RStyga

So, the light hits the sensor at non-favourable angle as we move away from the frame centre, due to lens design? Hmm, I imagine that the Heliar 15mm would be even worse at MTF cameras. However, if...

I expect that mounting a full-frame lens on a FOV X2 camera would take advantage of the narrower FOV and get sharper results across the frame with much less vignetting and distortion. I was...

Exactly. So, you don't use it. Some manufacturers did use Thorium/Lanthanum for lenses and viewfinders, although it is rare to get a 'hot' viewfinder (they were not supposed to make them in the...

It is over 50mm so.... Will do, thanks.

Also http://photo.net/medium-format-photography-forum/009X3q

Let me be blunt: it is NOT safe to use. It is not deadly but it does not have to be deadly to be unsafe. At any rate, keep it away from your face and especially your eyes. Keep away from all photo...

Thank you for the info, I'll definitely check it out, but you are completely off topic. This thread is hopefully not about the optical performance of any lens...

"Adobe reported what it called a “sophisticated” cyberattack on its network..." reports MacWorld Australia.

God forbid, if it wasn't "sophisticated", what would that mean for your security...

I'd like to know whether wide angle M39-mount lenses (Leica Thread Mount), especially the Voigtlander 15mm and 21mm primes, can be safely used on MFT bodies (with an adapter of course); I've...

If Olympus 5-axis state of the art IS system cannot offer blur-free images in such speeds as 1/160s, then what sort of 5-axis state of the art IS system is it, really??

If Olympus 5-axis state of the art IS system cannot offer blur-free images in such speeds as 1/160s, then what sort of 5-axis state of the art IS system is it, really??

This is a major...

If Olympus 5-axis state of the art IS system cannot offer blur-free images in such speeds as 1/160s, then what sort of 5-axis state of the art IS system is it, really??

This is a major...

If Olympus 5-axis state of the art IS system cannot offer blur-free images in such speeds as 1/160s, then what sort of 5-axis state of the art IS system is it, really?? Are we sure it's not mirror...

And solely great lenses do not suffice. The S2 reaches up to ISO 1250 but to maintain very high IQ, reviews/field tests suggest using ISO 640 and below. Excuse me? A 645D will take you up to ISO...

And solely great lenses do not suffice. The S2 reaches up to ISO 1250 but to maintain very high IQ, reviews/field tests suggest using ISO 640 and below. Excuse me? A (full weather sealed) 645D will...

And solely great lenses do not suffice. The S2 reaches up to ISO 1250 but in order to maintain very high IQ reviewers suggest using ISO 640 at most. Excuse me? A (full weather-sealed) 645D will...

I had no doubt, the moment I posted this, that I would get attacked. If you, Leica owner, spent a provocative amount of money to obtain a Leica lens/body it does not automatically mean it is...

I had no doubt, the moment I posted this, that I would get attacked. If you, Leica owner, spent a provocative amount of money to obtain a Leica lens/body it does not automatically mean it is...

If Leica is slowly degrading in quality it surely is not in pricing.

The B/W ones are my favourites. Good stuff, S!