Jump to content
Login with your Gmail HERE and start posting in seconds! ×
Don't just read! Be part of the Community! Join the conversation ×

Sony Alpha A7 & A7R

Tywais

By Tywais
in Photography Equipment and Tools

 Share

Recommended Posts

MJP Diamond Member

MJP

Posted
Posted

Novoflex adapter finder . . .

http://www.novoflex.com/index.php

They do the PK to A7/r body. The PK adapter even has an aperture control ring for the newer lenses without an aperture ring.

They also do an M42 adapter to A7/r !!!!

This means all that old Soviet and East German DDR glass can be used on the A7r too. This is a good thing. A very, very good thing!

MJP Diamond Member

MJP

Posted
Posted (edited)

Ho Ho Ho!!!

I don't mean to go on. But. Novoflex also do a Minolta MD adapter for the A7r. This means you can use the Minolta Rokkor MC 58mm f/1.2.

I wonder if there's a Konica adapter so the Konica Hexanon AR 57mm f/1.2 can be used? Or does this lens share the Minolta mount? Can't remember.

These are two legendary f/1.2 lenses.

This full frame, short flange distance and adapter set up is revolutionary in my opinion. Old glass. New 36mp FF sensor. It's all good.

Edited by MJP
MJP Diamond Member

MJP

Posted
Posted

Now I'm unsure. Need help here gang. Have a look at this and tell me what you think. K-3 and A7r with D7100 and 70D thrown in as comparators.

http://www.dpreview.com/reviews/image-comparison?attr18=daylight&attr13_0=pentax_k3&attr13_1=nikon_d7100&attr13_2=canon_eos70d&attr13_3=sony_a7r&attr15_0=raw&attr15_1=raw&attr15_2=raw&attr15_3=raw&attr16_0=100&attr16_1=100&attr16_2=100&attr16_3=100&normalization=full&widget=1&x=-0.2859552495697074&y=-0.07390813894091618

Yes, I'm bored out of my mind and I want a new toy for Christmas, okay? Just can't decide which one. K-3 or A7r or A7. Dunno? Really dunno.

Tywais Star Member

Tywais

Posted
  • Author
Posted

Now I'm unsure. Need help here gang. Have a look at this and tell me what you think. K-3 and A7r with D7100 and 70D thrown in as comparators.

I realize our situations are different as you have glass you can use already either directly or via adapter. But because I already have a fair amount of glass for micro 4/3's it is more realistic for me to go that route for an upgrade My post here on my decision on OM-D EM-1 upgrade path.

But of the 3, if I were doing it, the a7r without hesitation.

MJP Diamond Member

MJP

Posted
Posted

Now I'm unsure. Need help here gang. Have a look at this and tell me what you think. K-3 and A7r with D7100 and 70D thrown in as comparators.

I realize our situations are different as you have glass you can use already either directly or via adapter. But because I already have a fair amount of glass for micro 4/3's it is more realistic for me to go that route for an upgrade My post here on my decision on OM-D EM-1 upgrade path.

But of the 3, if I were doing it, the a7r without hesitation.

Thank you Tywais.

MJP Diamond Member

MJP

Posted
Posted

Hmmmm . . . .ummmmmm . . . .. hhhrrruummmmm . .. .

I'm waiting for the bloke who bought this to post some test shots. I shall be guided by the effect of adapter use, particularly resolution, smearing and vignetting.

MJP Diamond Member

MJP

Posted
Posted

Sony A7? Or Pentax K3? Or both? Go on, you deserve it.

I'm thinking this too. It's not like it's a lot of money or anything.

xsick.gif.pagespeed.ic.MPO6H9qvs0.webp

MJP Diamond Member

MJP

Posted
Posted (edited)

Are we meant to be impressed by these?

No, I'm looking for a what think.

Those are the first ever shots he did, there in the store.

Here's what he said about using the thing with the 77 Limited, manual focus.

