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|| SportsShooter.com: Member Message Board
Sigma 8mm
Marvin Gentry, Photographer
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Birmingham | AL | USA | Posted: 11:44 PM on 03.26.10 |
| ->> Hey I am looking at purchasing a Sigma 8mm lens. I see where there is an EX and an EX DG I am wondering if the difference is worth the price difference. Its about $200 . Also is this a super sharp lens?? |
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Stanley Leary, Photographer
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Roswell | GA | USA | Posted: 8:30 AM on 03.28.10 |
->> This is a coating difference which all the lens manufactures are doing to improve the images.
"DG (DG for Digital)
These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs."
I would invest in the newer coated lenses if I were you. |
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Michael Fischer, Photographer
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Spencer | Ia | USA | Posted: 10:56 AM on 03.28.10 |
->> The use of coatings is not new. The general idea is that the coatings help pass light through the element, and as a result, there is less refraction - in other words you don't have light bouncing back and forth between the elements which will lower contrast and make things look bad. I believe Pentax was the first one to do multi-coating 40 years ago ( Super Multi Coated Takumars).
For extreme wide angles, it's almost a must since you've got lots of curved elements and lots of elements.
As for being super sharp, if that's a prime issue, then buy a prime brand (Nikon, Canon). The tier two lenses are lower cost.. for a reason. It's a value thing; for the amount of times you'll use the lens, is a prime brand worth the difference? Mechanically, at least in the old days, the prime brands were more durable. |
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Chuck Steenburgh, Photographer
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Lexington | VA | USA | Posted: 12:35 PM on 03.28.10 |
->> Michael & Marvin - This is a circular fisheye. Sharp? All things are relative; sharpness is not the reason one buys a fisheye.
While I have not used Sigma's circular fisheye, I was sufficiently impressed with their 15/f2.8 fisheye that I traded in my 16/f2.8 AiS Nikon. |
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Marvin Gentry, Photographer
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Birmingham | AL | USA | Posted: 1:13 PM on 03.28.10 |
| ->> Well circular look is what I am looking for. I just want to make itsnot like the otther sigma lens I had purchased. |
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Chuck Steenburgh, Photographer
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Lexington | VA | USA | Posted: 1:17 PM on 03.28.10 |
| ->> What's the other Sigma? I've owned a slew of them, and most were pretty good optically. Build quality, can't say the same: very inconsistent. I have found their more recent lenses to be better in both respects. |
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Donald Montague, Photographer
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Orlando | FL | | Posted: 1:54 PM on 03.28.10 |
| ->> Marvin, i actually purchased this lens about 2 months ago. this lens defiantly has earned a place in my camera bag, but by no means is it an every day lens. the lens is defiantly sharper edge to edge around 5.6 -8. but still very acceptable wide open. |
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Mark Peters, Photographer
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Highland | IL | USA | Posted: 5:10 PM on 03.28.10 |
->> Donald must definitely own the most rebellious Sigma out there!
FWIW, I always thought the Peleng 8mm was a good buy at it's price point if you don't mind the fully manual operation. |
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Chuck Steenburgh, Photographer
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Marvin Gentry, Photographer
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Birmingham | AL | USA | Posted: 6:31 PM on 03.28.10 |
| ->> Donald did you buy the ex or the ex eg ?? |
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Stanley Leary, Photographer
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Roswell | GA | USA | Posted: 11:21 PM on 03.28.10 |
| ->> I own the EX DG and it is used for Spherical Panoramic photos. I still own the Nikon 16mm full frame fish eye, but wanted to make less photos to stitch together and this was perfect for the job. |
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Donald Montague, Photographer
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Orlando | FL | | Posted: 11:34 PM on 03.28.10 |
| ->> I got the EX DG |
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Donald Montague, Photographer
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Orlando | FL | | Posted: 11:37 PM on 03.28.10 |
| ->> from what i remember the f/3.5 version was a major upgrade from the f/4 version for sharpness. |
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Mike Copeman, Photographer
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Queen Creek | AZ | USA | Posted: 9:52 PM on 03.31.10 |
| ->> I have the older EX 8mm f4 and it is sharp at f5.6 and f8. Seems to be well built. |
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