telephoto lenses

Jeff Price · October 21st, 2003, 02:53 PM

If they were the same price (which they aren't) I'd get the Century but only because I find I could sometimes use some extra zoom. Ok, you can almost never have enough zoom in wildlife photography...

Stephen Sobel · October 21st, 2003, 06:00 PM

How much more zoom do you get with the Century?

October 21st, 2003, 09:52 PM

check the specs but i think its .3x more right? (from a 1.7 to a 2.0)

Jeff Price · October 22nd, 2003, 09:47 AM

A better way of looking at it is in 35mm equivalents. The equivalents for the standard 20x is 40mm - 790mm (per B&H catalog). So, 790 mm is about the same as 16x power binoculars (15.8).

Using the Sony, 1.7x, gives you about 1300mm (27x scope)

Using the Century Optics 2.0x, gives about 1580mm (32x scope)

So the 0.3x difference translates into an additional focal length equivalent of more than 200mm and a magnification incease of an additional 5x.

Assumptions - the conversion factor of camera focal length to 35mm is 9.4x; multiply the additional magnification (i.e., 1.7x) times the focal length (84mm) times 9.4. To calculate binocular/spotting scope equivalent magnifiaction divide by 50.

Stephen Sobel · October 22nd, 2003, 04:37 PM

Thanks! That helps.

Bill Beasley · October 24th, 2003, 04:00 PM

I have the Century Optics 2X teleconverter and I am very happy with it. Quality is excellent. The quick on/ off bayonet mount is much faster and easier to attach compared to a screw in mount.

Either way you go, you need a good tripod!

Steve Nunez, nice Red-Tailed shots. Looks like a nice Bob White quail dinner.

Bill

October 28th, 2003, 10:59 AM

i found a digital optics telephoto lens for $109. Had mine for week. No problems thus far.

http://www.beachcamera.com/shop/Product.asp?ProdTypeList=&Sku=CNVGL2

October 21st, 2003, 02:53 PM	#16
Jeff Price Major Player Join Date: Apr 2003 Location: Chico, California Posts: 357	If they were the same price (which they aren't) I'd get the Century but only because I find I could sometimes use some extra zoom. Ok, you can almost never have enough zoom in wildlife photography... __________________ Jeff Price Flickerflix Nature Videos flickerflix@yahoo.com

October 22nd, 2003, 09:47 AM	#19
Jeff Price Major Player Join Date: Apr 2003 Location: Chico, California Posts: 357	A better way of looking at it is in 35mm equivalents. The equivalents for the standard 20x is 40mm - 790mm (per B&H catalog). So, 790 mm is about the same as 16x power binoculars (15.8). Using the Sony, 1.7x, gives you about 1300mm (27x scope) Using the Century Optics 2.0x, gives about 1580mm (32x scope) So the 0.3x difference translates into an additional focal length equivalent of more than 200mm and a magnification incease of an additional 5x. Assumptions - the conversion factor of camera focal length to 35mm is 9.4x; multiply the additional magnification (i.e., 1.7x) times the focal length (84mm) times 9.4. To calculate binocular/spotting scope equivalent magnifiaction divide by 50. __________________ Jeff Price Flickerflix Nature Videos flickerflix@yahoo.com

October 21st, 2003, 06:00 PM	#17
Stephen Sobel Major Player Join Date: Nov 2002 Posts: 408	How much more zoom do you get with the Century?

October 21st, 2003, 09:52 PM	#18
Guest Posts: n/a	check the specs but i think its .3x more right? (from a 1.7 to a 2.0)

October 22nd, 2003, 04:37 PM	#20
Stephen Sobel Major Player Join Date: Nov 2002 Posts: 408	Thanks! That helps.

October 24th, 2003, 04:00 PM	#21
Bill Beasley New Boot Join Date: Aug 2003 Location: Corpus Christi, Texas Posts: 9	I have the Century Optics 2X teleconverter and I am very happy with it. Quality is excellent. The quick on/ off bayonet mount is much faster and easier to attach compared to a screw in mount. Either way you go, you need a good tripod! Steve Nunez, nice Red-Tailed shots. Looks like a nice Bob White quail dinner. Bill

October 28th, 2003, 10:59 AM	#22
Nick Walker Posts: n/a	i found a digital optics telephoto lens for $109. Had mine for week. No problems thus far. http://www.beachcamera.com/shop/Product.asp?ProdTypeList=&Sku=CNVGL2