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View Full Version : sigima 10-20, extension tubes and IR filter arrived today


Headcase650
6th of April 2006 (Thu), 22:36
Well the 10-20 sigma is unbeleavable, its "W_I_D_E", destortian isnt so bad if you remember to keep the camera level, tilt is and perspective go to the dogs as to be expected, HSM is awesome. No focus problems and sharp all the way across. Big thumbs up for sigma. I was going to try to use a cokin IR filter, I knew it would vignette so I turned the filter holder 90 degrees. this took care of the holder showing up in the pic but somethings just not right with the set up. There is space between the filter and front lens element allowing side light to pass between them and in every test regaurdless of the direction of the light source I would get a reflection of the front of the lens in the image. The cokin is being returned tomarrow. The pro optic extension tubes are top notch and give new life to my hardly used 28-135 IS, with all the tubes and focal length at about 100mm it works like a charm and give near lifesize images, focal length at 70mm I think its reaching about 1:1 reproduction but your working distanc is less than 2 inches. I just realy like the IS when doing macro.

I would recommend the sigma or the extension tubes to anyone, the cokin filter didnt work with the 10-20 but I knew it was a risk when I ordered it, I think Im going to order a hoya rm-72 in 58mm steped down to 52mm to use with my 28mm and 50mm primes, and maybe some future lens purchases.

Adrian

digibeet
7th of April 2006 (Fri), 01:08
That lens is unbeleavable indeed! I do like the distortion when it is tilt. Gives a strange effect to buildings...
Most shots were sharp (SHARP), but not when I use f/4 or f/4,5 @ 10mm. Shots taken at f/5 or lower are great!