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Doc Sharptail
Joined: 23 Nov 2020
Posts: 987
Location: Winnipeg Canada
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 Posted: Fri Jul 23, 2021 8:01 am Post subject: Tamron SP 500mm f8 (BBAR) |
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Doc Sharptail wrote:
As a 60-70 ft/15-18m portrait lens, not too shabby.
1/250 sec at ISO 200, D-200.
Wildlife needs to learn to sit still for their portrait.
These Ravens were fighting over food scraps in this aluminum foil.
I was fortunate to get one sort of in focus.
1/250 sec at about 65 feet/16 meters.
Another smoky sunset.
Not quite to the hard infinity stop.
1/60 sec.
C-130 Hercules in the foreground.
From 30 Meters to the Infinity stop is a bit on the tight side.
Focusing requires a feather touch, and naturally enough, a tripod.
Well over 1/2 kilometer from the sensor  plane.
1/125 sec.
Swang 'Stang. Front end is up on blocks.
1/125 sec.
Lens is not quite what I was hoping for.
It is difficult to use at extended distances.
It does have some very, very fine points, as shown above.
I may have to do something different for deer at a distance~ like a long E.D. Nikkor super telephoto...
-D.S.
_________________
D-810, F2, FTN.
35mm f2 O.C. nikkor
50 f2 H nikkor, 50 f 1.4 AI-s, 135 f3.5 Q,
50 f2 K nikkor 2x, 28-85mm f3.5-4.5 A/I-s, 35-105 3.5-4.5 A/I-s, 200mm f4 Micro A/I, partial list.
"Ain't no half-way" -S.R.V.
"Oh Yeah... Alright" -Paul Simon |
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visualopsins
Joined: 05 Mar 2009
Posts: 10531
Location: California
Expire: 2025-04-11
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| Posted: Fri Jul 23, 2021 1:47 pm Post subject: |
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visualopsins wrote:
Which one? (both have BBAR) 
http://adaptall-2.com/lenses/55B.html
http://adaptall-2.com/lenses/55BB.html
Thanks!
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ 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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Doc Sharptail
Joined: 23 Nov 2020
Posts: 987
Location: Winnipeg Canada
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| Posted: Fri Jul 23, 2021 4:33 pm Post subject: |
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Doc Sharptail wrote:
It is the earlier 55 B.
-D.S.
_________________
D-810, F2, FTN.
35mm f2 O.C. nikkor
50 f2 H nikkor, 50 f 1.4 AI-s, 135 f3.5 Q,
50 f2 K nikkor 2x, 28-85mm f3.5-4.5 A/I-s, 35-105 3.5-4.5 A/I-s, 200mm f4 Micro A/I, partial list.
"Ain't no half-way" -S.R.V.
"Oh Yeah... Alright" -Paul Simon |
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cooltouch
Joined: 15 Jan 2009
Posts: 9097
Location: Houston, Texas
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| Posted: Fri Jul 23, 2021 5:35 pm Post subject: |
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cooltouch wrote:
I have the 55BB and some 35 years experience with mirrors. I found, soon after the beginning of my experience with mirrors, that it takes practice and paying attention to good technique if I wanted keepers. Back in my film days, I found it very helpful to use an eyepiece magnifier with a camera that had a plain matte focusing screen. I was able to dial in exact focus that way. Not exactly the best setup when shooting moving subjects, but it did work well.
These days, many digital cameras have the ability to bump up magnification, so that you can do much the same thing. This is the way I routinely use my Tamron 500 nowadays, and it has resulted in critically sharp images.
_________________
Michael
My Gear List: http://michaelmcbroom.com/photo/gear.html
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Doc Sharptail
Joined: 23 Nov 2020
Posts: 987
Location: Winnipeg Canada
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| Posted: Fri Jul 23, 2021 6:11 pm Post subject: |
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Doc Sharptail wrote:
It's a 16 year old D-200 I'm using.
An eye-piece magnifier would go a long ways towards using this lens properly.
I set the eye-piece diopter to work with my +250 readers.
I'm too far sighted to use the eyepiece without optical correction- just a matter of rapidly advancing age.
I think finding a rubber eye-cup to go up against the lens of my glasses would help a lot.
-D.S.
_________________
D-810, F2, FTN.
35mm f2 O.C. nikkor
50 f2 H nikkor, 50 f 1.4 AI-s, 135 f3.5 Q,
50 f2 K nikkor 2x, 28-85mm f3.5-4.5 A/I-s, 35-105 3.5-4.5 A/I-s, 200mm f4 Micro A/I, partial list.
"Ain't no half-way" -S.R.V.
