|
Forum: Pentax SLR Lens Discussion
04-04-2016, 09:24 AM
|
| |
Guess I missed the videos where he criticizes Nikon. He is right on as far as using primes and lenses with the least number of glass elements.
|
|
Forum: Pentax SLR Lens Discussion
04-04-2016, 07:08 AM
|
| |
That was a great article. Thank you for sharing. I was watching some You-Tube videos made by a "Tuber" named the Angry Photographer. Be warned: he is a Nikon fan-boy but uses Pentax for medium format work. He is quite the character but you have to filter that out in order to receive the valuable info he is presenting. He pretty much explains that lenses with too many glass elements reduce the amount of light that reach the sensor which makes sense, therefore diminishing the quality of the image. The Angry photographer advocates the use of old and some new generation prime lenses, which contain less glass. The high amount of glass elements also "flatten" the image, making it less life like and 2 dimensional. Compare the noses of the models in the photo's presented in the article.
Now that I am aware of the difference it can make, I pay attention to amount of glass elements when shopping for a new lens. The last triangle diagram in the article separates the uses for low count element versus high count element lenses. The use of those lenses with a low amount of glass lenses fall above the "Line of Realism". The use of those lenses with high amount of glass fall below the "Line of Realism". You can therefore see how much more useful low count glass element lens is compared to high count of glass elements in a lens while keeping the "realism" of the image.
By their nature, zoom lenses require more glass elements to produce the range they offer. Very convenient, but you sacrifice the 3D effect and a reduction of light/color transmitted to the sensor. Currently, of the eight lenses that I own, only two are zooms, one of those being the "Stack of Primes", the SMC Pentax-A 35-105mm F3.5. I would nominate this lens for Pentax for an update/reproduction. Of the eight I own, four are current production lenses. The others are considered "Legacy" by this forums account.
Hope this was helpful.
|
|
Forum: Welcomes and Introductions
04-02-2016, 04:15 PM
|
| |
Currently live in Lake Worth. Previous Canon equipment: Elan II (Film), EOS 3 (Film), 30D (digital), 18-55mm, 28-135mm IS, 70mm f/2.8 macro (Sigma), 300mm f/4 IS, 500mm f/4.5 EX (Sigma). Used Canon equipment for a span of roughly 15 years. Fairly happy with Canon and its performance. Lots of soft images though. Long story short. My lenses were ruined while living in Puerto Rico for a few years. The humidity. Fungus. I would be better off buying new equipment compared to sending them to get repaired. The 30D was great for its time but by the time the issue with the lenses came up, it was time to replace it with a more modern system. A friend told me about the Pentax K3. I began to do the research and was impressed with all the features the Pentax K3 offered compared to the Canon equivalent sort of, the 70D. I like the fact that I can use legacy Pentax manual focus lenses. Some of those lenses are spectacular. The weather sealing on the K3 and various lenses sold me with Pentax also. This website also helps with its extensive reviews of lenses and camera equipment. I am not liking the fact that Sigma and Tamron are pulling back on producing K-mount lenses though. Still, I'm happy about making the switch to Pentax.
|
|
Forum: Welcomes and Introductions
04-02-2016, 01:29 PM
|
| |
Hello everyone,
Im loving my Pentax K-3. Used Canon for many years but Im glad I switched. Pentax has alot to offer compared to the other brands.
|
