Re: Lens hood for pentax m 28mm

[Joseph McAllister]

On May 17, 2012, at 15:46 , steve harley wrote:

> on 2012-05-17 15:06 P. J. Alling wrote
>> Which would be perfect for film,
> 
> i thought the OP wanted one for film
> 
>> but for digital the lens hood from a 43mm
>> limited would be preferable, though even that might be too short to be really
>> effective.
> 
> wouldn't it also depend somewhat on how the lens body winds up positioning 
> the hood with respect to the lens itself?
> 
> for myself, the hood i mentioned is just what i happen to have with the FA 28 
> came my way recently — not an ideal hood, but it still protects the lens from 
> knocks, which is important for me, and shades the lens much better than no 
> hood at all

It has come to  my attention that the DA tulip style lens hoods were carefully 
designed to be another source of revenue for Pentax, or whomsoever happens to 
own the name at the moment.

I have repaired my 60-250 / 50-135 lens shade multiple times after it was 
broken by hitting it against some immovable object. Even when carrying the 
camera upside down so it lays next to the hip instead of sticking out 6+ 
inches, the shade gets hit when you bend over without restraining it, or it 
hits your hip-bone too hard. This can even happen when the shade is reversed. 
And when breaking, it can (and has) break off the ridge/channel (also plastic) 
of the lens barrel. IF you find the parts when this happens, you can glue them 
back on. Until the next time. I finally lost a vital piece of my hood last 
week. There is no repairing it.

The parts of the shade that take the shock of hitting a lip of the tulip 
against something are entirely too delicate , they are in fact the thinnest 
weakest parts of the units. And it is those parts that are a real problem to 
repair with superglue and some sort of reinforcing mesh or sliver of wood.

This hood, a complex piece of plastic, sells for $64.00 from Pentax. Lest you 
think the cost is due to the hood's shape or size (67 mm), that is the same 
price as the 49mm hood for the DA 50-200mm, which is round, no tulips. But the 
D-FA 100mm Macro, which uses a 52mm round hood, only costs $40.00. The 
difference? We are being charged a $14.00 premium for the Filter Access Door on 
the former, which in itself makes these hoods much more delicate. Before my 
hood broke for the first time, that door was knocked out several times, with no 
harm. Making a hood to incorporate this access panel turns one of the thinnest 
sections of the hood's structure into relying on that access door to absorb the 
shock. It doesn't though.

One would hope that Pentax sees fit to reduce the price on these items so we 
can afford to display the Pentax Logo on our lenses as well as the camera.. 
Pentax will lose out on these steep cost of using their premium lenses, as many 
of us will turn to aftermarket solutions for our hoods - or use liberal amounts 
of duct tape on our pretty Pentax glass, using the phrase "Yes, it's a great 
lens, but Pentax makes the flimsiest lens hoods, and want's way too much money 
for them." when asked by other photographers "Why the duct tape?".

Are you listening, Pentax?

Joseph McAllister
pentax...@mac.com

http://gallery.me.com/jomac








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Re: Lens hood for pentax m 28mm

[steve harley]

on 2012-05-17 15:06 P. J. Alling wrote

Which would be perfect for film,


i thought the OP wanted one for film


but for digital the lens hood from a 43mm
limited would be preferable, though even that might be too short to be really
effective.


wouldn't it also depend somewhat on how the lens body winds up positioning the 
hood with respect to the lens itself?


for myself, the hood i mentioned is just what i happen to have with the FA 28 
came my way recently — not an ideal hood, but it still protects the lens from 
knocks, which is important for me, and shades the lens much better than no hood 
at all



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Re: Lens hood for pentax m 28mm

[P. J. Alling]

Which would  be perfect for film, but for digital the lens hood from a 
43mm limited would be preferable, though even that might be too short to 
be really effective.


On 5/17/2012 4:52 PM, steve harley wrote:

on 2012-05-16 10:15 Kenton Brede wrote

I've got a screw in lens hood for my M50mm and M28mm lenses that works
fine with my K-5, but when I tried it with my K1000, I get vignetting.


the sole piece of Pentax equipment inherited from my stepfather was 
one of these:


 



(Asahi hood for Takumar 1:3.5 28mm)

i see several of these on eBay, the link above is to the first i saw 
at a reasonable price


mine is in near mint shape; it's pretty, and it works perfectly on my 
FA 28, which may or may not match your M 28 — it's an outside 
compression fit on the thin last portion of the barrel, whose relevant 
outer diameter appears to be approx 50.5 or 51mm


it does make removing the cap tricky, so i'm looking for a good pinch 
cap to use with it





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Don't lose heart!  They might want to cut it out, and they'll want to avoid a 
lengthily search.


