Originally posted by XMACHINA How do you define "low light use"? Would you kindly express that in terms of an ISO value that you'd like to be able to use?
Practically speaking, I find that SLT puts noise and detail retention on par with Sony's ASP-C sensors up to and including ISO 6400, after which there is a dramatic falloff in image quality. That's my experience with the a99, (which, as you know, has a similar 24MP sensor to the a7) and that perception is supported by DXO Mark signal-to-noise performance data:
My first DSLR was a Nikon d3000, and it was good to ISO 800. My second camera was a Sony A65 and it was good to ISO 1600. My third camera was a Pentax K-5 which is good to ISO 3200 (I'm talking printable).
The A65 was a fantastic camera, but it did have some flaws. Like at night, inside with the house lights on, the "low light" performance was pretty bad due to the translucent mirror deflecting 30% of the light. Side by side, the K-5 gathered much more light in such instances. SLT's have there downside, which is in dim light its reflecting 30% of the light.
You can un-clench, and let your undies un-bunch now.
Originally posted by XMACHINA *Sigh*
So, should I be accusing people on this site who spread misinformation about Sony gear (such as the false assertion that the a99 is the only FF Sony body with image-stabilization, and the one that Sony just "puts a Zeiss badge" on certain lenses of their own design), or who state as fact that Sony has abandoned A-Mount (despite the release of the a77 MkII as recently as this summer), or who talk about SLT as if it's completely ruinous to image quality, of being paid by Ricoh to write these things (perhaps to discourage the flight of Pentax users to a competing system)? Because it seems that its just fine to discuss Sony here on Pentaxfourm.com just so long as the comments are intended to trash or otherwise misrepresent the capabilities of Sony gear.
Hey dude, I didn't say anything of the sort against Sony. My A65 was pretty darn good, but my K-5 was svelte. My A65 had zero mirror slap, "Steady Shot" was up to 4.5 stops, the AF was really fast. But it didn't have "Horizon Correction" nor a couple of other things I got with the K-5.
And no, I am not employed by Ricoh, I'm working in a dead end job which I hate BTW! If only I could get a job working for Ricoh or Pentax - that would be sweet - I just don't have any actual skills they need ! Maybe a writer for Pentax commercials, seeing how the previous K-S1 commercial was ........ kinda crap ! You know the one, where the young people are jumping into a pool with music playing, and we don't really see the camera until the end.
Originally posted by XMACHINA I wouldn't buy the a7 or it's variants with the intention of shooting with A-Mount lenses--exception made for shooting video. (I see no reason not to shoot A-Mount lenses on A-Mount camera bodies which I find perfectly cromulent.) But if I wanted to, by all reports the LA-EA4 adapter works very well on the a7/r/s, and I would take advantage of some of the better lenses. These are shot with an inferior SLT camera and one of three lenses: Zeiss ZA Planar T* 85mm f/1.4, Zeiss ZA Sonnar T* 135mm f/1.8, Sony 70-200mm f/2.8 G.
You see, this is where I'm different. If I were to buy an A7 - which I really like and am very impressed with - I would like to be able to use the A-mount or old Minolta lenses on an adapter
which does not have the translucent mirror in it. I mean, there are some pretty sweet Minolta lenses out there on Ebay, and they're not too pricey. Shoving the mirror in an adapter for a "Mirrorless" camera ......... is kinda stupid don't you think. If I'm going mirrorless
I MEAN I'M GOING MIRRORLESS ! Okay Sony !.
Originally posted by XMACHINA And I don't know that you want to send people to YouTube as a means of down-talking the a7.
If you go to youtube and search EF lenses on the A7 and see the performance, its hardly worth it. The EF adapter for the Canon EOS-M works equally bad with EF lenses. This is what I mean by backwards compatibility - you're not quite getting it with Canon OR Sony. Even with the K-01, the AF was really slow, but the EF lenses on an A7 or EOS-M where it focuses through the entire range, then steps down gradually to find focus - I mean, its kinda sad ! When I heard that those mirrorless systems can take an adapter with electronic coupling with aperture and AF, I was like wow, that really cool, but when you look into the performance, it ain't so cool after all. Sony and Canon want you to by the FE or M mount lenses.
(Edit - the EF adapter for EOS-M and A7 is kind of like a street/fist fight, nobody stops and does a full stretch out, before they have a fight on the street. With those adapters when you AF, the lens stretches through the whole range, and then starts to find focus through slow steps. Its as if the lens zooooms forward, and then zooms back (stretching out), okay now I'm ready (reverse clenching fingers together), lets focus forward, no, a little more, no, a little more, no, a little more, no, a little more, bingo there it is ! Okay thats it I'm done ! see ya good night !")
As with every system, there are trade offs. Right now, the A7 looks really really good, its lens range needs to mature. But mirrorless is definitely the future, and Sony and Fujifilm are well ahead of the game already. As for Pentax and canikon, they're too busy trying to protect their SLR business rather than trying to innovate a new mirrorless system which customers want to eagerly take up.
Last edited by zoolander; 11-08-2014 at 04:12 AM.