It's a Vivitar 75-205 mm f/3.8 Macro focusing zoom. In this picture, I believe it has an attached 2x teleconverter and, consequently, reduced image quality.
The Vivitar 75-205mm was apparently a very popular lens for advancing amateurs a generation ago, and was well loved by many of its users, though weaker at extremes of f-stop and range than today's equivalent lenses.
My experiments so far with the manual lenses really highlight now inconsistent autofocus can be. It's great at getting fairly sharp, though it needs light on the subject and creates a delay when you press the shutter button. Yet for getting *razor* sharp, it's as inconsistent as manual. I can take 10 pictures on a tripod and observe sharpness differences in most of them.
Probably I just haven't figured out yet how to use the AF right.
Unveiling new techniques and methods in photography. Otherwise having a good time with local UTD students, faculty or staff of all levels - hobbyist or aspiring.
Please invite yourself or friends. We are always looking for new people and creative ideas.
Primary meet up days are posted a week in advance on the blog. We initially met at the Visual Arts Building then may move onto campus for outdoor shots. We are in the process of expanding the club and shooting venues ... Visitors/Participants may come late or leave early to the meeting if their schedule needs. In case of coming late, call Ryan to find where the group has relocated. Any changes to the meet up time will be posted in the blog. To host a photo shoot, email me to get blogging privileges.
Right now our primary shoots are Fridays at 12:30 in the Art Barn.
What are the benefits of participating?
We create low-risk opportunities for photo shoots; not much is at stake than the safety of models and care of your equipment. This allows photographers to experiment freely without overwhelming concern for the business aspect of photography. Here is where you are able to treat a photo shoot as much as you want it to be treated. Have fun and meet new people. OR, Treat it professionally and you will be preparing yourself for paid photo shoots. Take risks here and learn from mistakes now in a collaborative effort, rather than later where there could be much more to lose i.e. your money, time, or reputation.
3 comments:
It's a Vivitar 75-205 mm f/3.8 Macro focusing zoom. In this picture, I believe it has an attached 2x teleconverter and, consequently, reduced image quality.
The Vivitar 75-205mm was apparently a very popular lens for advancing amateurs a generation ago, and was well loved by many of its users, though weaker at extremes of f-stop and range than today's equivalent lenses.
It can be readily found on e-bay today for $30.
Not bad. It's essentially a 70-200mm F/4 (but better). It was probably worth something back in the day, but since it's manual, times have changed.
My experiments so far with the manual lenses really highlight now inconsistent autofocus can be. It's great at getting fairly sharp, though it needs light on the subject and creates a delay when you press the shutter button. Yet for getting *razor* sharp, it's as inconsistent as manual. I can take 10 pictures on a tripod and observe sharpness differences in most of them.
Probably I just haven't figured out yet how to use the AF right.
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