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Re: [OM] A7 adapter arrived. First impressions.

Subject: Re: [OM] A7 adapter arrived. First impressions.
From: Frank <wijsmuller@xxxxxxxxx>
Date: Wed, 24 Sep 2014 16:29:00 +0200
Thanks for the impression, looking forward to the pictures...
Best, Frank

2014-09-24 14:23 GMT+02:00 Hughes <timhughes@xxxxxxxx>:

> My Photasy brand adapter, arrived very fast from rainbow imaging. ~$15
>
> I chose it because it had a ribbed interior to cut reflections, as well as
> a tab rather than a screw aperture detent.
>
> The fit is snug for both the E mount and the OM mount,will have to see how
> it wears.
>
> Only downside so far, is the red line on the lenses does not line up
> exactly at the top of the camera, it is off vertical axis a bit.
> Seems to focus to infinity ok.
>
> Now in use, I really like the A7 with OM lenses,it is almost like using an
> OM4 again. They have really done a lot, to greatly improve the experience
> of using legacy glass on this camera. Interesting, how some of the changes,
> over and above full frame compact body, have so greatly improved the
> experience over my Canyon adapted body.
>
> I did a trip to Peru earlier in the year and used my old canyon APS-C
> camera, with some Canyon mount lenses and some adapted OM lenses.
>
> At the time, I thought just how much I missed the fun of a great travel
> camera like an OM2.  Having to put up with a dim finder,lousy focus screens
> etc.stop down focus issues etc, takes away half the fun. Most of the issues
> are dealt with in some fashion in the A7. Not that the A7 does not have a
> few issues too and it chows batteries.
>
>
> Lens contrast with the A7 seems really quite good, compared to the same
> glass on the Canyon. Not sure whether the sensor is less reflective, or
> whether it is a dirty sensor on my old camera?  At a quick look, lateral
> Color fringing looks acceptable, even on wides.
>
>
> Still learning to use all the cameras myriad options.
>
> It accepts regular hot shoes ,and I took a few shots with a T32. Not sure
> what specified sync speed is, but it seemed to work to ~1/300 th. The high
> sensor sensitivity is a huge improvement over my very old Canyon.
>
>
> So far I have tried the following mostly OM lenses with very pleasing
> results:
>
> 135/2.8,  21mm/3.5, 16mm/3.5 fish eye, 14mm/3.5 sigma (in OM mount,is low
> contrast lens even on OM),135mm F1.8 Sigmatel (monster cult lens in OM
> mount,difficult to focus even on Om, but works well on A7 with focus aid)
> and favorite Novoflex follow focus 240mm (also with OM 1.4X adapter),
>
> Still to try : My stereo microscope (not Oly!) with its OM
> adapter,50mm/1.8, 28mm (seldom used), 35mm/3.5 shift (seldom used),
> Novoflex 400mm, 50mm/3.5 macro and my favourite and most used Zuiko of all
> time 24mm/F2. Novoflex bellows with various flat field lenses (Canon 20mm
> micro in RMS-OM,Minolta ,Zeiss)
>
>
> Lots to play with still and maybe then do some actual photography!
>
>
> Tim Hughes
>
>
>
>
>
>
>
> ________________________________
>  From: Hughes <timhughes@xxxxxxxx>
> To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
> Sent: Thursday, September 18, 2014 2:18 AM
> Subject: Re: [OM] Best OM to A7 adapter?
>
>
>
> <no chipped adapters for mirrorless cameras.>
>
> There are a few very smart adapters for FE mount though:
> Sony themselves makes a very smart adapter for the original A mount (
> Minolta AF mount lenses, and later Sony/minolta fully electronic
> elaboration). This includes the older mechanical diaphragm stop down
> mechanism and the auto focus mechanical screw drive of the original early A
> mount, as well as all electronic newer versions.
>  This unit incorporates a partial silvered mirror with phase detector
> (losing 1/3 stop of light)  but this allows the same fast focus speed with
> the old lenses, of a modern camera and allows focusing even while videoing
> or during shutter release blackout. This is probably very good for Sony's
> high resolution video camera that uses EF mount lenses.
> For many of the old lenses, this device includes Exif info and other
> features,depending on lens vintage.
> There are actually two current Sony smart adapters with less and more
> backward compatibility. The most full featured one is pricey ~$350, the
> other one does not include phase detect focus but also does not lose
> 1/3stop.
>
>
> Metabones makes a somewhat similar Canon EF to Sony FE mount adapter, for
> using Canon AF lenses on these bodies, although auto focus speed is not as
> fast.  That also includes full diaphragm automation and exif data. Cost is
> ~ similar or a little more.
>
>
> There is at least one other vendor making a Canon adapter similar to
> metabones, but seems of lessor quality/ cheaper. But likely will improve
> over time.
>
>
> So an A7 can be used with most Minolta/Sony (alpha mount)  A mount lenses
> going back to 1985. Third party lenses in those mounts have worse
> compatibility and may not all work.    In addition most electronic Canon EF
> lenses (late 80's to today) will work with AF, diaphragm control,program
> mode etc. at a cost.
>
>
> The Minolta Maxxum lenses from the mid 80's to early 2000's included a few
> very good lenses and prices are often very reasonable used,unlike new Sony
> and Sony Zeiss lenses which tend to be expensive.
>
>
> There are a few compact  Aps C Sony lenses in E mount, like the 16-50mm
> pancake zoom,with anti-shake, which turns a full frame A7 into a pretty
> compact travel camera, when you want to leave your larger lenses at the
> hotel.  The body can autodetect APS format lenses and crop accordingly, if
> you choose that setting.
>
> So that lens is 24mm-75mm equivalent and produces 12M pixel pictures, a
> nice bonus option for walkabout.
>
>
> The focus aid magnification in an A7 ,can help make the fact that no
> simple  chipped adapters are available, a bit less important.
>
> Tim Hughes
>
>
> ________________________________
>  From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
> To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
> Sent: Wednesday, September 17, 2014 9:27 AM
> Subject: Re: [OM] Best OM to A7 adapter?
>
>
> AFAIK, there are no chipped adapters for mirrorless cameras.
>
> Chuck Norcutt
>
>
>
> On 9/17/2014 11:41 AM, Ken Norton wrote:
> > Another factor, is having to turn the camera off when changing lenses.
> > If you use just the one adaptor, you can swap lenses without the
> > camera needing to be turned off. This, however, is worthless if you
> > use chipped adaptors that identify the focal length used.
> >
> >
>  So, whatever...
> --
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>
>
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