hum, Olympus 9-18mm f/4.0-5.6 "leaked"?

[andylawcc]

I guess nobody would care as much but i stumbled upon this on Adorama's site:

http://www.adorama.com/IOM918.html

it's not on Olympus's nor FourThird's website
http://www.four-thirds.org/en/products/lense.html
http://www.olympusamerica.com/...roducts/lens/index.asp

well, Oly's other two wide angles are either the 7-14 f/4.0 @ $1500~ or 11-22 f/2.8-3.5 @ $649~, this new product seem kinda odd in place. When compared to the 11-22 f/2.8-3.5, I don't know if it is a good trade off between larger aperture + $50 vs. 2mm wider angle.

 

[tfinch2]

This lens was announced months ago by Olympus.

http://www.dpreview.com/news/0...8051302olympus9-18.asp

 

[ElFenix]

11 mm diagonal on 4/3 is 91° 17'
9 mm diagonal on 4/3 is 102° 41'

that's a pretty good difference.

a much bigger difference than the 1.5x and 1.6x crops for the sigma 10-20 f/4-slow and the tokina 11-16 f/2.8. sigma has HSM otherwise it wouldn't even be a contest.

 

[andylawcc]

Originally posted by: ElFenix
11 mm diagonal on 4/3 is 91° 17'
9 mm diagonal on 4/3 is 102° 41'

how do you arrive to that equation?

 

[ElFenix]

http://www.imaginatorium.org/stuff/angle.htm

 

[andylawcc]

Originally posted by: tfinch2
This lens was announced months ago by Olympus.

ya, it too was on Olympus site too, just hidden under "To be Announced" section.

Originally posted by: ElFenix
http://www.imaginatorium.org/stuff/angle.htm

thanks. Now would I be too naiive to think "Sensor Size - Bigger the Better" cuz at the same focal length, a larger sensor would yield a larger angle?

 

[Kirby64]

ew. 18mm(35mm equiv) at the wide end? No thanks. My sigma 10-20mm does the job nicely. 16mm (35mm equiv). That extra 2mm can mean a lot Honestly kinda want the tokina 11-16, but that's a bit too pricey right now.

 

[ElFenix]

Originally posted by: andylawcc

Originally posted by: tfinch2
This lens was announced months ago by Olympus.

ya, it too was on Olympus site too, just hidden under "To be Announced" section.

Originally posted by: ElFenix
http://www.imaginatorium.org/stuff/angle.htm

thanks. Now would I be too naiive to think "Sensor Size - Bigger the Better" cuz at the same focal length, a larger sensor would yield a larger angle?

at the same focal length, yes. however, getting rectilinear at large angles is nearly impossible. the shortest rectilinear glass for 35 mm is 12 mm. there is a cosina voigtlander 12/5.6 for ltm. sigma and tokina make 12-24 zooms for SLRs. and that's it. canon's shortest lens is a 14 mm fixed focal, nikon's is a zoom that starts at 14 mm. olympus shortest glass resembles 14 mm on 35 mm, but due to the aspect ratio the field of view is slightly different.

 

[andylawcc]

doesn't Sigma makes a 10-20? Mount that on a full frame 5D would that make 10mm in 35mm equivalent?

 

[Kirby64]

Originally posted by: andylawcc
doesn't Sigma makes a 10-20? Mount that on a full frame 5D would that make 10mm in 35mm equivalent?

Sigma makes a 12-24 full frame, but the 10-20 is a crop sensor lens.

 

[dietmountainsux]

mmmm...

 

[ElFenix]

Originally posted by: Kirby64

Originally posted by: andylawcc
doesn't Sigma makes a 10-20? Mount that on a full frame 5D would that make 10mm in 35mm equivalent?

Sigma makes a 12-24 full frame, but the 10-20 is a crop sensor lens.

it works just fine on a 35 mm camera. the corners and extreme sides are blacked out at the 10 mm setting, but you get significantly wider coverage than 16 mm. i don't know if it's wider than the 12 mm would be, though.