I'm using a Kipon adapter. Seems to be fine, but goes over infinity focus. However, no issues as I'm used to that already from using it with my NEX. Manual focus works well on magnified view with focus peaking on low. There is a button next to the shutter release, which turns on the magnified view. It's a cinch to get sharp shots as I kept the shutter at 1/125th second, which is no issue with the lack of noise from a full frame sensor. Hence no need for stabilisation. No viginetting or smearing on the FA77. I also got the EA4 and am looking forward to trying it with my A-mount Sigma 150mm lens, which has lens stabilisation.
Edited by MJP
Dogmatix Ruby Member

Dogmatix

Posted
Posted

I have the Contax G 28mm f2.8 which I have used on a Sony NEX 5N with a Kipon adapter. It is a very sharp lens but it scratches the internal baffle of the NEX 5N as it as fraction of a mm too long. No harm to the optics, only the internal aesthetics of the camera. I am not sure what this new Eagle adapter would be like using the Contax G's autofocus system. Autofocus was a bit of a problem with the Contax G1 version of the camera. It will be interesting to see how well the lens will work in conjunction with the A7's modern day electronics. As long as it fits without banging on the baffle, it should be OK to use manually with the Kipon adapter and not bother with the electronics. Focus is not such an issue at 28mm f2.8 and the autofocus probably won't do any better than manual. In which case this adapter might be a gimmick.

The 21mm Contax G is too long at the back for the NEX cameras and almost certainly for the A7 body. The other two should be fine as there at shorter arsed than the 28mm.

Another thing to watch out for is whether the the 28mm lens produces magenta fringing on the FF Sony's. Early reports suggest that most wide angle rangefinder lenses will do that on the A7R but not the A7. This was the same issue with the NEX 5N which didn't have the magenta fringing and the NEX 7 which did. It is a probably due to the difficulty of making offset microlenses work with smaller pixels which disadvantages the higher pixel models. Leica has in camera software that fixes the problem for its own wide angle lenses.

One thing that is a big disappointment is the two part noisy shutter which sadly makes the A7 and A7R unsuitable for unobtrusive street photography. The RX1 is much quieter and a lovely little bundle. but who can justify the price for one fixed lens.

Tywais Star Member

Tywais

Posted
  • Author
Posted

Early reports suggest that most wide angle rangefinder lenses will do that on the A7R but not the A7.

Possibly because the A7r has no AA filter?

Arkady Ruby Member

Arkady

Posted
Posted

Albeit at a phenomenal cost this might well be the answer to using our Contax G lenses for digital. Options also available for converted lenses.

http://www.japanexposures.com/lens/

At this price, you are better off buying Zeiss M or Leica glass.

The Zeiss Contax SLR range are pretty good too and I don't think any less sharp than Zeiss Contax G. I have the Contax 50mm f2 and it is just as good as a Leica 50mm f2 Summicron, although a little bulkier but light and a fraction the cost. The Contax 60mm f2.8 macro and 100mm f2.8 macro are great macro lenses too and there is nothing much finer in macro than the 100mm. If you are a millionaire, you should have a Contax 85mm f1.2 special edition but I love my Cannon FD 85mm f1.2L which is more affordable to mere mortals.

For autofocus I think it makes more sense to get the Sony Zeiss prime lens offerings when they are all available than go with autofocus adapters for legacy lenses.

Dogmatix Ruby Member

Dogmatix

Posted
Posted

Took another look in a Sony showroom. The salesman was heavily pushing the A7, saying that the A7R was only good for landscape and would require a lot of post retouching work on portraits (hair would look really bad) due to more pixels and no AA filter and that moire would be a big problem. He was effectively saying that its resolution would be excessive but this might depend on what lens you use. The two non-Zeiss lenses they have in stock probably have less resolution than the sensor which would not make this a problem. You could also use a vintage portait lens known for its soft character, if this really is an issue. The moire issue seems to be complete BS as it is unlikely to affect most photographers and a test by Camerlabs suggest that the AA filter in the A7 is almost useless at reducing moire and the A7R performed only marginally worse than the A7 in that respect. The Canon 5D III performed much better at eliminating moire but the A7R outguns it in resolution, high ISO and some other areas. It's funny that the modern trend is to make consumers pay a premium to remove AA filters, particularly if they are useless in the first place.