"Oh Yeah... Alright" -Paul Simon |
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cooltouch
Joined: 15 Jan 2009
Posts: 9097
Location: Houston, Texas
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| Posted: Sat Jul 24, 2021 1:15 pm Post subject: |
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cooltouch wrote:
Something else I do as a matter of course with my 500mm Tamron, is I will take multiple photos of a subject, refocusing before each exposure. I find that it improves my odds somewhat that I'll get one very sharp photo out of several that are only just sharp.
_________________
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
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Doc Sharptail
Joined: 23 Nov 2020
Posts: 987
Location: Winnipeg Canada
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| Posted: Sat Jul 24, 2021 5:22 pm Post subject: |
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Doc Sharptail wrote:
You are correct about multiple images with refocusing each frame.
I actually took 11 or 12 frames before I found the detail I wanted.
Focus confirmation is useless with this lens- at least on the D-200.
Full "Buck" moon.
1/250 sec ISO 400. Tripod.
That's as sharp as it's going to get, shooting through all the wildfire smoke.
Still not quite to the hard infinity stop.
I focused on the edge of the large crater at upper left.
Breathe on the straight ribbed focus sleeve, and focus will change...
Pocket knife.
1/60 sec ISO 400.
Note pocket lint caught on the sharp edge.
6-3/4 feet according to the focus scale.
Indiglo wrist watch with raven dropping.
1/125 sec ISO 400. 6-3/4 feet again.
I will try with Luna again on the next fingernail phase.
Detail gets washed out by strong light on the full phase...
-D.S.
_________________
D-810, F2, FTN.
35mm f2 O.C. nikkor
50 f2 H nikkor, 50 f 1.4 AI-s, 135 f3.5 Q,
50 f2 K nikkor 2x, 28-85mm f3.5-4.5 A/I-s, 35-105 3.5-4.5 A/I-s, 200mm f4 Micro A/I, partial list.
"Ain't no half-way" -S.R.V.
"Oh Yeah... Alright" -Paul Simon |
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cooltouch
Joined: 15 Jan 2009
Posts: 9097
Location: Houston, Texas
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| Posted: Sat Jul 24, 2021 9:53 pm Post subject: |
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cooltouch wrote:
| Doc Sharptail wrote: |
I will try with Luna again on the next fingernail phase.
Detail gets washed out by strong light on the full phase...
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Please do so. Your Tamron 500 is capable of producing much sharper moon shots than the one you show. As for the full moon, I personally like to shoot pics of it a couple days before or after the full phase. Features are flat at full, whereas a couple days before or after, the moon is at a slight angle and the shadows are better, which serves to define surface features better, I find.
Correct exposure for the moon is 1/125 at f/8 (or f/11 if you have an aperture, which often yields better contrast) at ISO 100. You were overexposing by about a stop, although your photo isn't really showing any indication of overexposure.
Here is a shot I took with my Tamron 500 of the moon in a waning gibbous phase, several days past full. Please note, this is a color image. The Tamron even picked up some slight yellow and bluish tinges to the moons surface.
Sony NEX7, 1/125, ISO 100, Tamron 500mm f/8 55BB
_________________
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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Doc Sharptail
Joined: 23 Nov 2020
Posts: 987
Location: Winnipeg Canada
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| Posted: Sat Jul 24, 2021 10:28 pm Post subject: |
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Doc Sharptail wrote:
I will be trying this again, perhaps with a higher moon.
It is very low in the sky on this phase.
I did my test frames in color and they were terribly brown from atmospheric conditions- which probably led to the exposure I ended up with.
I may not have to wait so long. The arc of the full moon in August is a lot higher....
I'm having a great time trying. It is time well spent for me.
-D.S.
_________________
D-810, F2, FTN.
35mm f2 O.C. nikkor
50 f2 H nikkor, 50 f 1.4 AI-s, 135 f3.5 Q,
50 f2 K nikkor 2x, 28-85mm f3.5-4.5 A/I-s, 35-105 3.5-4.5 A/I-s, 200mm f4 Micro A/I, partial list.
"Ain't no half-way" -S.R.V.
"Oh Yeah... Alright" -Paul Simon |
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Doc Sharptail
Joined: 23 Nov 2020
Posts: 987
Location: Winnipeg Canada
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| Posted: Tue Jul 27, 2021 7:56 am Post subject: |
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Doc Sharptail wrote:
Argyle building.
Bank of Nova Scotia in long evening sunrays.
Lindsay building parapet runner.
Lindsay Building parapet runner.
Paris Building gargoyle.
Paris Building Bas-relief.
These buildings are all over 100 years old.
Most of the stone-work is badly weather eroded.
-D.S.
_________________
D-810, F2, FTN.
35mm f2 O.C. nikkor
50 f2 H nikkor, 50 f 1.4 AI-s, 135 f3.5 Q,
50 f2 K nikkor 2x, 28-85mm f3.5-4.5 A/I-s, 35-105 3.5-4.5 A/I-s, 200mm f4 Micro A/I, partial list.
