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MTF-charts for lenses by Canon,
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Sigma, Tamron, Carl Zeiss, etc.
Specifications, comparison, reviews,
MTF-charts for lenses by Canon,
Nikon, Sony, Pentax, Olympus,
Sigma, Tamron, Carl Zeiss, etc.
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Lens Ratings
Lens ratings are submitted by club members. Only lenses rated by at least by 5 different users are displayed. In the future the minimum number of votes needed will be increased. The types of ratings are as follows: by views, by number of owner reviews, by number of owners, by price.
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Rating Views 
User reviews Number of owners 
Average priceLens Brands:
| Lens Name | Overall rating | Number of votes | |
|---|---|---|---|
| 1) | Porst Color Reflex Auto 55 mm f/ 1.4 | 4.53 | 30 |
| 2) | Porst Tele E 135 mm f/ 1.8 | 4.47 | 30 |
| 3) | Porst Color Reflex Auto 50 mm f/ 1.8 | 4.27 | 30 |
| 4) | Porst 135 mm f/ 2.8 Tele MC auto D | 4.16 | 25 |
| 5) | Porst Uni-Zoom 35-105 mm f/ 3.5 Macro MC Auto M | 4.03 | 40 |