WillemB

WillemB

Lives in Netherlands Heeze, Netherlands
Works as a retired mech. engineer
Joined on Nov 24, 2005
About me:

Nikon D7100 and Fuji X-E1, X-Pro1 and X-T10

Comments

Total: 9, showing: 1 – 9

Great documentary! Love that man Klein!

Link | Posted on May 1, 2013 at 20:54 UTC as 30th comment
On article Eurostar makes a tablet for the ladies (14 comments in total)

I guess that selling starts on April 1st!

Link | Posted on Feb 19, 2013 at 11:10 UTC as 3rd comment
On article A sneak peek at our forthcoming camera test scene (323 comments in total)
In reply to:

Mssimo: We are going to be looking at this for the next 10 years or so..i think we need to think ahead and add at least one more hot girl.

By doing some shifting there will be ample space for a beautyful doll wearing well detailled feathers on some critical spaces. Otherwise a skin detail with finely molded shadows...

Link | Posted on Oct 10, 2012 at 08:41 UTC
On article Photokina 2012: Fujifilm Stand Report (26 comments in total)
In reply to:

Nishi Drew: What XF1 color did dpreview vote on?

If there are 5 choices I will vote 2, 4,6,14, 16 so the ladies may have a bright coloured one...

Link | Posted on Sep 20, 2012 at 11:13 UTC
In reply to:

cpkuntz: Why do they use 2 mp sensors? Robust build? The Apollo mission used Hasselblads. Why not get some medium format goodness on board one of these rovers?

Because of the extreme low S/N, data transmission will be very slow; the receiver bandwidth on earth might easily be less than one Hertz...

Link | Posted on Aug 8, 2012 at 10:01 UTC
In reply to:

IcyVeins: Just wondering but why would you need f/2.8 for doing macro? Don't you usually want as much DOf as possible since you are focusing so close?

@ J.S.Wisniewski:
Thank you for pointing out the welcome effect of shrinking focus length when close focussing..I used the old formula: 1/V + 1/B = 1/F when I read that the closest focus distance was 470 mm (= distance between V and B).

'Who is John Galt'

Link | Posted on Jul 13, 2012 at 21:31 UTC
In reply to:

IcyVeins: Just wondering but why would you need f/2.8 for doing macro? Don't you usually want as much DOf as possible since you are focusing so close?

Sadly, at close-up, the effective focus length of this lens has shrunk to 117 mm when 1:1. Is this called super-focus-breathing?

Link | Posted on Jul 13, 2012 at 09:56 UTC
In reply to:

viking79: I like how it out performs all the best L glass at 40 mm, of course you give up the added range. Looks like a winner for $200.

The fact that its resolving power does not get much better by stopping down points to some residual astigmatism. Typical for a Tessar-type.

Link | Posted on Jun 22, 2012 at 09:46 UTC
Total: 9, showing: 1 – 9