I think the salesman's view was heavily influenced by the fact that they have stock of the A7 already and can't say when they will have stock of the A7R. They will no doubt push the more expensive model when it arrives.

Still no detailed tests of the magenta corner smearing with wide angle RF lenses, although some have said that it exists in the A7R but not in the A7. Leicas which have no AA filter have this problem with the Voigtlander 12mm and 15mm lens which can be resolved in post or or by shooting in B&W. Leica 21mm lenses and the WATE 16/18/21mm don't have the problem but they are corrected in camera by onboard software. The NEX7 has the problem but the NEX5N doesn't and both have AA filters. Both the A7 and the A7R have offset microlenses and the A7R's are gapless which should deal with the colour shift more effectively. The problem could be smaller pixels but more tests are needed. It is possible that use of a helicoid macro M to E adapter will resolve the issue by pushing the rear element of a wide angle RF lens 4-5mm out from the sensor. It would also reduce the minimum focus distance from 70cm to about 40cm in the case of a Leica 21mm lens, which is of course its main purpose. The Hawk factor version of these are available on Ebay for US$180 and the much better quality but heavier Voigtlander version is at AV Camera in Bkk for aoubt B10,000.

I wonder whether Sony will come out with A7N and A7RN models with a silent shutter option in a year's time!

fimgirl Advanced Member

fimgirl

Posted
Posted

Good analysis and not much more to add. As things stand I'm still on the fence although I have to say that the A7 appeals more simply because of AF speed, flash synch speed and smaller sensor. I can envisage enormous problems with the "wrong" lens on a 36Mb sensor.

I'll wait and see what the guys produce in real field tests before taking the plunge but a FF mirror less and able to use my M mount lenses at their native focal length would be a real treat............. Maybe!

  • Like 1
MJP Diamond Member

MJP

Posted
Posted

Good analysis and not much more to add. As things stand I'm still on the fence although I have to say that the A7 appeals more simply because of AF speed, flash synch speed and smaller sensor. I can envisage enormous problems with the "wrong" lens on a 36Mb sensor.

I'll wait and see what the guys produce in real field tests before taking the plunge but a FF mirror less and able to use my M mount lenses at their native focal length would be a real treat............. Maybe!

Thanks for your comment. AF might be a bit of issue, given the A7R's lack of phase detect, particularly for video, but the reports so far suggest the A7R's AF is not too bad at all. Neither camera is probably suitable for sport. For me AF is probably not an issue as I also want to mount mainly M lenses, although I might come round to Zeiss Sony prime lens later on. I bought some Sony E mount lenses for my NEX-5N and a Sigma 30mm f2 E mount which was not bad but I ended up hardly using them once I got back into the swing of using MF again. MF is better in low light and the Sigma is not match for my vintage Leica 35mm f1.4.

One thing I think will take a bit of getting used to in upgrading from APS-C will be the loss of reach at the longer end. Using a 135mm lens in place of a 90 or 85mm will be a pain and there are no fast M mount 135s. Perhaps the NEX-5N will stay in my bag for that.

You could always go the M42 mount route (Novoflex do an M42 adapter for the A7) and use a CZJ DDR 135 f/3.5 or Tair 11A, something like that. Both are pretty cheap still.

  • 5 years later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.






ASEANNOW

ASEANNOW (formerly Thai Visa) Thailand's oldest and most popular forum for expats and foreigners.

Sign up today and have your say

MORE INFO

POPULAR AREAS

CONTACT US

219/59 Asoke Towers, 15th Floor, Soi Sukhumvit 21, Watthana, Bangkok 10110
(+66) 99 196 1100
[email protected]

×
×
  • Create New...