reversing one on the other for macro? 
_________________
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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Lucse
Joined: 22 Jul 2015
Posts: 166
Location: EU
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| Posted: Fri Feb 08, 2019 9:40 pm Post subject: |
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Lucse wrote:
| e6filmuser wrote: |
| Lucse wrote: |
| I have two of these lenses and willing to sell one, if somebody is interested. |
Have you tried reversing one on the other for macro? |
... I am (probably) too stupid to get the joke... |
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e6filmuser
Joined: 12 Nov 2010
Posts: 555
Location: Reading UK
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| Posted: Sun Feb 10, 2019 10:17 am Post subject: |
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e6filmuser wrote:
| Lucse wrote: |
| e6filmuser wrote: |
| Lucse wrote: |
| I have two of these lenses and willing to sell one, if somebody is interested. |
Have you tried reversing one on the other for macro? |
... I am (probably) too stupid to get the joke... |
Not a serious proposition.
One technique is to reverse a lens onto the front of another mounted normally on the camera. The combined diopters and short focusing distance can give good results. It is far more likely that two 50mm lenses would be used than two 350mm. However, maybe nobody has been in your unique position of owning two.
_________________
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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Lucse
Joined: 22 Jul 2015
Posts: 166
Location: EU
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| Posted: Sun Feb 10, 2019 5:29 pm Post subject: |
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Lucse wrote:
| e6filmuser wrote: |
| Lucse wrote: |
| e6filmuser wrote: |
| Lucse wrote: |
| I have two of these lenses and willing to sell one, if somebody is interested. |
Have you tried reversing one on the other for macro? |
... I am (probably) too stupid to get the joke... |
Not a serious proposition.
One technique is to reverse a lens onto the front of another mounted normally on the camera. The combined diopters and short focusing distance can give good results. It is far more likely that two 50mm lenses would be used than two 350mm. However, maybe nobody has been in your unique position of owning two. |
I've got two Tamron 500mm f/8 (catadioptric) lenses as well. That would look even more impressive (and stupid, I guess) to use them as 'twin-lens-reverse'-macro set-up.
Although I seriously doubt if it's possible to use catadioptric lenses this way.
But if somebody has a 82mm coupling ring laying around I am willing to give it a try (and no, I am not willing to duck-tape them together  ).
If it would work I would get a 500mm macro lens that gives a 1:1 magnification. (The main lens mm divided by the reversed lens mm gives the stacked lens magnification).
And that would be very hard to work with I reckon.
This makes me think: does anybody know what the focal-lenght of the longest 'normal' macro-lens is? (200mm according to me, but is that so?) |
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kds315*
Joined: 12 Mar 2008
Posts: 16541
Location: Weinheim, Germany
Expire: 2021-03-09
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| Posted: Mon Feb 11, 2019 8:46 am Post subject: |
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kds315* wrote:
| Lucse wrote: |
| e6filmuser wrote: |
| Lucse wrote: |
| e6filmuser wrote: |
| Lucse wrote: |
| I have two of these lenses and willing to sell one, if somebody is interested. |
Have you tried reversing one on the other for macro? |
... I am (probably) too stupid to get the joke... |
Not a serious proposition.
One technique is to reverse a lens onto the front of another mounted normally on the camera. The combined diopters and short focusing distance can give good results. It is far more likely that two 50mm lenses would be used than two 350mm. However, maybe nobody has been in your unique position of owning two. |
I've got two Tamron 500mm f/8 (catadioptric) lenses as well. That would look even more impressive (and stupid, I guess) to use them as 'twin-lens-reverse'-macro set-up.
Although I seriously doubt if it's possible to use catadioptric lenses this way.
But if somebody has a 82mm coupling ring laying around I am willing to give it a try (and no, I am not willing to duck-tape them together ).
If it would work I would get a 500mm macro lens that gives a 1:1 magnification. (The main lens mm divided by the reversed lens mm gives the stacked lens magnification).
And that would be very hard to work with I reckon.
This makes me think: does anybody know what the focal-lenght of the longest 'normal' macro-lens is? (200mm according to me, but is that so?) |
Well, that setup would make about the slowest macro lens ever made... 
