Bertrick wrote:
In the focus at center vs focus at other frame positions test results (above), I am thinking that this is EVF focussing, not rangefinder. I think this test would be pointless or odd for rangefinder focussing. But if I am wrong, please instruct me.
Yes, in the case of the infinity test demonstrating field curvature at long distance, this is only relevant when using live view and adjusting the focusing point from center to other areas of the frame.
FM members who already own the Voigtlander 40mm f/2.8 Heliar may post samples on this thread. The link to the images will be added to the review's first page:
I think most M lenses that I used have similar tendency, soft at corner.
I heard that it is caused by field curvature. I learn that Sony are currently working for 2D curved sensor.
It is quite innovative idea that drastically improve its quality of image.
junglialoh wrote:
I think most M lenses that I used have similar tendency, soft at corner.
I heard that it is caused by field curvature. I learn that Sony are currently working for 2D curved sensor.
It is quite innovative idea that drastically improve its quality of image.
It's not so much the case with the Voigtlander 40mm f/2.8 Heliar but many M lenses adapted to Sony have issues around the mid-field as well. It really depends on the lens speed and native field curvature shape.
The native field curvature gets amplified and in some cases the shape modified due to using a lens designed for a thin sensor stack on a much thicker one.
Thanks. It is good news for Sony and Panasonic S users (Similar tendency between these two).
What I am interested in this lens is not its sharpness, but gorgeous color rendition and unique character that are presented in your review. It is very charming and appealing character.
Thanks Fred for the review and comparisons!!!!! It is a wrong impression, or it looks to me that the previous version maybe more optimized for the Sony camera?
hanay78 wrote:
Thanks Fred for the review and comparisons!!!!! It is a wrong impression, or it looks to me that the previous version maybe more optimized for the Sony camera?
I could not find my 40/2.8 Heliar for Sony's tests but if I remember correctly, its performance is similar to the new VM version on the Leica body. So, yes, I think the Sony version is optimized for the Sony sensor stack.
hanay78 wrote:
Thanks Fred for the review and comparisons!!!!! It is a wrong impression, or it looks to me that the previous version maybe more optimized for the Sony camera?
Not Fred but I think the original for Sony is a bit more optimized for Sony. I have both and I did a little test between the 2 on my A7C (from balcony handheld in awful weather so not the most convincing or presentable test). Anyhow my impression with my Sony A7C was that the original was a bit better in corner to corner sharpness towards the edges at wider apertures but the difference was not big and by f8 they were pretty equal. I used my Rayqual adapter and hard infinity with both lenses while testing and I think the infinity is spot on right there with both lenses. I think both are at their best at f8 for corner-to-corner infinity shots on my A7C and the new VM wins out for usability vs. the minor IQ difference. I should probably do the same test again in better weather though.
Some more samples taken this week with my Sony A7C + CV Heliar 40/2.8 (the new VM) around different places in Tokyo (Ebisu, Shinagawa, Shinjuku, Nakano). The weather's been quite sunny & warm and photogenic recently (up to 23C today).
Juha Kannisto wrote:
Some more samples taken this week with my Sony A7C + CV Heliar 40/2.8 (the new VM) around different places in Tokyo (Ebisu, Shinagawa, Shinjuku, Nakano). The weather's been quite sunny & warm and photogenic recently (up to 23C today).
Fred Miranda wrote:
Thanks for the samples Juha. Vibrant town.
The CV 40/2.8 is a great option for strolling around as it's very inconspicuous.
Thanks Fred! Yes, I like a light 40mm lens on a small and light camera (such as my Sony A7C or Sigma fp) as a setup for general strolling around the town even when not especially planning to take photos. 40/2.8 VM is also very convenient to use at hard infinity for infinity cityscape shots on a precise adapter and it's very pleasant from handling perspective in my opinion. I also like the rendering quite a bit.