"Ain't no half-way" -S.R.V.
"Oh Yeah... Alright" -Paul Simon |
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Doc Sharptail
Joined: 23 Nov 2020
Posts: 987
Location: Winnipeg Canada
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| Posted: Mon Aug 16, 2021 2:56 am Post subject: |
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Doc Sharptail wrote:
B.B.A.R. = Broad Band Anti Reflex.
Tamron's designation for coatings on some of their lenses.
Lesser moon phases still have atmospheric interference in the form of smoke.
This may take a while...
-D.S.
_________________
D-810, F2, FTN.
35mm f2 O.C. nikkor
50 f2 H nikkor, 50 f 1.4 AI-s, 135 f3.5 Q,
50 f2 K nikkor 2x, 28-85mm f3.5-4.5 A/I-s, 35-105 3.5-4.5 A/I-s, 200mm f4 Micro A/I, partial list.
"Ain't no half-way" -S.R.V.
"Oh Yeah... Alright" -Paul Simon |
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Doc Sharptail
Joined: 23 Nov 2020
Posts: 987
Location: Winnipeg Canada
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| Posted: Wed Nov 24, 2021 8:55 pm Post subject: |
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Doc Sharptail wrote:
I bought a newer version of this lens the other day, and found out a few things.
The newer lens is still the straight ribbed focus grip.
It came with the tripod collar and full filter set.
I went to the on-line Butkus manual for it to determine filter use.
The manual states that the lens is designed to focus with a rear mounted filter, and should not be used without a filter in place.
I found a filter over the rear element marked "Normal".
It appears to be about the same as every other U/V filter I've experienced- very slightly grey in color.
This may be part of the problem with critical focusing near infinity for me.
The glass on the newer lens is absolutely perfect.
It has a different front hood than the earlier version.
It can be threaded onto the lens upside down for storage.
The earlier hood lacked the extra threads.
Now to wait for it to be warm enough outside to not fog the glass...
The up-dated adapt-All-2 nikon mount is much improved- very positive locking.
It lacks the dummy aperture lever and A/I-s scoop.
-D.S.
_________________
D-810, F2, FTN.
35mm f2 O.C. nikkor
50 f2 H nikkor, 50 f 1.4 AI-s, 135 f3.5 Q,
50 f2 K nikkor 2x, 28-85mm f3.5-4.5 A/I-s, 35-105 3.5-4.5 A/I-s, 200mm f4 Micro A/I, partial list.
"Ain't no half-way" -S.R.V.
"Oh Yeah... Alright" -Paul Simon |
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visualopsins
Joined: 05 Mar 2009
Posts: 10531
Location: California
Expire: 2025-04-11
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| Posted: Wed Nov 24, 2021 9:49 pm Post subject: |
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visualopsins wrote:
| Doc Sharptail wrote: |
...
Now to wait for it to be warm enough outside to not fog the glass...
... |
I don't understand.
From inside warm to outside cold no problem.
Simply avoid breathing on cold lens outside because humid breath condenses on cold surfaces; also avoid moving cold lens into warmer environment to prevent moisture in the warmer air onto cold lens surfaces.
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ 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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Doc Sharptail
Joined: 23 Nov 2020
Posts: 987
Location: Winnipeg Canada
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| Posted: Thu Nov 25, 2021 4:08 am Post subject: |
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Doc Sharptail wrote:
| visualopsins wrote: |
| also avoid moving cold lens into warmer environment to prevent moisture in the warmer air onto cold lens surfaces. |
I got the big enough bag for this- just need the dessicant silica-gel packets which I'm out of at the moment.
I'm a little fungus paranoid in the winter time.
Almost -20 C here as I type this- about 0 F. IIRC.
It can wait a little longer.
-D.S.
_________________
D-810, F2, FTN.
35mm f2 O.C. nikkor
50 f2 H nikkor, 50 f 1.4 AI-s, 135 f3.5 Q,
50 f2 K nikkor 2x, 28-85mm f3.5-4.5 A/I-s, 35-105 3.5-4.5 A/I-s, 200mm f4 Micro A/I, partial list.
"Ain't no half-way" -S.R.V.
"Oh Yeah... Alright" -Paul Simon |
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Doc Sharptail
Joined: 23 Nov 2020
Posts: 987
Location: Winnipeg Canada
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| Posted: Sun Nov 28, 2021 10:11 pm Post subject: |
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Doc Sharptail wrote:
Managed to get a few frames yesterday.
I had a lot of trouble with stray light entering through the viewfinder in the bright snow glare.
1/80 sec ISO 125. Handheld.
Not quite a fast enough shutter speed to eliminate motion blur with a lens this long.
1/400 sec at iSO 125. A little better.
1/500 sec at ISO 125.
Out of focus points of light reflecting off of river ice. 1/400 sec at ISO 125.
