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Tele-Lentar 2.8/135 on Panasonic Lumix G2
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PostPosted: Thu Apr 18, 2013 4:02 am    Post subject: Tele-Lentar 2.8/135 on Panasonic Lumix G2 Reply with quote
I've been more than impressed with this lens, has great contrast and good sharpness, and it's built like a tank!











PostPosted: Thu Apr 18, 2013 4:11 am    Post subject: Reply with quote
Looks like a winning combination from the photos you posted.

135mm, you were quite close to the subjects you were shooting.


PostPosted: Thu Apr 18, 2013 5:32 am    Post subject: Reply with quote
my_photography wrote:
Looks like a winning combination from the photos you posted.

135mm, you were quite close to the subjects you were shooting.


Except for the owls, yes, fairly close. The Lumix is a 2.0 crop.

Forgot to mention, most of these were shot at 5.6-11


PostPosted: Thu Apr 18, 2013 6:34 am    Post subject: Reply with quote
The first two for a manual lens show a great skill on focussing! Very nice shots.


PostPosted: Thu Apr 18, 2013 6:55 pm    Post subject: Reply with quote
bhargav wrote:
The first two for a manual lens show a great skill on focussing! Very nice shots.


+1 - awesome shots


PostPosted: Sat Apr 20, 2013 3:46 pm    Post subject: Reply with quote
lovely pictures


PostPosted: Sat Apr 20, 2013 4:15 pm    Post subject: Reply with quote
Subject and skilled photographer , light and lens is last Smile great pictures! In my experience hard to find not good enough 135mm prime.


PostPosted: Sat Apr 20, 2013 7:52 pm    Post subject: Reply with quote
Thanks all for the kind words. It really is turning out to be an impressive lens, imho.

Here are some crappy phone camera shots of it on my camera (with t-mount adapter). It's an odd version that I haven't seen pop up since I bought it. The dual aperture ring is interesting too...





PostPosted: Sat Apr 20, 2013 7:59 pm    Post subject: Reply with quote
Old pre-set lens , that is "dual apperture" ring very common from those years once this lens made.


PostPosted: Sat Apr 20, 2013 9:58 pm    Post subject: Reply with quote
Attila wrote:
Old pre-set lens , that is "dual aperture" ring very common from those years once this lens made.


What's the purpose of it? One ring has detents, so it snaps to the aperture. The second ring, though, has no detents, but will only move between the first rings set aperture and everything wider. So, for example, set first ring to 5.6, second ring can now smoothly move between 5.6-2.8


PostPosted: Sat Apr 20, 2013 10:45 pm    Post subject: Reply with quote
Javamoose wrote:
Attila wrote:
Old pre-set lens , that is "dual aperture" ring very common from those years once this lens made.


What's the purpose of it? One ring has detents, so it snaps to the aperture. The second ring, though, has no detents, but will only move between the first rings set aperture and everything wider. So, for example, set first ring to 5.6, second ring can now smoothly move between 5.6-2.8


This is function called pre-set in photography, set first aperture what you willing to use for example f5.6 , open aperture to wide open to allow brighter focusing screen in an SLR camera, once focus set properly, close it to pre-set value and release shutter.

