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02-22-2012, 11:37 AM   #1
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FA 400mm 5.6 over FA* 300mm 4.0

Here are the lenses I have, most of these have been used on my 645N and K5 but will primarily be used on a 645D in the future.

A 35mm, FA 45-85mm, A 120mm, FA 120mm, FA 150mm, FA 300mm 5.6, FA* 300mm 4.0, and A* 600mm 5.6.

My question is should I dump the FA* 300mm for the FA 400mm 5.6? I have the 300mm 5.6 which is worlds lighter than the 300mm 4.0. I haven't had a chance to test it on the 645D yet though. It seems to me I would be better just flat dumping the FA* or selling it and buying the 400mm. Thoughts?


Last edited by atlnq9; 02-22-2012 at 09:14 PM.
02-22-2012, 12:22 PM   #2
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It all depends on your needs, and what you want. Do you need the 4.0 aperture or not, do you need the 400mm or not. I personally would do it (But I do a lot of surf photography, and all the long lenses come in handy then)
02-22-2012, 12:39 PM   #3
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I wouldn't worry too much about the K-5 at this point, but if you need the extra reach, then I would go for it. 300mm isn't as long as you'd expect on medium format, but remember that because of the crop factor, a 300mm on a 645D will be more like a 400mm on a 645N.

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02-22-2012, 01:00 PM   #4
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QuoteOriginally posted by atlnq9 Quote
My question is should I dump the FA* 300mm for the FA 400mm 5.6?
I don't know the lenses -- but the 645D has a hell lot of resolution and if you don't need it, you don't need the 645D.

So, I would hesitate twice before dropping a Star lens in favor of a non-Star one. It may lack the necessary resolving power for the 645D and you can crop into 645D images a lot, i.e., a 50% crop (300mm -> 600mm) is still a 10MP image ...

02-22-2012, 01:44 PM   #5
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QuoteOriginally posted by atlnq9 Quote
Here are the lenses I have, most of these have been used on my 645N or K5 but will primarily be used on a 645D in the future.

A 35mm, FA 45-85mm, A 120mm, FA 120mm, FA 150mm, FA 300mm 5.6, FA* 300mm 4.0, and A* 600mm 5.6.

My question is should I dump the FA* 300mm for the FA 400mm 5.6? I have the 300mm 5.6 which is worlds lighter than the 300mm 4.0. I haven't had a chance to test it on the 645D yet though. It seems to me I would be better just flat dumping the FA* or selling it and buying the 400mm. Thoughts?
Hello, I think i would primarily choose according to my ruck's bag capacity !
I don't know about the 300/5.6, but i have the FA*300 and would not get rid of it for any reason so far. Better get the X1.4 converter than buy the 400mm in my opinion : + you already have an excellent 600mm.
02-22-2012, 10:33 PM   #6
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Hi,

I have used and tested out both the FA 300 f4 and FA 400 5.6 on the 645D and both are superb lenses. There are differences of course in acuity and resolution. When both are used wide open, the FA 300 f4 has more bite, is sharper and renders detail better. When each is stopped down 2 f-stops, the differences are smaller but micro contrast in the FA 300 f4 is still superior (both wide open and stopped down) and in many cases this can be readily seen. I do like the additional reach of the FA 400 though and if used stopped down to f9 and smaller, it can easily be used for critial applications and large format printing. What I find will make the biggest difference in performance than anything in how these lenses perform, is carefully testing each individual lens sample and finding the best possible AF fine tune setting for them on the 645D. Even being slightly off can make a considerable difference in performance, especially when the respective lenses are used wide open or one stop down from max. aperture.

Interesting you have the A* 600 f5.6 645 lens. I am in the market to purchase one now or in the near future.

Dave (D&A)
02-22-2012, 10:43 PM   #7
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As a star lens freak, I can promise you that the color rendition from the * makes it worth any weight or cost disadvantages. It may not be as dramatic as comparing color TV to black and white, but it is very very noticeable once you get up to 300mm or more. As much as I'd like you to buy my M*400/4 in the marketplace, when you found the bigger star lens...600/5.6...you rendered the point moot.
02-23-2012, 08:18 AM   #8
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You have both lenses, so you can see which you prefer. I went with the f/5.6 for practical reasons--the weight and minimum focusing distance. I don't really use a 300mm that much and I am going to use it less if it is too heavy to carry. The best lens is the one you use.