I have a 800mm Long Distance Microscope, not really "normal" for the normal guy in the streets, but for me it is
_________________
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: 555
Location: Reading UK
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| Posted: Mon Feb 11, 2019 9:25 am Post subject: |
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e6filmuser wrote:
| Lucse wrote: |
This makes me think: does anybody know what the focal-lenght of the longest 'normal' macro-lens is? (200mm according to me, but is that so?) |
The Olympus 4/3 70-300mm ED does 1:2 at 300mm.
_________________
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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Lucse
Joined: 22 Jul 2015
Posts: 166
Location: EU
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| Posted: Mon Feb 11, 2019 6:24 pm Post subject: |
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Lucse wrote:
| kds315* wrote: |
| I have a 800mm Long Distance Microscope, not really "normal" for the normal guy in the streets, but for me it is |
I am not that much into macro-photography. So I had never heard of Long Distance Microscopes.
But I must say; a whole new world opens up for me .
| e6filmuser wrote: |
The Olympus 4/3 70-300mm ED does 1:2 at 300mm. |
OK, not bad...but did you have a look at those Long Distance Microscopes? |
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e6filmuser
Joined: 12 Nov 2010
Posts: 555
Location: Reading UK
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| Posted: Mon Feb 11, 2019 6:41 pm Post subject: |
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e6filmuser wrote:
| Lucse wrote: |
OK, not bad...but did you have a look at those Long Distance Microscopes? |
With DOF of around 0.05mm, I wouldn't have a use. I have avoided looking up the prices as I have a blood pressure problem 
_________________
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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Lucse
Joined: 22 Jul 2015
Posts: 166
Location: EU
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| Posted: Mon Feb 11, 2019 7:11 pm Post subject: |
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Lucse wrote:
| e6filmuser wrote: |
With DOF of around 0.05mm, I wouldn't have a use. I have avoided looking up the prices as I have a blood pressure problem |
OK, that blood pressure problem is not good news. Does it make you cough as well?
If so, you can cough up some more money to buy an (electronic controlled) automated motorized focus stacking macro rail.
That solves the 0,05 DOF-problem . |
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e6filmuser
Joined: 12 Nov 2010
Posts: 555
Location: Reading UK
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| Posted: Mon Feb 11, 2019 7:40 pm Post subject: |
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e6filmuser wrote:
| Lucse wrote: |
| e6filmuser wrote: |
With DOF of around 0.05mm, I wouldn't have a use. I have avoided looking up the prices as I have a blood pressure problem |
OK, that blood pressure problem is not good news. Does it make you cough as well?
If so, you can cough up some more money to buy an (electronic controlled) automated motorized focus stacking macro rail.
That solves the 0,05 DOF-problem . |
I do my macro hand-held. I would need some bionics first!
_________________
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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kds315*
Joined: 12 Mar 2008
Posts: 16541
Location: Weinheim, Germany
Expire: 2021-03-09
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| Posted: Mon Feb 11, 2019 7:40 pm Post subject: |
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kds315* wrote:
Guys, your veering off massively here. This is a thread about the Tamron SP 350mm mirror lens. Stay with that please!
I'm about to cut all this unrelated discussion off and place in in a seperate thread named, well not sure yet..
And btw e6filmuser, macro starts per definition at 1:1 (1x), you talk about "close-up" ....
_________________
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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visualopsins
Joined: 05 Mar 2009
Posts: 10530
Location: California
Expire: 2025-04-11
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| Posted: Mon Feb 11, 2019 8:22 pm Post subject: |
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visualopsins wrote:
Off topic & cross posting enrich rather than detract from a discussion imho.
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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visualopsins
Joined: 05 Mar 2009
Posts: 10530
Location: California
Expire: 2025-04-11
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| Posted: Mon Feb 11, 2019 8:28 pm Post subject: |
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visualopsins wrote:
| kds315* wrote: |
Guys, your veering off massively here. This is a thread about the Tamron SP 350mm mirror lens. Stay with that please!
I'm about to cut all this unrelated discussion off and place in in a seperate thread named, well not sure yet..
And btw e6filmuser, macro starts per definition at 1:1 (1x), you talk about "close-up" .... |
The last sentence appears to contradict the request of the first.
By whose definition is macro 1:1? References please!
