AhamB wrote:
Question about the Mamiya 200/2.8 APO: What is the size of the filter thread on the extendable hood? Is it 82mm?
The lens cap is 77mm but it doesn't make sense to me to put a hood on the inner threads onto which the cap goes, if I can make use of the extension of the attached hood.
It looks like the last one will be more effective. I have quite severe problems with flare sometimes with this lens...
The thread diameter where the outer hood attaches to the inner hood is about 85mm. I agree that it seems wierd to attach a hood to the lens 77mm filter ring, as that's ignoring the smaller inner hood, but it's probably the best way to go. I have the extension hood and haven't noticed any particular problems with flare, but that may be due to the subjects I usually shoot with it.
AhamB wrote:
Question about the Mamiya 200/2.8 APO: What is the size of the filter thread on the extendable hood? Is it 82mm?
The lens cap is 77mm but it doesn't make sense to me to put a hood on the inner threads onto which the cap goes, if I can make use of the extension of the attached hood.
It looks like the last one will be more effective. I have quite severe problems with flare sometimes with this lens...
the Mamiya hood is not threaded for filters, but has a nice rubber bumper. It does unscrew with a quarter turn to then push back so you can reach the 77mm threads on the lens itself.
Using a polarizer is sort of a pain with this lense, but can be done, and it does work. Even with the hood section exteded, you can stick your hand inside and rotate the polarizer with a little practice. You need to collapse the hood to install a filter though.
The hood is flocked, so don't reach in there with dirty nasty hands. you can remove the hood section, but it's quite prone to cross threaded in you re-attach it.
When I purchased my 200 APO years ago, it came without the extension hood. Since I always seem to miss the used copies that come up, I picked up the 127-250mm rubber hood for the Mamiya RB67 system (the same one many 70-200/2.8 users use for compactness) until a used copy and I actually cross paths.
Looks odd, but it fits nicely on the lens, extends a bit further than the stock inner hood, has it's own threaded ring for filters/caps, collapses nicely in a bag and makes for easy access to the cap and filters.
AhamB wrote:
Question about the Mamiya 200/2.8 APO: What is the size of the filter thread on the extendable hood? Is it 82mm?
The lens cap is 77mm but it doesn't make sense to me to put a hood on the inner threads onto which the cap goes, if I can make use of the extension of the attached hood.
It looks like the last one will be more effective. I have quite severe problems with flare sometimes with this lens...
I have an 86mm screw in hood from a different lens that seems like it would fit the threads if it could reach them.
Thanks Jim. I bought a Contax lens from KEH, and figured I would throw in a couple Mamiya's since the shipping wouldn't cost any extra; the 210/4 & 150/4 to add some length to my alt kit. In fact, the adapter I bought for them cost more than either of the lenses...
You will enjoy them both. I am still in awe of the IQ from this pair. I have the 200 APO now but it is massive in comparison to the 210/4. Due its relatively compact dimensions and great IQ and because the 210 was so darned cheap, it continues to have a place in my camera bag.
I look forward to seeing some more captures from your Mamiyas.
I picked up a few inexpensive Mamiya M645 lenses to use on 5DmkII with a regular adapter. Have a few observations. (Note they are only valid for 35mm sensor size on a non-tilt/shift adapter).
I found my M645 lenses to be a mixed bag, although I don't have any of the more expensive ones (150/2.8 or 200/2.8 or 120/4 would be nice but out of my budget).
55/2.8 N: it's a retrofocus design, and it's quite unsharp wide open, with halos and some purple fringing. From f/4 it becomes very sharp across the frame, no CA. Conclusion: must be good on medium format; no sense to use it on 35mm cameras - any 50-55mm lens is going to be sharp when stopped down to f/4. Probably very nice on a t/s adapter. Medium to low contrast. Paid sub-$100 for mine.
80/2.8 N: great lens, a classic, straightforward Planar design. Medium contrast, sharp straight from wide open, no PF, no CA, no halos around bright objects. It's very much worth its modest ($49) price as a portrait lens!
150/3.5 N: quite sharp from wide open, does not get much sharper stopped down.
Very even performance across the frame. No vignetting. Good control of PF and CA. Decent overall performer, but not stellar. May be worth it for the price though ($65).
210/4 C: rather sharp, some PF, very little CA. Better than Leica-R Telyt 250/4, and focuses closer, too, but Nikkor 200/4 is sharper and more contrasty. Average performer on 35mm, must be a great portrait lens on medium format. I paid sub-$100 for this one.
Conclusion: 80mm great, 150mm good if the price is right, 210mm decent but not stellar, 55mm not worth it on 35mm cameras unless used on a tilt/shift adapter.
I'll be joining the club very soon ....
80/1.9 is on the way ....
The lens says 'Mamiya Sekor C" ....
Are there different versions to this lens?
And, what is the little sliding tab on the lens for?
It shows either "A" or "M", depending on the position of the slider....
I thought this lens was a manual focus lens....
Paul Yi wrote:
I'll be joining the club very soon ....
80/1.9 is on the way ....
The lens says 'Mamiya Sekor C" ....
Are there different versions to this lens?
And, what is the little sliding tab on the lens for?
It shows either "A" or "M", depending on the position of the slider....
I thought this lens was a manual focus lens....
A = "in camera" aperture stop down active. Only works on MF bodies capable of coupling and operating the pin/lever on the back of the lens.
M = aperture control from aperture control ring only. This is the position the switch must be in when using the lens on an adapter attached to a DSLR otherwise in the "A" position the aperture will remain wide open regardless of the aperture ring position.
