Maybe they forgot what game they were playing

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I'm still checking on that. The next check is SDM I know
the Jessop one works well with the Sigma 150-500mm but
have to check it again with the Pentax DA* 300mm.

The usual one for the DA* 300mm is the Tamron 1.4 which I
have, but it's not as sharp with the 55-300mm

A lot of these TC's look the same, but don't work the same

If it turns out that I have two both the same I'll be selling
one for around what I paid for them (c. £150)

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TEST : Pentax-DA smc 55-300mm f/4-5.8 ED + Jessop 1.7x TC

Camera K-5 at f/8 & 1/160th : Brolly Flash : 80ISO : Tripod

100% Crops from Camera jpgs both given the same slight PP tweak

1st shot with Jessop 1.7x TC from 5.4M at approx. 230mm on lens

2nd shot NO TC from 3.43M at approx. 230mm on lens (adjusted slightly to
give same image size).

Result/Conclusion : LOSS DUE TO TC IS NEGLIGIBLE.

2nd shot is slightly brighter which is mainly due to
the flash being left on the same power instead of
being reduced by 1 stop.

I have used several shots for the comparison which aren't posted here
and the two posted are 800 square crops from full size images.

Both Manual Focus by Live View
Extra shots taken +/- 40mm either side
to check focus.

AF also works perfectly with this LENS AND TC
Shots at 300mm should be similar.

Complete Exif Data inc. name of lens seems to
be on the original JPGS some gets lost on the
crops.

Shot 1 with Jessop 1.7x TC




Shot 2 No TC



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There's loads of pictures of them on ebay and Google
search for "ten pound banknote"

Pound shops have money boxes with a complete image of a
£20 note on all 4 sides and I've seen then on serviettes

I personally just use Irish stamps now, because they have
a lot of fine detail and collectors packs are cheap on ebay.
Plus neither PS or Corel Photo Paint allow the importing of
images of Pound Notes.

-

I remember quite a few people getting legs and hands burnt
due to putting the old 22V flash-bulb batteries in their
pockets.

-

The video of the car on fire is an eye opener.

Just be careful rubbing 2 sticks together

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Is it merely a coincidence that there are
24 bottles of beer in a crate and 24 hours
in the day?

The Pentax 55-300mm is a great lens and works well with some
TC's.

This 100% crop (which has had to be severely cropped to 800sq
for this forum) was taken with a Jessops 1.7x TC (available
under several names) yesterday. I didn't
realize I'd only used f/6.3 I originally set it to f/7.1
which would be a bit sharper.

The screwdrive AF works with this TC

It doesn't work as well with the popular Tamron 1.4x

260mm x 1.7x = 440mm
Distance 5.4M .... ISO80 .... Flash .... K-5

The "Best cheap and cheerful 300mm range telephoto lens?" Thread
Seems to have been deleted????




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I hate it when birds get in the way on my
tree bark photos

Not much use in a country where it's always raining!

I suppose it's nice to know where the sun is even though
we can't actually see it!