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (51BB), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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e6filmuser
Joined: 12 Nov 2010
Posts: 555
Location: Reading UK
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| Posted: Mon Feb 11, 2019 9:04 pm Post subject: |
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e6filmuser wrote:
| kds315* wrote: |
Guys, your veering off massively here. This is a thread about the Tamron SP 350mm mirror lens. Stay with that please!
I'm about to cut all this unrelated discussion off and place in in a seperate thread named, well not sure yet..
And btw e6filmuser, macro starts per definition at 1:1 (1x), you talk about "close-up" .... |
Not in the macro forums I subscribe to. Not that it matters. It's arbitrary.
_________________
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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Lucse
Joined: 22 Jul 2015
Posts: 166
Location: EU
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| Posted: Mon Feb 11, 2019 10:02 pm Post subject: |
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Lucse wrote:
| kds315* wrote: |
Guys, your veering off massively here. This is a thread about the Tamron SP 350mm mirror lens. Stay with that please!
I'm about to cut all this unrelated discussion off and place in in a seperate thread named, well not sure yet..
And btw e6filmuser, macro starts per definition at 1:1 (1x), you talk about "close-up" .... |
Well, you could start with erasing your:
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| (Oh look at me) I have a 800mm Long Distance Microscope, not really "normal" for the normal guy in the streets, but for me it is. |
... and this in the MeToo times. 
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Lucse
Joined: 22 Jul 2015
Posts: 166
Location: EU
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| Posted: Thu Feb 14, 2019 2:48 pm Post subject: |
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Lucse wrote:
Only slightly off-topic:
I just discovered that deep in my closet I have a third copy of these Tamron 350 f/5.6 lenses laying around.
Might this be some indication that I have lens lust ? |
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e6filmuser
Joined: 12 Nov 2010
Posts: 555
Location: Reading UK
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| Posted: Sat Feb 16, 2019 12:03 pm Post subject: |
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e6filmuser wrote:
Two shots with the lens on m4/3. The first at a distance of ca 150 feet, the second at closer to 15 feet. The first was with my back to the sun, the second with it to my left. The images are uncropped.
_________________
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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woodrim
Joined: 14 Jan 2010
Posts: 4060
Location: Charleston
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| Posted: Wed Aug 12, 2020 2:24 pm Post subject: |
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woodrim wrote:
Rather than start a new thread, I'm adding to this one. This is the last of many mirrors I've acquired and the best at closer distances. Quite amazing, actually, for a mirror.
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Regards,
Woodrim |
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calvin83
Joined: 12 Apr 2009
Posts: 7553
Location: Hong Kong
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| Posted: Wed Aug 12, 2020 2:28 pm Post subject: |
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calvin83 wrote:
 
_________________
https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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e6filmuser
Joined: 12 Nov 2010
Posts: 555
Location: Reading UK
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| Posted: Sun Aug 08, 2021 9:11 am Post subject: |
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e6filmuser wrote:
I decided to give it a trial on typical insects in the field (a meadow).
I use my EM-1 almost every day of the year and it feels like part of me. For telemacro I can use the Panasonic 100-400mm, which I can mostly hold steady at 400mm.
The A7r3 FF is a camera I take out occasionally and it still doesn't feel familiar in my hand. The Panasonic does not work on it. I had the 350mm, with the Tamron 140F 1.4x TC behind it, giving ca 500mm FL at about f7.8. I was struggling with holding it steady. I took various shots at minimum focus distance, mostly having to move back from where I though I should be.
The image probably reflects my difficulties. It took quite a lot of sharpening to make it presentable. It is uncropped, showing a grasshopper of typical field grasshopper size. The only way of making it larger in the frame is to use a x2TC, although without the x1.4 it would still be of acceptable size.
This shows possibilities for if I am out with just the A7r3. I will have to try again.
_________________
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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woodrim
Joined: 14 Jan 2010
Posts: 4060
Location: Charleston
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| Posted: Sun Aug 08, 2021 3:57 pm Post subject: |
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woodrim wrote:
You are probably stretching the usefulness of that mirror with that type of photography. You might do a tad better with a narrow spacer rather than the 1.4 TC. I have used a narrow extension ring on one of my 300mm mirrors to get closer to flowers but not for insects. A high mp sensor like yours will certainly help by having greater crop ability. In fact, I wonder if you'd do better having the greater DoF from farther away and cropping.
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Regards,
Woodrim |
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