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Re: Lens hood for pentax m 28mm

[steve harley]

on 2012-05-16 10:15 Kenton Brede wrote

I've got a screw in lens hood for my M50mm and M28mm lenses that works
fine with my K-5, but when I tried it with my K1000, I get vignetting.


the sole piece of Pentax equipment inherited from my stepfather was one of 
these:



(Asahi hood for Takumar 1:3.5 28mm)

i see several of these on eBay, the link above is to the first i saw at a 
reasonable price


mine is in near mint shape; it's pretty, and it works perfectly on my FA 28, 
which may or may not match your M 28 — it's an outside compression fit on the 
thin last portion of the barrel, whose relevant outer diameter appears to be 
approx 50.5 or 51mm


it does make removing the cap tricky, so i'm looking for a good pinch cap to 
use with it


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Re: Lens hood for pentax m 28mm

[Bob Sullivan]

Long ago I bought a Vivitar metal lens hood for my M28/2.8 lens.
49mm screw in threads and probably 6-7 inch wide front...doesn't
vignette on full frame film cameras.
Otherwise you'll be in for a long search.
Regards,  Bob S.

On Wed, May 16, 2012 at 4:19 PM, John Sessoms  wrote:
> From: Kenton Brede
>
>
>> I've got a screw in lens hood for my M50mm and M28mm lenses that works
>> fine with my K-5, but when I tried it with my K1000, I get vignetting.
>>  I found a hood for the 50mm on B&H but not for the 28mm.  From what I
>> gather the official hood is a PH-S49 for the 28mm.  Can't find that
>> anywhere.  I found this snippet on Pentax Users, "For your M-28mm and
>> M-50mm, a 49-37mm and a 37-30.5mm step-down adapter ring will do
>> nicely."  I've never worked with step-down rings but it doesn't make
>> sense to me to go from 49mm to 30.5mm.  It seems like the lens would
>> vignette with that configuration.
>>
>> Anyone have a bright idea or know of a source for manual lens hoods?
>> I've tried ebay and KEH and google of course.
>> Thanks,
>
>
> That doesn't sound right. If it's already vignetting, a smaller diameter
> hood is just going to make the vignetting worse.
>
> I had a problem with my A 24/2.8 vignetting with polarizing filters on K1000
> & LX, even the ultra-thin ones and I fixed it by getting a 52mm to 58mm
> step-UP ring & using a larger diameter filter.
>
> If your getting vignetting, you need a step-UP ring, like a 49mm to 52mm,
> and then you could mount a screw in lens hood like this one (or something
> similar you can purchase locally):
>
> http://www.bhphotovideo.com/c/product/649756-REG/Bower_HT52_HT52_52mm_Tulip_Lens.html#Overview
>
> Even though it's a "tulip" hood, the hood part rotates around the screw-in
> base so it will work on lenses where the front element rotates when you
> focus.
>
>
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RE: Lens hood for pentax m 28mm

[John Sessoms]

From: Kenton Brede


I've got a screw in lens hood for my M50mm and M28mm lenses that works
fine with my K-5, but when I tried it with my K1000, I get vignetting.
 I found a hood for the 50mm on B&H but not for the 28mm.  From what I
gather the official hood is a PH-S49 for the 28mm.  Can't find that
anywhere.  I found this snippet on Pentax Users, "For your M-28mm and
M-50mm, a 49-37mm and a 37-30.5mm step-down adapter ring will do
nicely."  I've never worked with step-down rings but it doesn't make
sense to me to go from 49mm to 30.5mm.  It seems like the lens would
vignette with that configuration.

Anyone have a bright idea or know of a source for manual lens hoods?
I've tried ebay and KEH and google of course.
Thanks,


That doesn't sound right. If it's already vignetting, a smaller diameter 
hood is just going to make the vignetting worse.


I had a problem with my A 24/2.8 vignetting with polarizing filters on 
K1000 & LX, even the ultra-thin ones and I fixed it by getting a 52mm to 
58mm step-UP ring & using a larger diameter filter.


If your getting vignetting, you need a step-UP ring, like a 49mm to 
52mm, and then you could mount a screw in lens hood like this one (or 
something similar you can purchase locally):


http://www.bhphotovideo.com/c/product/649756-REG/Bower_HT52_HT52_52mm_Tulip_Lens.html#Overview

Even though it's a "tulip" hood, the hood part rotates around the 
screw-in base so it will work on lenses where the front element rotates 
when you focus.


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