Under compact fluorescent light at ISO 6400. AWB and minimum focus distance. 1/125 sec. handheld.
Control frame taken with the nikkor 50mm f2 at f-8, 1/125 sec ISO 6400 hand held.
The nikkor deals with the greenish yellow cast a lot better, and is less susceptible to motion blur at the same shutter speed. Handheld.
-D.S.
_________________
D-810, F2, FTN.
35mm f2 O.C. nikkor
50 f2 H nikkor, 50 f 1.4 AI-s, 135 f3.5 Q,
50 f2 K nikkor 2x, 28-85mm f3.5-4.5 A/I-s, 35-105 3.5-4.5 A/I-s, 200mm f4 Micro A/I, partial list.
"Ain't no half-way" -S.R.V.
"Oh Yeah... Alright" -Paul Simon |
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Olivier
Joined: 18 Feb 2009
Posts: 5077
Location: France
Expire: 2015-08-06
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| Posted: Sun Dec 19, 2021 10:54 am Post subject: |
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Olivier wrote:
Hello.
I have the first model and I believe you should obtain sharper results.
Could this be due to the D200 viewfinder ? Did you try to take 3 shots, moving just a little the focusing ring around the focusing point ?
With old Canon 40D and the Tamron Bbar 500mm f8 :
http://forum.mflenses.com/visit-at-the-zoo-tamron-sp-500-f8-part-1-t37284,highlight,%2Btamron+%2Bsp+%2B500.html
http://forum.mflenses.com/visit-at-the-zoo-tamron-sp-500-f8-part-2-t37287,highlight,%2Btamron+%2Bsp+%2B500.html
With Canon 5D Mark II
http://forum.mflenses.com/tamron-sp-500mm-f8-t49322,highlight,%2Btamron+%2Bsp+%2B500.html
http://forum.mflenses.com/cat-with-a-cat-lens-tamron-sp-500-f8-t36498,highlight,%2Btamron+%2Bsp+%2B500.html
With Olympus Pen-EP2
http://forum.mflenses.com/tamron-sp-500mm-f8-on-pen-e-p2-t46862,highlight,%2Btamron+%2Bsp+%2B500.html
Moon shots
http://forum.mflenses.com/moon-shots-with-different-combos-tamron-sp-500-f8-t64913,highlight,%2Btamron+%2Bsp+%2B500.html
Have a nice day.
_________________
Olivier - Moderator 
Dslr : Olympus Pen E-P2 - Fujifilm X-Pro2 - Canon 5D MkII.
SLr and MF lenses : for feedback and helping people, cameras and lenses I own : full list here http://forum.mflenses.com/viewtopic,p,1442740.html#1442740 |
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cooltouch
Joined: 15 Jan 2009
Posts: 9097
Location: Houston, Texas
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| Posted: Sun Dec 19, 2021 5:25 pm Post subject: |
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cooltouch wrote:
| Doc Sharptail wrote: |
I bought a newer version of this lens the other day, and found out a few things.
The newer lens is still the straight ribbed focus grip.
It came with the tripod collar and full filter set.
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Just a bit of an FYI: this lens you describe is the 55B, which is actually the first model. The first model of this lens has the tripod mount and the built-in filter set. The second version, the 55BB, has no tripod collar or built-in filters. There is a slight difference in optical design between the two lenses, but the difference is negligible in terms of actual performance.
_________________
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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visualopsins
Joined: 05 Mar 2009
Posts: 10531
Location: California
Expire: 2025-04-11
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| Posted: Sun Dec 19, 2021 8:28 pm Post subject: |
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visualopsins wrote:
| cooltouch wrote: |
| Doc Sharptail wrote: |
I bought a newer version of this lens the other day, and found out a few things.
The newer lens is still the straight ribbed focus grip.
It came with the tripod collar and full filter set.
|
Just a bit of an FYI: this lens you describe is the 55B, which is actually the first model. The first model of this lens has the tripod mount and the built-in filter set. The second version, the 55BB, has no tripod collar or built-in filters. There is a slight difference in optical design between the two lenses, but the difference is negligible in terms of actual performance. |
55BB is said to be better close-up. Have you tested side-by-side?
_________________
☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ 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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cooltouch
Joined: 15 Jan 2009
Posts: 9097
Location: Houston, Texas
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| Posted: Mon Dec 20, 2021 5:14 pm Post subject: |
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cooltouch wrote:
No, I don't own or have access to a 55B. Regarding the change in optical design, Adaptall-2.com states:
"The major optical design change is the switch to a constant thickness meniscus main mirror in order to reduce close focusing spherical aberration."
They go on to suggest the possibility that 55B might be superior in the sharpness of far-off subjects and that 55BB might be better with close-in subjects. But it is just conjecture. I would like to see the two tested side by side.
_________________
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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