Photoclubalpha

Following some findings about BF/FF and issues connected with using Dust-Aid sensor cleaning on the A100 (now not recommended by Dust-Aid, but for the wrong reasons) I should put out this warning - do not use Dust-Aid on 5D, 7D or A100. Do not use any cleaning system which involved firm pressure on ...

I nearly lost a very good shot to terminal unsharpness today:

http://photoclubalpha.com/?p=53

David

It just seems to be an offer to give a hardback book, Sony Alpha Lenses, away to all Sony lens buyers who register their purchase on-line from June 15th to July 31st 2007.

David

Theta - Durst printer again (they will probably complete the entire lineup) Alpha - Sony camera line Beta - the version of your software which is even less reliable than final release Gamma - filched by photo science to describe the contrast curve function Delta - Ilford film technology Zeta - Agfa-...

Following some feedback I have added pretty strong criticisms of DxO's failure to update the lens database for the Alpha mount since January when my original download was done. At that time, new lenses seemed to be appeared each month and I assumed that although most of my own own lenses were covere...

Thanks for the file Paulo. The problem is common to most internal focusing fast tele lenses including the Sigma 150mm f2.8 macro and 50-150mm f2.8 zoom. You will notice that colour fringes in front of the focus plane, and behind the focus plane, appear magenta and green respectively. What is happeni...

Got another today: Durst Rho Pictor, large format flatbed printer: Alpha - Sony camera line Beta - the version of your software which is even less reliable than final release Gamma - filched by photo science to describe the contrast curve function Delta - Ilford film technology Zeta - Agfa-Gevaert/D...

Added 30/5/07

http://photoclubalpha.com/?p=43

David

Tóti, great to hear from an admitted Canon virgin!

I think I have a Unomat somewhere. Clumsy design, but a good lens. I think it does not work, because the metering cell has failed long ago.

David

You will find some of the earlier Minolta lenses very interesting. Quite unlike Zeiss, but equally good in their different way. I hope you get a chance, one day, to find a 1960s 100mm f2. They are very rare but one of the best SLR lenses ever made.

David

Email me a raw file sample to [email protected]. I would like see what this looks like. I am looking for a review of the 85mm f1.4 Zeiss for our next Photoworld issue, obviously with good pix, but as you may realise we are quite prepared to discuss negative aspects of new gear too.

David

This bulletin board may allow me to get a link back through the heading when I can work out how to do so. In the meantime, you can find a quick jump back to photoclubalpha.com hiding in the copyright notice at the foot of the BB pages.

David

I have added listing for our UK club sponsored workshops and holidays to the site. You will find these in the left hand sidebar now under Club Activities.

David

Paulo, the image looks very artificially processed with green posterized haloes round blurred areas and so on. I can not think this is just the lens doing this. It must be a combination of the lens, sensor, and very unusual processing to cope with the extreme exposure and contrast conditions.

David

They might not buy the rights, but in the past camera makers have bought up a large quantity of actual books, and used them as incentives. Since this is an e-book, it would be even easier - they could buy a series of free download codes, and give those in return for registering the warranty on the c...