Quote:
Aperture control
Most SLR cameras provide automatic aperture control, which allows viewing and metering at the lens’s maximum aperture, stops the lens down to the working aperture during exposure, and returns the lens to maximum aperture after exposure.[9]
The first SLR cameras with internal (“through-the-lens” or “TTL”) meters (e.g., the Pentax Spotmatic) required that the lens be stopped down to the working aperture when taking a meter reading. With a small aperture, this darkened the viewfinder, making viewing, focusing, and composition difficult.[10] Subsequent models soon incorporated mechanical coupling between the lens and the camera body, indicating the working aperture to the camera while allowing the lens to be at its maximum aperture for composition and focusing;[9] this feature became known as automatic aperture control or automatic diaphragm control.
For some lenses, including a few long telephotos, lenses mounted on bellows, and perspective-control and tilt/shift lenses, the mechanical linkage was impractical,[9] and automatic aperture control was not provided. Many such lenses incorporated a feature known as a “preset” aperture,[9][11] which allows the lens to be set to working aperture and then quickly switched between working aperture and full aperture without looking at the aperture control. Typical operation might be to establish rough composition, set the working aperture for metering, return to full aperture for a final check of focus and composition, and focusing, and finally, return to working aperture just before exposure. Although slightly easier than stopped-down metering, operation is less convenient than automatic operation. Preset aperture controls have taken several forms; the most common has been the use of essentially two lens aperture rings, with one ring setting the aperture and the other serving as a limit stop when switching to working aperture. Examples of lenses with this type of preset aperture control are the Nikon PC Nikkor 28 mm f/3.5 and the SMC Pentax Shift 6×7 75 mm f/4.5. The Nikon PC Micro-Nikkor 85 mm f/2.8D lens incorporates a mechanical pushbutton that sets working aperture when pressed and restores full aperture when pressed a second time.
Canon EF lenses, introduced in 1987,[12] have electromagnetic diaphragms,[13] eliminating the need for a mechanical linkage between the camera and the lens, and allowing automatic aperture control with the Canon TS-E tilt/shift lenses. Nikon PC-E perspective-control lenses,[14] introduced in 2008, also have electromagnetic diaphragms.[15] Automatic aperture control is provided with the newer Nikon digital SLR cameras; with some earlier cameras, the lenses offer preset aperture control by means of a pushbutton that controls the electromagnetic diaphragm.


Source : Wikipedia


PostPosted: Sat Apr 20, 2013 11:21 pm    Post subject: Reply with quote
Ah, very cool, that makes perfect sense.

Attila wrote:
Javamoose wrote:
Attila wrote:
Old pre-set lens , that is "dual aperture" ring very common from those years once this lens made.


What's the purpose of it? One ring has detents, so it snaps to the aperture. The second ring, though, has no detents, but will only move between the first rings set aperture and everything wider. So, for example, set first ring to 5.6, second ring can now smoothly move between 5.6-2.8


This is function called pre-set in photography, set first aperture what you willing to use for example f5.6 , open aperture to wide open to allow brighter focusing screen in an SLR camera, once focus set properly, close it to pre-set value and release shutter.

Quote:
Aperture control
Most SLR cameras provide automatic aperture control, which allows viewing and metering at the lens’s maximum aperture, stops the lens down to the working aperture during exposure, and returns the lens to maximum aperture after exposure.[9]
The first SLR cameras with internal (“through-the-lens” or “TTL”) meters (e.g., the Pentax Spotmatic) required that the lens be stopped down to the working aperture when taking a meter reading. With a small aperture, this darkened the viewfinder, making viewing, focusing, and composition difficult.[10] Subsequent models soon incorporated mechanical coupling between the lens and the camera body, indicating the working aperture to the camera while allowing the lens to be at its maximum aperture for composition and focusing;[9] this feature became known as automatic aperture control or automatic diaphragm control.
For some lenses, including a few long telephotos, lenses mounted on bellows, and perspective-control and tilt/shift lenses, the mechanical linkage was impractical,[9] and automatic aperture control was not provided. Many such lenses incorporated a feature known as a “preset” aperture,[9][11] which allows the lens to be set to working aperture and then quickly switched between working aperture and full aperture without looking at the aperture control. Typical operation might be to establish rough composition, set the working aperture for metering, return to full aperture for a final check of focus and composition, and focusing, and finally, return to working aperture just before exposure. Although slightly easier than stopped-down metering, operation is less convenient than automatic operation. Preset aperture controls have taken several forms; the most common has been the use of essentially two lens aperture rings, with one ring setting the aperture and the other serving as a limit stop when switching to working aperture. Examples of lenses with this type of preset aperture control are the Nikon PC Nikkor 28 mm f/3.5 and the SMC Pentax Shift 6×7 75 mm f/4.5. The Nikon PC Micro-Nikkor 85 mm f/2.8D lens incorporates a mechanical pushbutton that sets working aperture when pressed and restores full aperture when pressed a second time.
Canon EF lenses, introduced in 1987,[12] have electromagnetic diaphragms,[13] eliminating the need for a mechanical linkage between the camera and the lens, and allowing automatic aperture control with the Canon TS-E tilt/shift lenses. Nikon PC-E perspective-control lenses,[14] introduced in 2008, also have electromagnetic diaphragms.[15] Automatic aperture control is provided with the newer Nikon digital SLR cameras; with some earlier cameras, the lenses offer preset aperture control by means of a pushbutton that controls the electromagnetic diaphragm.


Source : Wikipedia
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