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#11 |
Junior Member
Join Date: Mar 2004
Posts: 10
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Hi Eric,
Sure does help, Thanks! I think I am describing this Tokina lense incorectly. Here is one on e-bay http://cgi.ebay.com/ws/eBayISAPI.dll...category=48556 the only difference is that mine is for Olympus. I bought it used back in '76 or '77 timeframe. It is an odd beast for sure. I looked at the adjustment ring to get the numbers. Also on the lense is printed 35-200 1:3.5-4.5 67 I know the 67 is the diameter of the front of the lense as the filter is 67mm, do the other numbers make more sense? Just goes to show ya how little I know and understand about all this stuff. So.... makes me wonder what it really is @ F22. I'm guessing that's at 35MM not at 200MM. Ken |
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#12 |
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Join Date: Dec 2002
Posts: 5,803
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So largest aperture at 35mm is f3.5 and at the longest end (200) is f4.5. The normal way to describe this is:
35-200 f3.5-4.5 This is not an uncommon zoom and it has a reasonable range that people find to be useful. It isn't extremely wide angle, but wide enough and 200mm is reasonable long for normal usage. Because of the sensor crop factor, it will be harder to find something that wide (the equivalent to 35mm) that also goes out as far as the equivalent to 200mm. You could do it in two lenses fairly easily, but not in one. A quick look at lenses shows shows that getting the exact range you have with film will be expensive. One of these: Sigma 20-40mm F2.8 EX is $650 Canon EF 17-40mm f/4L USM is $690 and one of these: Sigma 24-135mm f/2.8-4.5 is $300 Canon EF 28-135mm f/3.5-5.6 IS USM is $410 Would do it. You normally want some overlap in the the focal length so you don't have to always change lenses. I'm betting the f22 is the smallest aperture (largest fstop) the lens can do. It's a fairly reasonable number. Eric |
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#13 |
Senior Member
Join Date: Jun 2002
Location: 39.18776, -77.311353333333
Posts: 11,599
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FYI
There's a new 28-200mm equivalent... The wide angle is what eveyone is missing in a dSLR after the 1.6x crop factor, especially for close quarter. It's small enough with nothing else to carry (the included hood will also prevent knocking the front element against rock)! ![]() You don't want to be changing lens crawling in the mud (and in the dark): http://www.sigmaphoto.com/Html/18-125.htm |
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#14 |
Senior Member
Join Date: Dec 2002
Posts: 5,803
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I didn't know of the 18-125. Is that for sale yet? I didn't see it at adorama.
Eric |
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#15 |
Junior Member
Join Date: Mar 2004
Posts: 10
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Got a chance this past weekend to check out Canon 10D, nice camera and feels good in my hands given their size. Wanted to compare the Fuji S2 or S3 but the camera shop didnt have any in stock. Apparently they are selling quite well here in Mi.
My purchase ofa new camera will be delayed a bit now though. Got nailed pretty hard for taxes this year and figure I better annie up and pay the feds or I'll be looking at the world through metal bars. Its not all that bad though becuase it will give me more time to check out the other cameras before I go and plunk down $5K |
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#16 |
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Join Date: Dec 2002
Posts: 5,803
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I know someone who upgraded from the Nikon D100 to the Fuji S2 Pro. He was fairly happy with the D100, he is very happy with the S2. After reading the specs for the S3, he was impressed. He had hoped for more resolution, but better dynamic range is even better.
Since you have no lenses or flashes to guide your choice, do consider the S2. I didn't think the S3 was out yet, although it has been anounced. Eric |
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#17 |
Junior Member
Join Date: Mar 2004
Posts: 10
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Been looking at the S2 as far as reviews go. Also talked with the guy at hte local photo store. He mentioned that the S2 has 2 batteries, one set of AA rechargeables and another non rechargeable which is a huge bummer! I await the S3, hopefully they have changed that.
This is hte link where I am puting up some of my stuff. http://www.iserv.net/~kendj/photo.html There isn't much there yet as I have been busy dong other stuff for work that needed to get done. I'll be putting more up this weekend as time permits. Feel free to check it out and comment good or bad, I welcome all suggestions. Caveboy_ "not a pro by any means" _Ken |
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#18 | |
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Join Date: Jan 2004
Posts: 149
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#19 | ||
Senior Member
Join Date: Mar 2003
Posts: 205
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I'm not going to read all of the replies in this thread, so please forgive me if I give a redundant answer. :-)
Quote:
The Foveon images still look neat at 100 percent, though. :-) Quote:
X=sensor 0=interpolated pixel Standard Sensor(square format): XXXX XXXX XXXX XXXX FUJI SCCD Sensor(45 degree) X_X_X_X _X_X_X_ X_X_X_X _X_X_X_ Now, this is what must be done to get a square format output: X0X0X0X 0X0X0X0 X0X0X0X 0X0X0X0 Thus, a 12MP file output MUST be created to use the 6MP sensors in the S2 PRO without loss of resolution, for example. Why does FUji use a diagnol sensor? Simple. Most scenes have more high frequency spatial information on the horizontal and vertical planes. Sampling diagnolly increases the effective resolution of the camera on these scenes. In optimal situations, it seems the SCCD can resolve approx. 1.3-1.5x the rated sensor MP rating, as compard to standard orientation sensors. -Chris |
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#20 |
Junior Member
Join Date: Mar 2004
Posts: 10
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Hi WmAx,
Thanks much for the detailed info on the sensors. Do you happen to know what Fuji means by S and R pixels? Here is their description from their web page for the S3 "APS size 12 megapixel (S-pixel: 6.45 million, R-pixel: 6.45 million) Super CCD SR sensor technology for high image quality with wide dynamic range" I'm also understanding that pretty much all cameras interpolate except maybe Sigma's. The S3 also does this however because of their photosite layout they basically do a much better job of it right? Is the aliasing you talk about what causes the purple hue that is sometimes seen at areas of high brightness with darker backgounds such as a flashes reflection off something shiny such as chrome? Ken |
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