about | support
home
 


  Reviews by: rafadavidc  

View profile View recent posts View reviews Add rafadavidc to your Buddy List
Nikon 50mm f/1.8 AF Nikkor

1906NCP_180
Review Date: Mar 3, 2005 Recommend? yes | Price paid: Not Indicated | Rating: 8 

 
Pros: sharp, fast, small, light, good color, contrast
Cons:
cheap plastic build, slow-ish focus

can't beat it for the price. great glass, very lightweight.

feels cheap (because it is). focus could be faster for such a short travel, but this thing was introduced with the am200, so i doubt nikon knew how to make it fast.

--RC


 
Sigma 20mm f/1.8 EX DG Aspherical RF

20_f1_8_1_
Review Date: Mar 3, 2005 Recommend? yes | Price paid: Not Indicated | Rating: 9 

 
Pros: super-bright, super-cheap, much less susceptible to ghosting and flare than expected, rear focus, and if considered "20mm f/2.8 with emergency f/1.8," it's extraordinarily sharp; if considered f/1.8, it's the best low-light lens that exists today
Cons:
soft and dull at f/1.8 (center is ok-ish), giant freaking diameter, loud and slow autofocus, heavy for a 20mm (comes with being big)

great lens, epsecially for the price. soft and dull at the edges and corners at anything brighter than f/4, and especially so at f/1.8. center sharpness superb except at f/1.8-2.8, where it's ok-really good.

phenominal low-light: handheld 1/30s @ f/1.8 @ iso1600 on my d70 means stiff darkness still makes useable images, especially if converted to b&w. i just have to remember to keep important stuff away from the edges.

manual focus ring feels a little cheap.

--RC


 
Sigma 105mm f2.8 EX Macro 1:1 Lens

05_105mmEX_1_
Review Date: Mar 3, 2005 Recommend? yes | Price paid: Not Indicated | Rating: 9 

 
Pros: SHARP SHARP SHARP, fast aperture, good focal length for keeping slightly away from the subject, virtually zero ghosting shooting directly into the sun
Cons:
lens hood, focus speed, focus travel (comes with long macro territory), loses more contrast than expected when shooting into the sun

i cannot say enough good things about the glass contained in this tube. it's the tube i have complaints about.

i did an mtf test on mine. it kept almost perfect contrast all the way out to all four edges at f/2.8. total dropoff from center to edge was less than 5%. diagonal contrast dropped 10-15% (hard to get an exact number by eye) at the very corners. phenominal. just gorgeous. and it only gets better as it closes down.

now, for the tube: long macro = long focus travel: thank god for the focus limiter, but i'd be happy with a three-way switch instead: inf-1:4 (or 1:3?), 1:4 (or 1:3?)-1:2, 1:2-1:1. instead, with inf-1:2, if the focus misses in regluar photography, it goes for a loooooooooong time before it cycles back around to try again.

also, the hood: what is this crap? it screws into the filter threads and is terminal: you can't put anything over it. it hasn't any threading at its end (if it did, it'd be like a giant step-down ring), so it must be removed to change filters or to cap the lens. pain in the rear.

lastly, focus speed: kind of slow. it'd be nicer if it had faster focus to somewhat make up for such long focus travel. any macro ~90mm or longer should have faster-than-normal focus so total focus doesn't feel as slow.

--RC