02-23-2012, 09:55 AM   #9
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QuoteOriginally posted by Ron Boggs Quote
As a star lens freak, I can promise you that the color rendition from the * makes it worth any weight or cost disadvantages. It may not be as dramatic as comparing color TV to black and white, but it is very very noticeable once you get up to 300mm or more. As much as I'd like you to buy my M*400/4 in the marketplace, when you found the bigger star lens...600/5.6...you rendered the point moot.
QuoteOriginally posted by DandA Quote
When both are used wide open, the FA 300 f4 has more bite, is sharper and renders detail better.
Alright, I am convinced. Don't get rid of the star lens. Ron, I wouldn't give up on me yet. If my tax refund is big enough... If only I could flat sell the FA*300mm to buy the 67 M* like I can the 645 400. That M* is still in the corner of my eye, I actually have your add bookmarked still. Because the 67 M* and 1.4x is considerably lighter than the A* 600, and if I ever decide to switch systems it is an easy mount onto everything but the Hassy (I think).

QuoteOriginally posted by Yamanobori Quote
You have both lenses, so you can see which you prefer. I went with the f/5.6 for practical reasons--the weight and minimum focusing distance. I don't really use a 300mm that much and I am going to use it less if it is too heavy to carry. The best lens is the one you use.
That is the joy of the 5.6 version, and my driver to keep it. Half the reason I considered the FA 400 is because it is lighter than the 300mm 4.0 and it also fills a gap between the 300 and 600. That and the 5.6 version doesn't sell. They are like a basket of peas, the 4.0 you have to find the magic bean out of the basket...

QuoteOriginally posted by Zygonyx Quote
Hello, I think i would primarily choose according to my ruck's bag capacity !
You mean truck? No bag caries everything I have.

QuoteOriginally posted by DandA Quote
Interesting you have the A* 600 f5.6 645 lens. I am in the market to purchase one now or in the near future.
Your not getting mine! Took me a fair while to find it, it actually showed up here about two months ago. I haven't even held it in my hands yet but my sister has tested it on my 645N. All the medium format (except A 35mm and FA 120mm which also gets used on 35mm) is in the USA right now waiting for the 645D to join it before a big bulk shipment to Africa. I started looking for the 600 about a year ago. Figured even if I didn't get the 645D I would still get plenty of use from it between my k5s and 645N. That is the beauty of it I think; you get a 600mm 5.6 on APSC then the APSC equivalent FOV of 300mm when it is on the 645D.
02-24-2012, 06:50 AM   #10
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QuoteOriginally posted by atlnq9 Quote
Alright, I am convinced. Don't get rid of the star lens. Ron, I wouldn't give up on me yet. If my tax refund is big enough... If only I could flat sell the FA*300mm to buy the 67 M* like I can the 645 400. That M* is still in the corner of my eye, I actually have your add bookmarked still. Because the 67 M* and 1.4x is considerably lighter than the A* 600, and if I ever decide to switch systems it is an easy mount onto everything but the Hassy (I think).


Your not getting mine! Took me a fair while to find it, it actually showed up here about two months ago. I haven't even held it in my hands yet but my sister has tested it on my 645N. All the medium format (except A 35mm and FA 120mm which also gets used on 35mm) is in the USA right now waiting for the 645D to join it before a big bulk shipment to Africa. I started looking for the 600 about a year ago. Figured even if I didn't get the 645D I would still get plenty of use from it between my k5s and 645N. That is the beauty of it I think; you get a 600mm 5.6 on APSC then the APSC equivalent FOV of 300mm when it is on the 645D.
You mean the A* 600mm f5.6 645 is right here in the States??? Just think how much lighter and less expensive it would be to ship that bulk shipment without that lug of a lens weighing down that parcel. I'll be glad to help out and purchase that lens Isn't that what helpful forum friends are for...LOL!

Sounds like though you have a great set of lenses and no doubt going to have the opportunity for some great shots. It is true that the best lenses are the ones that we don't hesitate picking up and using.

Dave (D&A)
02-28-2012, 08:50 PM   #11
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600mm

Aloha,

you have too many lenses, please sell the 600 to me! :-0

lee
03-01-2012, 09:04 AM   #12
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Or you two could just fight over this one:
Pentax 645 600mm lens

A bit high, the one out of Hong Kong 6 months ago with similar price came with the drop in polarizer which I have never seen for sale individually.
03-02-2012, 12:42 AM   #13
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600mm

Aloha,

hey I'm gearing up for Africa as well, were are you there?
$3900 bucks...I'm about 1400 short...
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